[OSM-talk] project
Hello, i created a GIS database and imported the planet data with osm2pgsql -m. So the data is stored in mercaator format. When executing this raw SQL query: select st_X(way), st_Y(way), name from planet_osm_point where capital='yes'; Then i get some data like: st_x| st_y|name ---+---+ -18915583.203791 | -2162182.86527014 | Alofi -11035458.4801666 | 2205926.10968281 | Ciudad de México -10075876.3988655 | 1648035.49949994 | Guatemala City How can i reproject the st_x and st_y to latitude / longitude? I'd like to do this in an own program. I already reprojected some Tiff data from latitude / longitude to mercaator, that worked fine. But i don't know what st_x and st_y actually are, how they are scaled, what is their offset. The documentation for st_X and st_Y didn't help me for this issue. Can anybody please explain to me what st_x and st_y are, how they are scaled, what is their offset so i can reproject these data to latitude / longitude? Thanks for any hints, Torsten. ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
[OSM-talk] setting up a new PostGIS server, now MapNik doesn't render PostGis data any more
Hi, i've set up a new PostGIS server on Linux, i had all tools installed before, i've just replaced the old database gis with a new one that i've imported using -l instead of -m, so i use lat/lon instead of mercaator. Now Mapnik still renders GeoTIFF and Shapefiles, but no data that come from PostGIS. But also, normal SQL queries still work. So i wonder what went wrong? Where could i search next? Thanks for any hints, Torsten. ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] setting up a new PostGIS server, n ow MapNik doesn't render PostGis data any more
Hello, Now Mapnik still renders GeoTIFF and Shapefiles, but no data that come from PostGIS. But also, normal SQL queries still work. What is the setting of Parameter name=estimate_extent Parameter name=extent Parameter name=estimate_extentfalse/Parameter Parameter name=extent-20037508,-19929239,20037508,19929239/Parameter so it is a problem of the settings? From googling it seems i need to set extent to -180,-90, 180,89.99 ? Do i also need to change the SRS? At the moment it is set to: +proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgri...@null +no_defs +over In some examples i only see: +proj=latlong +datum=WGS84 Best regards, Torsten. ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] setting up PostGIS, importing data
Hello, thanks for your hints, i've set up the database gis completely new, now i also imported _int.sql. Setting up table: planet_osm_nodes *** WARNING: intarray contrib module not installed Now i get this error during import: Reading in file: /local/ftp/osm/planet-100310.osm.bz2 Processing: Node(349410k) Way(0k) Relation(0k)Entity: line 529642199: parser error : xmlParseCharRef: invalid xmlChar value 24 tag k=name v=#24;#22;Meycauayan City Northbound Entry Point / ^ Entity: line 529642199: parser error : xmlParseCharRef: invalid xmlChar value 22 tag k=name v=#24;#22;Meycauayan City Northbound Entry Point / ^ /local/ftp/osm/planet-100310.osm.bz2 : failed to parse Error occurred, cleaning up I can't imagine that the file is corrupt. I do not use mercator projection in the database, based on a hint i got here. I use -l to get lat/lon. But i also can't imagine that this is the problem. Here are the commands that i used to set everything up: su postgres createuser -Upostgres -S -D -R tmohr createdb -Upostgres -EUTF8 gis psql -Upostgres gis gis=# GRANT ALL ON SCHEMA PUBLIC TO tmohr; GRANT \q createlang plpgsql gis psql -d gis -f /usr/share/postgresql/contrib/_int.sql psql -d gis -f /usr/share/postgresql/contrib/postgis.sql psql -d gis -f /usr/share/postgresql/contrib/spatial_ref_sys.sql psql -d gis GRANT ALL on geometry_columns TO tmohr; GRANT ALL on spatial_ref_sys TO tmohr; GRANT ALL ON SCHEMA PUBLIC TO tmohr; osm2pgsql -s -l /local/ftp/osm/planet-100310.osm.bz2 Did anybody have this bug before? Does anybody know what's wrong? Thanks for any hints, Torsten. ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] setting up PostGIS, importing data
Hello, I can't imagine that the file is corrupt. It is corrupt, from the developer list: The planet dump code used to turn all characters less than 32 into '?' instead of creating these character sequences. I guess he didn't read the bit of the XML spec which says that all characters 32 are invalid except for tab / newline / carriage return[1]. It makes no difference whether they exist as plain characters or character entities, they are still not allowed, e.g. thanks for that explanation. I have a committed a change which should resolve this for future dumps in r20430 but someone needs to compile and update the copy on the server. Next planet dump should be OK, or you can read from the dev list about how to update problematic characters to something acceptable. Great, then i'll wait for that next dump and install it. Hopefully it won't take long. But i guess it won't as obviously this one has some problems. Best regards, Torsten. ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
[OSM-talk] setting up PostGIS, importing data
Hello, i hope this is not off-topic here. I've set up a Postgis server here on my linux box using OpenSuSE 11.2 like this: Here are the commands (User tmohr): su postgres createuser -Upostgres -S -D -R tmohr createdb -Upostgres -EUTF8 gis psql -Upostgres gis gis=# GRANT ALL ON SCHEMA PUBLIC TO tmohr; GRANT Then quit, \q createlang plpgsql gis psql -d gis -f /usr/share/postgresql/contric/postgis.sql psql -d gis -f /usr/share/postgresql/contric/spatial_ref_sys.sql psql gis GRANT ALL on geometry_columns TO tmohr; GRANT ALL on spatial_ref_sys TO tmohr; GRANT ALL ON SCHEMA PUBLIC TO tmohr; osm2pgsql -s -l /local/ftp/planet-100310.osm.bz2 And this last command leads to failures: Using projection SRS 4326 (Latlong) Setting up table: planet_osm_point HINWEIS: Tabelle »planet_osm_point« existiert nicht, wird übersprungen HINWEIS: Tabelle »planet_osm_point_tmp« existiert nicht, wird übersprungen Setting up table: planet_osm_line HINWEIS: Tabelle »planet_osm_line« existiert nicht, wird übersprungen HINWEIS: Tabelle »planet_osm_line_tmp« existiert nicht, wird übersprungen Setting up table: planet_osm_polygon HINWEIS: Tabelle »planet_osm_polygon« existiert nicht, wird übersprungen HINWEIS: Tabelle »planet_osm_polygon_tmp« existiert nicht, wird übersprungen Setting up table: planet_osm_roads HINWEIS: Tabelle »planet_osm_roads« existiert nicht, wird übersprungen HINWEIS: Tabelle »planet_osm_roads_tmp« existiert nicht, wird übersprungen Mid: pgsql, scale=1000, cache=800MB, maxblocks=102401*8192 Setting up table: planet_osm_nodes *** WARNING: intarray contrib module not installed It seems that the tables planet_osm_point, planet_osm_line and so on do not exist. Did i miss a command to set up these tables? Which command should have created the tables? I thought they'd be created by executing postgis.sql ? Thanks for any hints, Torsten. ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] get latitude / longitude of points?
Hello, thanks a lot for your hint. http://postgis.refractions.net/documentation/manual-svn/ST_X.html http://postgis.refractions.net/documentation/manual-svn/ST_Y.html select st_X(st_transform(way,4326)), st_Y(st_transform(way,4326)) from planet_osm_point where ... I tried it like this: select st_X(st_transform(way,4326)), st_Y(st_transform(way,4326)) from planet_osm_point where name='Berlin' and place='city'; But this lead to this error: FEHLER: transform: couldn't project point (1.48918e+06 6.894e+06 0): failed to load NAD27-83 correction file (-38) TIP: PostGIS was unable to transform the point because either no grid shift files were found, or the point does not lie within the range for which the grid shift is defined. Refer to the ST_Transform() section of the PostGIS manual for details on how to configure PostGIS to alter this behaviour. So i looked it up in the documentation for st_Transform(). I got: select PostGIS_Full_Version(); postgis_full_version POSTGIS=1.4.1 GEOS=3.2.0-CAPI-1.6.0 PROJ=Rel. 4.7.1, 23 September 2009 USE_STATS (1 Zeile) So to my understanding, my version of Proj is fine, right? I then tried to google for that error and got some discussion threads. But none of them seemed to have a really usable solution. Is there any hint you could give me to solve this problem? Maybe there's a way around this in mapnik? Thanks for any hints, Torsten. ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] get latitude / longitude of points?
Hello, first, thank you all for your hints. You might also consider importing with osm2pqsql with the -l flag (use lat/lon) that way your database will be in a EPSG:4326 official projection (which 900913 is not) and you will have an easier life if you want to convert between projections. I am also a *fan* of using wgs84 in my postgis database when it comes to OSM data under the simple rule of fist that it is in my opinion best to keep data in the projection it was created with and for GPS this is always wgs84. For my national dutch data derived from official government bodies; my rule is store it in EPSG:28992 (the official dutch projection) because that is the coordinate-system they survey in. I think this is the next thing i'll try. I just downloaded the latest version of planet_osm and i'll install in WGS84 (if that does not break any other programs / scripts). I mainly use mapnik. It also looks natural to me to install in WGS84 and if that also solves some problems, that's great. Best regards, Torsten. ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
[OSM-talk] get latitude / longitude of points?
Hi, i'm not sure what is the best way, Mapnik or plain postgresql, maybe somebody can give me a hint? I'd like to get the coordinates of a point, e.g. Berlin or another city. In postgres i can do: psql -d gis select * from planet_osm_point where name = 'Berlin'; Now several data are shown. Which of them are the coordinates? And even more important, how do i convert it to latitude / longitude (in fractions, don't need minutes and seconds). Or is there a more convenient way in Mapnik available? Thanks for any hints, Torsten. ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] scale a ShapeFile in Y-direction?
Hello, thanks for taking a look at it. The output is ~ 19000 lines, so i'll just show the top ~70 lines: Had to open data source read-only. INFO: Open of `world_boundaries_m.shp' using driver `ESRI Shapefile' successful. Layer name: world_boundaries_m Geometry: Polygon Feature Count: 3807 Extent: (-20037400.00, -19929239.11) - (20037400.00, 18375854.709643) Layer SRS WKT: PROJCS[Mercator, GEOGCS[GCS_WGS_1984, DATUM[WGS_1984, SPHEROID[WGS_1984,6378137,298.257223563]], PRIMEM[Greenwich,0], UNIT[Degree,0.017453292519943295]], PROJECTION[Mercator_1SP], PARAMETER[latitude_of_origin,0], PARAMETER[central_meridian,0], PARAMETER[scale_factor,1], PARAMETER[false_easting,0], PARAMETER[false_northing,0], UNIT[Meter,1]] CAT: Real (16.0) FIPS_CNTRY: String (80.0) CNTRY_NAME: String (80.0) OGRFeature(world_boundaries_m):0 CAT (Real) = 15 FIPS_CNTRY (String) = AY CNTRY_NAME (String) = Antarctica OGRFeature(world_boundaries_m):1 CAT (Real) = 15 FIPS_CNTRY (String) = AY CNTRY_NAME (String) = Antarctica OGRFeature(world_boundaries_m):2 CAT (Real) = 15 FIPS_CNTRY (String) = AY CNTRY_NAME (String) = Antarctica OGRFeature(world_boundaries_m):3 CAT (Real) = 15 FIPS_CNTRY (String) = AY CNTRY_NAME (String) = Antarctica OGRFeature(world_boundaries_m):4 CAT (Real) = 15 FIPS_CNTRY (String) = AY CNTRY_NAME (String) = Antarctica OGRFeature(world_boundaries_m):5 CAT (Real) = 15 FIPS_CNTRY (String) = AY CNTRY_NAME (String) = Antarctica OGRFeature(world_boundaries_m):6 CAT (Real) = 174 FIPS_CNTRY (String) = NZ CNTRY_NAME (String) = New Zealand OGRFeature(world_boundaries_m):7 CAT (Real) = 174 FIPS_CNTRY (String) = NZ CNTRY_NAME (String) = New Zealand OGRFeature(world_boundaries_m):8 CAT (Real) = 174 FIPS_CNTRY (String) = NZ CNTRY_NAME (String) = New Zealand It additionally tells me on stderr: ERROR 4: Unable to open world_boundaries_m.shp or world_boundaries_m.SHP. Thanks for any hints, Torsten. Am Montag, 11. Mai 2009 12:42:44 schrieb Juan Lucas Dominguez Rubio: Hi: I'm curious about that shapefile that needs some stretching. Assuming its name is filename.shp, try to type this: ogrinfo -geom=NO filename.shp filename what is the output? Regards, Juan Lucas Hello Frederik, thanks for your hint. Yes, i know about projections. Actually, i reprojected the rester images of blue marble from a form of WGS84 to Mercaator with an own program. But as i've heard it, world_boundaries_m is defect. But as an overlay to represent the boundaries it would be ok. If that information was a misunderstanding and could be fixed with the right projection that would be awesome. If i use shoreline_300 instead, the projection is perfectly fine, but if you try to render it _not_filled_ with a LineSymbolizer instead of a PolygonSymbolizer, you get some disturbing plates. But the projection is fine. A ShapeFile contains the source SRS inside it, right? When rendering world_boundaries_m and shoreline_300 i used the same target SRS. But the result leads to different positions on the final map. Does that mean that world_boundaries_m is defect? Is there a way to fix it somehow? Or would scaling be possible? Best regards, Torsten. Hi, Torsten Mohr wrote: I have a ShapeFile that seems to be incorrect, scaling it in Y-direction could make it fit the background. Do you have a basic understanding of coordinate projections? If not, you'd be well advised to spend a few hours reading on the subject (start with Wikipedia, take it from there). You need to find out which projection your shapefile is in, and then set the correct one in your map file, and things are likely to work. Simply stretching the data from the shapefile is very unlikely to yield the desired results - you will probably find that the stretch factor that makes Iceland and the Equator fit will still have France out of place. Bye Frederik ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk ___ talk mailing list talk@openstreetmap.org http
Re: [OSM-talk] scale a ShapeFile in Y-direction?
. But as an overlay to represent the boundaries it would be ok. If that information was a misunderstanding and could be fixed with the right projection that would be awesome. If i use shoreline_300 instead, the projection is perfectly fine, but if you try to render it _not_filled_ with a LineSymbolizer instead of a PolygonSymbolizer, you get some disturbing plates. But the projection is fine. A ShapeFile contains the source SRS inside it, right? When rendering world_boundaries_m and shoreline_300 i used the same target SRS. But the result leads to different positions on the final map. Does that mean that world_boundaries_m is defect? Is there a way to fix it somehow? Or would scaling be possible? Best regards, Torsten. Hi, Torsten Mohr wrote: I have a ShapeFile that seems to be incorrect, scaling it in Y-direction could make it fit the background. Do you have a basic understanding of coordinate projections? If not, you'd be well advised to spend a few hours reading on the subject (start with Wikipedia, take it from there). You need to find out which projection your shapefile is in, and then set the correct one in your map file, and things are likely to work. Simply stretching the data from the shapefile is very unlikely to yield the desired results - you will probably find that the stretch factor that makes Iceland and the Equator fit will still have France out of place. Bye Frederik ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] SQL
Hello, i just found out that the missing states are called: Freistaat Bayern Freistaat Sachsen Freistaat Thüringen That was the problem. Best regards, Torsten. On Sun, 2009-05-10 at 06:49 +0200, Torsten Mohr wrote: I also tried to access Thüringen by its osm_id, but also no success. In PSQL gis: gis= select osm_id, name from planet_osm_polygon where name like 'Thüringen' limit 1000; osm_id | name +--- -76689 | Thüringen (1 Zeile) Can anybody tell me how to draw the three missing states? Is there an explanation why they are missing? Since the entry is in the polygon table, the only obvious problem I can think of is the direction of the polygon, clockwise vs counter-clockwise. Mapnik Postgis really want all polygons to be clockwise but the osm2pgsql code does not guarantee this. Try doing: $ psql gis gis= update planet_osm_polygon set way=ST_Reverse(way) where osm_id=-76689; On older versions of postgis, ST_Reverse(way) might need to reverse(way). Is it possible to access parts from PostGIS by their osm_id from osm.xml? Filtering on osm_id should work, but it would be better to put this into a WHERE osm_id=... clause in the datasource query. Jon ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] SQL, Where are Thüringen , Bayern a nd Sachsen?
Hello Jon, thanks a lot for your hints. I just tried updating the entry for Thüringen, but it did not help, Thüringen was not drawn. I actually tried it the way you described, in one try i had an own Layer für Thüringen with an own Style without Filter. In the Layer i changed the SQL query to look for a special osm_id. I also just tried in SQL: update planet_osm_polygon set name='thueringen' where osm_id=-76689; It seems the name was not the problem, it did not improve the issue. One more thing i just found out: select way from planet_osm_polygon where name='Hessen'; way in Hessen gives much more data than way in Thüringen. I don't think that entry even represents the boundary of Thüringen. It looks to me my question was wrong, it seems to me it should be Why are Thüringen, Bayern and Sachsen missing? Is there a way to find out which entry represents the boundarys of the missing federal states? Thanks for any hints, Torsten. Am Sonntag, 10. Mai 2009 14:19:35 schrieb Jon Burgess: On Sun, 2009-05-10 at 06:49 +0200, Torsten Mohr wrote: I also tried to access Thüringen by its osm_id, but also no success. In PSQL gis: gis= select osm_id, name from planet_osm_polygon where name like 'Thüringen' limit 1000; osm_id | name +--- -76689 | Thüringen (1 Zeile) Can anybody tell me how to draw the three missing states? Is there an explanation why they are missing? Since the entry is in the polygon table, the only obvious problem I can think of is the direction of the polygon, clockwise vs counter-clockwise. Mapnik Postgis really want all polygons to be clockwise but the osm2pgsql code does not guarantee this. Try doing: $ psql gis gis= update planet_osm_polygon set way=ST_Reverse(way) where osm_id=-76689; On older versions of postgis, ST_Reverse(way) might need to reverse(way). Is it possible to access parts from PostGIS by their osm_id from osm.xml? Filtering on osm_id should work, but it would be better to put this into a WHERE osm_id=... clause in the datasource query. Jon ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] SQL
Hello, i just found out that the missing states are called: Freistaat Bayern Freistaat Sachsen Freistaat Thüringen That was the problem. Best regards, Torsten. On Sun, 2009-05-10 at 06:49 +0200, Torsten Mohr wrote: I also tried to access Thüringen by its osm_id, but also no success. In PSQL gis: gis= select osm_id, name from planet_osm_polygon where name like 'Thüringen' limit 1000; osm_id | name +--- -76689 | Thüringen (1 Zeile) Can anybody tell me how to draw the three missing states? Is there an explanation why they are missing? Since the entry is in the polygon table, the only obvious problem I can think of is the direction of the polygon, clockwise vs counter-clockwise. Mapnik Postgis really want all polygons to be clockwise but the osm2pgsql code does not guarantee this. Try doing: $ psql gis gis= update planet_osm_polygon set way=ST_Reverse(way) where osm_id=-76689; On older versions of postgis, ST_Reverse(way) might need to reverse(way). Is it possible to access parts from PostGIS by their osm_id from osm.xml? Filtering on osm_id should work, but it would be better to put this into a WHERE osm_id=... clause in the datasource query. Jon ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] SQL, Where are Thüringen , Bayern a nd Sachsen?
Hello Jon, thanks a lot for your hints. I just tried updating the entry for Thüringen, but it did not help, Thüringen was not drawn. I actually tried it the way you described, in one try i had an own Layer für Thüringen with an own Style without Filter. In the Layer i changed the SQL query to look for a special osm_id. I also just tried in SQL: update planet_osm_polygon set name='thueringen' where osm_id=-76689; It seems the name was not the problem, it did not improve the issue. One more thing i just found out: select way from planet_osm_polygon where name='Hessen'; way in Hessen gives much more data than way in Thüringen. I don't think that entry even represents the boundary of Thüringen. It looks to me my question was wrong, it seems to me it should be Why are Thüringen, Bayern and Sachsen missing? Is there a way to find out which entry represents the boundarys of the missing federal states? Thanks for any hints, Torsten. Am Sonntag, 10. Mai 2009 14:19:35 schrieb Jon Burgess: On Sun, 2009-05-10 at 06:49 +0200, Torsten Mohr wrote: I also tried to access Thüringen by its osm_id, but also no success. In PSQL gis: gis= select osm_id, name from planet_osm_polygon where name like 'Thüringen' limit 1000; osm_id | name +--- -76689 | Thüringen (1 Zeile) Can anybody tell me how to draw the three missing states? Is there an explanation why they are missing? Since the entry is in the polygon table, the only obvious problem I can think of is the direction of the polygon, clockwise vs counter-clockwise. Mapnik Postgis really want all polygons to be clockwise but the osm2pgsql code does not guarantee this. Try doing: $ psql gis gis= update planet_osm_polygon set way=ST_Reverse(way) where osm_id=-76689; On older versions of postgis, ST_Reverse(way) might need to reverse(way). Is it possible to access parts from PostGIS by their osm_id from osm.xml? Filtering on osm_id should work, but it would be better to put this into a WHERE osm_id=... clause in the datasource query. Jon ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] scale a ShapeFile in Y-direction?
Hello Frederik, thanks for your hint. Yes, i know about projections. Actually, i reprojected the rester images of blue marble from a form of WGS84 to Mercaator with an own program. But as i've heard it, world_boundaries_m is defect. But as an overlay to represent the boundaries it would be ok. If that information was a misunderstanding and could be fixed with the right projection that would be awesome. If i use shoreline_300 instead, the projection is perfectly fine, but if you try to render it _not_filled_ with a LineSymbolizer instead of a PolygonSymbolizer, you get some disturbing plates. But the projection is fine. A ShapeFile contains the source SRS inside it, right? When rendering world_boundaries_m and shoreline_300 i used the same target SRS. But the result leads to different positions on the final map. Does that mean that world_boundaries_m is defect? Is there a way to fix it somehow? Or would scaling be possible? Best regards, Torsten. Hi, Torsten Mohr wrote: I have a ShapeFile that seems to be incorrect, scaling it in Y-direction could make it fit the background. Do you have a basic understanding of coordinate projections? If not, you'd be well advised to spend a few hours reading on the subject (start with Wikipedia, take it from there). You need to find out which projection your shapefile is in, and then set the correct one in your map file, and things are likely to work. Simply stretching the data from the shapefile is very unlikely to yield the desired results - you will probably find that the stretch factor that makes Iceland and the Equator fit will still have France out of place. Bye Frederik ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
[OSM-talk] SQL
Hello, when connecting to PostGIS and querying for german federal states i can find them all in either: planet_osm_line planet_osm_polygon It also is no problem to find states with special characters like in Baden-Württemberg. But no matter what i do, i don't find Bayern and Sachsen. I do find Thüringen but it is not drawn when used in osm.xml. I try drawing the states with (works for all except the three mentioned): Style name=grmnx Rule Filter[name] = 'FILL_STATE_NAME_IN_HERE'/Filter MaxScaleDenominator2500/MaxScaleDenominator MinScaleDenominator60/MinScaleDenominator LineSymbolizer CssParameter name=stroke#FF6565/CssParameter /LineSymbolizer /Rule /Style Layer name=grmny status=on srs=+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgri...@null +no_defs +over StyleNamegrmnx/StyleName Datasource Parameter name=typepostgis/Parameter Parameter name=usertmohr/Parameter Parameter name=dbnamegis/Parameter Parameter name=table(select * from planet_osm_polygon order by z_order,way_area desc) as grmnx/Parameter Parameter name=estimate_extentfalse/Parameter Parameter name=extent-20037508,-19929239,20037508,19929239/Parameter /Datasource /Layer Layer name=grmnx status=on srs=+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgri...@null +no_defs +over StyleNamegrmnx/StyleName Datasource Parameter name=typepostgis/Parameter Parameter name=usertmohr/Parameter Parameter name=dbnamegis/Parameter Parameter name=table(select * from planet_osm_line order by z_order,way_area desc) as grmnx/Parameter Parameter name=estimate_extentfalse/Parameter Parameter name=extent-20037508,-19929239,20037508,19929239/Parameter /Datasource /Layer I also tried to access Thüringen by its osm_id, but also no success. In PSQL gis: gis= select osm_id, name from planet_osm_polygon where name like 'Thüringen' limit 1000; osm_id | name +--- -76689 | Thüringen (1 Zeile) Can anybody tell me how to draw the three missing states? Is there an explanation why they are missing? Is it possible to access parts from PostGIS by their osm_id from osm.xml? Thanks for any hints, Torsten. ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] Borders of the federal states of Germany (again)
Hello Jukka, that looks very interesting! Thanks a lot! With a query like: select * from planet_osm_line where boundary is not null and name like 'Schleswig%' LIMIT 100; I get exactly one entry with heaps of data, seems it represents Schleswig- Holstein, a federal state. Seems it needs some refinement, it doesn't seem to work for Bayern or some others. But those seem to be in planet_osm_polygon then. Is there a way to create a ShapeFile from these data? Or something i can import into QGIS? Thanks a lot, Torsten. Am Donnerstag, 7. Mai 2009 08:15:14 schrieb Jukka Rahkonen: Torsten Mohr tmohr at s.netic.de writes: Hello, this issue is not related to another post that i did here regarding the outline of the world (shoreline_300). I want to create a map of Germany with many details, especially the federal states should have different background colors. I got a hint already for a ShapeFile that contains these data. That file looked great, but the borderlines defined in there are _much_ more coarse than the data in the PostGIS, so creating the background from the rough, coarse data does not look that good. It does not match the borders that are drawn. Is there a way to get the border information from the PostGIS server that runs locally on my machine? Hi, Import osm data into PostGIS with osm2pgsql utility and query borders with SQL query like SELECT * FROM osm_line WHERE admin_level is not null; At least in the Finnish data excerpt the borders are lines. For making coloured areas border lines must first be converted to polygons. Last step is to draw the states with different colours for example by adding a single value theme looking at state name etc. All this can be done with OpenJUMP, QGis, uDig, gvSIG etc. ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] gdalwarp question
Hello Jukka, no, thanks for your help, any hint and discussion is really appreciated. Sorry, I misunderstood a bit what you were going to do. It may well be that for Mapnik you'll need to reproject raster image first. I do not much about Mapnik and while a have been using gdal utilities very much I don't believe I have ever needed to create output in Google projection. By first look what you have done does make sense. You can make a couple of further tests: I solved the issue now in a different way. Based on information on wikipedia about mercaator projection i did the reprojection of the blue marble myself. It took quite a while to execute, but the reprojection itself worked quite fine. Now the borders (shoreline_300) are exactly on the borders of the continents and islands on the blue marble. The relevant part of the script i use is attached below, if anybody is interested please write me an email (i use an own library to handle the images themselves, that part needs to be adapted to e.g. PyImage). Thank you all for providing me help, i hope the script below is of value to anybody. Best regards, Torsten. #! /usr/bin/python #coding: latin-1 import ri from math import * import gc import sys #he = 21600 he = 43200 np = 8 skp_a = 90.0 - (atan(sinh(pi)) * 180.0 / pi) print skp_a skp_p = int(he * skp_a / 90.0) print skp_p #sys.exit(0) pat = '/local/vid/earth/strs_%i.tif' max_phi = atan(sinh(pi)) print max_phi, max_phi * 180 / pi def do_img(img, i): wi = img.width() hi = img.height() yi0 = hi / 2 wo = wi ho = he yo0 = ho / 2 print i, i, wo, wo, ho, ho out = ri.Ri(wo, ho, 1, 0) for x in range(wo): for ydo in range(ho / 2): yn = float(ydo) / (ho / 2) * pi phi = asin(tanh(yn)) ydi = phi / max_phi * (hi / 2) r, g, b, a = img.get(x, int(yi0 + ydi)) out.set(x, int(yo0 + ydo), r, g, b) r, g, b, a = img.get(x, int(yi0 - ydi)) out.set(x, int(yo0 - ydo), r, g, b) out.saveAsPng(/local/vid/earth/ta_%i.png % (i)) del out for i in range(4, np): img = ri.Ri(pat % (i), ri.TIFF) do_img(img, i) del img gc.collect() ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
[OSM-talk] shoreline_300, world borders _without_ rectangles
Hello, i'm glad i got the blu marble working nw and can create a map of the whole world with the satellite images of the earth as background. It looks really great. But what would be great if i could also overlay the world / continents / islands / states borders as outline. I can't use the shoreline_300 file as it is split into several polygons and adds heaps of plates to the earth and does not look good. Does anybody know a way to get the world outline (as in shoreline_300) but without the plates (interruptions of the polygons)? Is it maybe possible to get these data from PostGIS with a clever SQL request? Thanks for any hints, Torsten. ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
[OSM-talk] Borders of the federal states of Germany (again)
Hello, this issue is not related to another post that i did here regarding the outline of the world (shoreline_300). I want to create a map of Germany with many details, especially the federal states should have different background colors. I got a hint already for a ShapeFile that contains these data. That file looked great, but the borderlines defined in there are _much_ more coarse than the data in the PostGIS, so creating the background from the rough, coarse data does not look that good. It does not match the borders that are drawn. Is there a way to get the border information from the PostGIS server that runs locally on my machine? Things i tried so far: - Google for it - Get the data from PostGIS with SQL commands - Download the single federal states from www.geofabrik.de as ShapeFiles and then find out they don't contain the borders. - Download Germany.shp from www.geofabrik.de as ShapeFiles and then find out they don't contain the borders. - Install QGIS and try to get the data from PostGIS (failed as my PostGIS installation does not seem to support GEOS). With the last topic there could still be a chance to get a result, i still need to try that. But it means to re-install PostGIS and add some steps that i'm not yet sure about (GEOS support). It would be great if anybody had a hint on this. Thanks for any hints, Torsten. ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] gdalwarp question
Hello Jukka, thanks for your hint, but to my understanding this contradicts the description of RasterImage in Mapnik and the web page that converts blue marble using gdalwarp. In the documentation for RasterImage it says that Mapnik can't (yet) reproject reaster image data, they have to match the target projection. I got that answer to another question: http://www.mail-archive.com/mapnik-us...@lists.berlios.de/msg01213.html So if in osm.xml there is: srs=+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgri...@null +no_defs +over Then i think this should be the target projection (if i want to mix a raster image into it). The blue marble has lat / lon directly mapped to x / y coordinates. To my understanding this is similar to WGS84, to add the scaling with a world file makes sense to me. Looking at this page i see a description of projections and the use of gdalwarp that describes how to get http://egb13.net/2009/04/bending-the-earth-gdalwarp-and-the-blue-marble/ But in the end, my understanding did not leave to a correctly projected image... Best regards, Torsten. Am Sonntag, 3. Mai 2009 14:11:06 schrieb Jukka Rahkonen: Torsten Mohr tmohr at s.netic.de writes: Hello, thanks for that hint. Right, the chosen projection won't work around the poles, i don't expect that. In the call to gdalwarp i gave the source projection (EPSG:4326 or WGS84) and as target projection i gave the projection used in osm.xml. Hi, Your target projection is the so called Google projection, or epsg:900913, or nowadays officially epsg:3785. It is the projection used in OSM slippy map, but the native OSM data are in epsg:4326. Therefore you should warp the downloaded images _into_ epsg:4326, not from that. Unfortunately I cannot say what would be the correct source projection definition for your original images. An easy way to test your warped images is to download some OSM data in shapefile format and in epsg:4326 projection from Geofabrik.de, open the warped image with some GIS program like QGis or OpenJUMP together with OSM shapefile and see if they suit well together. Gdalwarp options are documented at http://gdal.org/gdalwarp.html but some further reading may be necesssary to understand what all the options mean. -Jukka Rahkonen- ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] gdalwarp question
Awesome! Congratulations, i envy you. I did not want to mislead people, maybe a misunderstanding? I wrote in my mail that my understanding did not lead to a correct image, i meant that somewhere there must be a failure in my misunderstanding. I did not want to say that gdalwarp does not work, it obviously does work. Has anybody got a hint on which of my assumptions is wrong? a. The source SRS is epsg:4362 b. The target SRS should be as in osm.xml c. Mapnik can not warp a raster image, it has to be pre-warped. d. The world file of my TIF file is incorrect. e. anything else? I just tried the other hint of skipping the regions around the poles, the height is 21600, which is +90.0 to -90.0. I tried to go from +85.051128 to -85.051128 (atan(sinh(pi)) as this was mentioned to be the limit of mercaator. So i skipped 593 pixels at top and at bottom and changed the world file for a strip generated like that: 0.00833507730103945403 0.00 0.00 -0.00833507730103945403 0.0 85.051128779806589 No success... I began to reproject the blue marble with an own script but there is a slight offset / scale yet. Thanks for any hints, Torsten. Please do not mislead people. gdalwarp works fine: http://tinyurl.com/germany-blue-marble Regards Juan Lucas Hello Jukka, thanks for your hint, but to my understanding this contradicts the description of RasterImage in Mapnik and the web page that converts blue marble using gdalwarp. In the documentation for RasterImage it says that Mapnik can't (yet) reproject reaster image data, they have to match the target projection. I got that answer to another question: http://www.mail-archive.com/mapnik-us...@lists.berlios.de/msg01213.html So if in osm.xml there is: srs=+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgri...@null +no_defs +over Then i think this should be the target projection (if i want to mix a raster image into it). The blue marble has lat / lon directly mapped to x / y coordinates. To my understanding this is similar to WGS84, to add the scaling with a world file makes sense to me. Looking at this page i see a description of projections and the use of gdalwarp that describes how to get http://egb13.net/2009/04/bending-the-earth-gdalwarp-and-the-blue-marble/ But in the end, my understanding did not leave to a correctly projected image... Best regards, Torsten. Am Sonntag, 3. Mai 2009 14:11:06 schrieb Jukka Rahkonen: Torsten Mohr tmohr at s.netic.de writes: Hello, thanks for that hint. Right, the chosen projection won't work around the poles, i don't expect that. In the call to gdalwarp i gave the source projection (EPSG:4326 or WGS84) and as target projection i gave the projection used in osm.xml. Hi, Your target projection is the so called Google projection, or epsg:900913, or nowadays officially epsg:3785. It is the projection used in OSM slippy map, but the native OSM data are in epsg:4326. Therefore you should warp the downloaded images _into_ epsg:4326, not from that. Unfortunately I cannot say what would be the correct source projection definition for your original images. An easy way to test your warped images is to download some OSM data in shapefile format and in epsg:4326 projection from Geofabrik.de, open the warped image with some GIS program like QGis or OpenJUMP together with OSM shapefile and see if they suit well together. Gdalwarp options are documented at http://gdal.org/gdalwarp.html but some further reading may be necesssary to understand what all the options mean. -Jukka Rahkonen- ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk ___ talk mailing list talk
Re: [OSM-talk] gdalwarp question
Hello, i got much further converting an image with gdalwarp, mainly with these two links: http://egb13.net/2009/04/bending-the-earth-gdalwarp-and-the-blue-marble/ http://en.wikipedia.org/wiki/World_file Basically i got the blue marble (high quality TIF image of the earth, consists of two files, west and east, each has 21600 x 21600 pixel. So i split the image into 8 strips, each 5400 x 21600. For example str_4.tif is the 4th strip going fromnorth pole to south pole left goes through Greenwhich, right stops just before the Horn of Africa (west side). I've created a world file str_4.tfw (i've added the comments just now): 0.0083 # delta x in angles per pixel 0.00 # no rotation 0.00 # no rotation -0.0083 # delta y in angles per pixel 0.0 # upper left corner X 90.0 # upper left corner Y Now i call gdalwarp to convert it to the SRS used in osm.xml: gdalwarp -s_srs EPSG:4326 -t_srs '+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgri...@null +no_defs +over' str_4.tif cstr_4.tif But cstr_4.tif is distorted, Africa is at 20% from the top, 40% from the top begins Antarctica and goes down to the bottom (100%). Is the world file incorrect? Is the call to gdalwarp incorrect? It would be great if anybody got a hint for me. Also, i didn't find any explanation for the options of gdalwarp or the parts in an SRS. If anybody got an explanation that would be appreciated. Best regards, Torsten. Am Freitag, 1. Mai 2009 21:25:07 schrieb Juan Lucas Dominguez Rubio: Hello, i have an image that can be wrapped around a sphere, its x / y coordinates directly map to latitude / longitude. What do you mean by that? Do you mean that when you open it with some GIS app, the status bar tells the correct (lat, lon) of the place where the mouse is? Some GIS apps reproject raster files by default without explicitly letting the user know. Use this utility and tell us the output: gdalinfo filename Is that enough information to tell the SRS of that image? Strictly, no, but if we talk about (lat, lon), the EPSG:4326 coordinate system is by far the most common, so if your coordinates are originally in (lat, lon), they are very likely to be in EPSG:4326. Background is that i'd like to transform that image so it matches the SRS used in osm.xml. Would that be WGS84? Or is it called epsg:4326? (Do they mean the same?) Yes, informally, when people say WGS84 they mean EPSG:4326. Ask Mr Google or the wikipedia for details Thanks for any hints, Torsten. Regards Juan Lucas ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] gdalwarp question
Hello, thanks for that hint. Right, the chosen projection won't work around the poles, i don't expect that. In the call to gdalwarp i gave the source projection (EPSG:4326 or WGS84) and as target projection i gave the projection used in osm.xml. But the result is not what i expected and i also can't explain it. Best regards, Torsten. On May 2, 2009, at 8:53 AM, Torsten Mohr wrote: But cstr_4.tif is distorted, Africa is at 20% from the top, 40% from the top begins Antarctica and goes down to the bottom (100%). There are a bunch of projections that don't work near the poles. I'm not an expert, and my book on projections is home, but it's quite possible that your chosen projection cannot properly represent the poles. -- Russ Nelson - http://community.cloudmade.com/blog - http://wiki.openstreetmap.org/wiki/User:RussNelson r...@cloudmade.com - Twitter: Russ_OSM - http://openstreetmap.org/user/RussNelson ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] German Shapefile, federal states?
Hello Juan, thanks a lot for that link, it looks like this is exactly what i was searching for. Also, the hint to use a program like qgis was great, thanks to all your hints. It took me a while to find out that the scale of the data in PostGIS and in shoreline_300 are different to the scale in germany.shp. QGIS renders both with these settings: +proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs But the Polygons in germany are drawn at lat / lon 0 / 0, on the equator before Africa. Do i need to change that settings to make the Polygons match? Where do you want to draw that map? I'm not sure if i understand you corectly, i want to render a huge map of Germany using the data in PostGIS. But i want to show the federal states in different colors. Best regards, Torsten. Am Donnerstag, 30. April 2009 21:04:01 schrieb Juan Lucas Dominguez Rubio: Hello, Torsten. I think the 16 german federal states (lander) are available as a shapefile in lots of different places. Here is one example: http://wetnet.net/~we7u/xastir/maps/shapefile/Germany/ That is a shapefile (compressed) with 16 polygons, and you also have the population and extension of each one. You have to open it with some GIS application. Where do you want to draw that map? Regards, Juan Lucas De: talk-boun...@openstreetmap.org en nombre de Torsten Mohr Enviado el: jue 30/04/2009 19:20 Para: OSM Talk Asunto: Re: [OSM-talk] German Shapefile, federal states? Ouch, that's bad. i thought they'd contain some actual data, size implied that. I wonder if anybody knows a way to render the 16 German federal states (Bundesländer)? Actually that's what i want to do in the end.. Is there a way to find out what is in a Shapefile? Like that i can write filters like Filter[CNTRY_NAME] = 'Germany'/Filter in world_boundaries_m? Is there a way to find this out from a Shapefile? Thanks for any hints, Torsten. Am Mittwoch, 29. April 2009 23:06:18 schrieb Frederik Ramm: Hi, Torsten Mohr wrote: has anybody got some experience with the Shapefiles at: http://dataservice.eea.europa.eu/dataservice/metadetails.asp?id=760 All I can see are shapefiles that contain a reference grid - no actual geodata? Bye Frederik ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] German Shapefile, federal states?
Awesome, thanks a lot. It all worked fine, i converted the germany.shp as you mentioned. I was not sure about the SRS of source and target, especially the parts mentioned in osm.xml. Googling for them did not help and ogr2ogr also does not seem to explain them. Best regards, Torsten. Am Freitag, 1. Mai 2009 11:19:21 schrieb Juan Lucas Dominguez Rubio: Hello, Yes, germany.shp is in +proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs (used by GPS devices ans by the OSM database), but shoreline_300 is in the spherical mercator projection, which is the projection used by OSM to _render_ the maps because it looks nicer than WGS84 and is widely used. So you either have to reproject germany.shp to spherical mercator (see attached screenshot) or reproject shoreline_300 to WGS84. To do this, you can use FWTools (http://fwtools.maptools.org). It includes command-line utilities: ogr2ogr -s_srs epsg:4326 -t_srs +proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgri...@null +no_defs germany_sm.shp germany.shp OR ogr2ogr -s_srs +proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgri...@null +no_defs -t_srs epsg:4326 shoreline_300_wgs84.shp shoreline_300.shp (as you can see, the last two parameters are not source destination, but destination source) The EPSG code for WGS84 is EPSG:4326 The EPSG code for WGS84 is EPSG:900913 or EPSG:3785 (synonyms) Regards, Juan Lucas De: talk-boun...@openstreetmap.org en nombre de Torsten Mohr Enviado el: vie 01/05/2009 10:30 Para: OSM Talk Asunto: Re: [OSM-talk] German Shapefile, federal states? Hello Juan, thanks a lot for that link, it looks like this is exactly what i was searching for. Also, the hint to use a program like qgis was great, thanks to all your hints. It took me a while to find out that the scale of the data in PostGIS and in shoreline_300 are different to the scale in germany.shp. QGIS renders both with these settings: +proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs But the Polygons in germany are drawn at lat / lon 0 / 0, on the equator before Africa. Do i need to change that settings to make the Polygons match? Where do you want to draw that map? I'm not sure if i understand you corectly, i want to render a huge map of Germany using the data in PostGIS. But i want to show the federal states in different colors. Best regards, Torsten. Am Donnerstag, 30. April 2009 21:04:01 schrieb Juan Lucas Dominguez Rubio: Hello, Torsten. I think the 16 german federal states (lander) are available as a shapefile in lots of different places. Here is one example: http://wetnet.net/~we7u/xastir/maps/shapefile/Germany/ That is a shapefile (compressed) with 16 polygons, and you also have the population and extension of each one. You have to open it with some GIS application. Where do you want to draw that map? Regards, Juan Lucas De: talk-boun...@openstreetmap.org en nombre de Torsten Mohr Enviado el: jue 30/04/2009 19:20 Para: OSM Talk Asunto: Re: [OSM-talk] German Shapefile, federal states? Ouch, that's bad. i thought they'd contain some actual data, size implied that. I wonder if anybody knows a way to render the 16 German federal states (Bundesländer)? Actually that's what i want to do in the end.. Is there a way to find out what is in a Shapefile? Like that i can write filters like Filter[CNTRY_NAME] = 'Germany'/Filter in world_boundaries_m? Is there a way to find this out from a Shapefile? Thanks for any hints, Torsten. Am Mittwoch, 29. April 2009 23:06:18 schrieb Frederik Ramm: Hi, Torsten Mohr wrote: has anybody got some experience with the Shapefiles at: http://dataservice.eea.europa.eu/dataservice/metadetails.asp?id=760 All I can see are shapefiles that contain a reference grid - no actual geodata? Bye Frederik ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] German Shapefile, federal states?
Ouch, that's bad. i thought they'd contain some actual data, size implied that. I wonder if anybody knows a way to render the 16 German federal states (Bundesländer)? Actually that's what i want to do in the end.. Is there a way to find out what is in a Shapefile? Like that i can write filters like Filter[CNTRY_NAME] = 'Germany'/Filter in world_boundaries_m? Is there a way to find this out from a Shapefile? Thanks for any hints, Torsten. Am Mittwoch, 29. April 2009 23:06:18 schrieb Frederik Ramm: Hi, Torsten Mohr wrote: has anybody got some experience with the Shapefiles at: http://dataservice.eea.europa.eu/dataservice/metadetails.asp?id=760 All I can see are shapefiles that contain a reference grid - no actual geodata? Bye Frederik ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
[OSM-talk] osm.xml, Filter, what tags are available?
Hello, looking into osm.xml i see Rules with Filters like: Filter[tourism] = 'attraction'/Filter How can i find out what tags (right wording? I mean keywords like 'tourism') are available? What values could they have? Background is that i want to write an own Rule (with Filter) for country names, i want to highlight a country and render a map, so i want to make other countries a bit darker so i can still see them but see the borders of the highlighted country clearly. So i guess the tags i want to filter are in world_borders. Under what tag are country names stored? Does that make sense? Is it clear what i want to do? It would be great if anybody got a hint on this. Best regards, Torsten. ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] osm.xml, Filter, what tags are available?
Hi, i just found out using a hex editor that the rule i need is: Filter[CNTRY_NAME] = 'Germany'/Filter It would be great to know if there is another way than using a hex editor, has anybody got a hint? Best regards, Torsten. Am Mittwoch, 29. April 2009 21:22:34 schrieb Torsten Mohr: Hello, looking into osm.xml i see Rules with Filters like: Filter[tourism] = 'attraction'/Filter How can i find out what tags (right wording? I mean keywords like 'tourism') are available? What values could they have? Background is that i want to write an own Rule (with Filter) for country names, i want to highlight a country and render a map, so i want to make other countries a bit darker so i can still see them but see the borders of the highlighted country clearly. So i guess the tags i want to filter are in world_borders. Under what tag are country names stored? Does that make sense? Is it clear what i want to do? It would be great if anybody got a hint on this. Best regards, Torsten. ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
[OSM-talk] GPS logger
Hi, can anybody give me a hint on a GPS logger? I'd just like to track the position on SD card. It would be great if the battery would last for a week or even longer. That should also be much cheaper than e.g. Garmin GPS devices. Thanks for any hints, Torsten. ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
[OSM-talk] rendering some large maps, e.g. whole world
Hello, i installed PostgreSQL / PostGIS and use a modified version of this script to render maps: svn.openstreetmap.org/applications/render/mapnik/generate_image.py I've just created two maps of Germany, one is 12000 x 16000, the other is 3000 x 4000. I then get two different 'levels of detail', as expected. I'd like to print a map of Germany as a poster. My understanding is that osm.xml is configured to create maps that look fine on a screen. But the Pixels per Inch on a computer monitor are different compared to the PPI on a printed poster. So e.g. text size, symbol size and others may not look optimal when printed. Has anybody got any experience with changing osm.xml to create maps that look fine when printed (readable text, ...)? Or do i worry too much and printing PNGs looks just all right? 2. When rendering the whole world with coordinates like this: # unused: ll = (4.5, 46, 16, 56) # Germany ll = (-180.0, -90.0, 180.0, 90.0) # World Then i just get an empty file (just background). Is this related to the scale denominators in osm.xml? Can anybody give me a hint on what values to use when printing the whole planet? Thanks for any hints, Torsten. ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] rendering some large maps, e.g. whole world
Hello, thanks you very much for the answers, that helped _a_ _lot_ ! Lowering the latitude from 90.0 helped, now i can render the whole world. I can now render a map of the world and i'm trying to scale certain parameters so a printed map will look fine. Best regards, Torsten. Am Samstag, 18. April 2009 10:34:06 schrieb D Tucny: 2009/4/18 Torsten Mohr tm...@s.netic.de Hello, i installed PostgreSQL / PostGIS and use a modified version of this script to render maps: svn.openstreetmap.org/applications/render/mapnik/generate_image.py I've just created two maps of Germany, one is 12000 x 16000, the other is 3000 x 4000. I then get two different 'levels of detail', as expected. I'd like to print a map of Germany as a poster. My understanding is that osm.xml is configured to create maps that look fine on a screen. But the Pixels per Inch on a computer monitor are different compared to the PPI on a printed poster. So e.g. text size, symbol size and others may not look optimal when printed. Has anybody got any experience with changing osm.xml to create maps that look fine when printed (readable text, ...)? Or do i worry too much and printing PNGs looks just all right? A standard/typical print resolution is 300dpi, whereas a standard/typical screen resolution would be 96 dpi... So, if you had an image, viewed at native resolution, on a screen that took up an area 30cm by 30cm and looked good, to print it at it's native resolution the image would be 10cm by 10cm (approximately)... Your 12000 x 16000 image would be good for printing about 1m by 1.3m at 300dpi, any smaller and you would loose some of that resolution, any bigger and the image would start to appear pixelated... Your 3000 x 4000 image would be good for up to 25cm by 34cm at 300dpi... If you wanted to print an A0 poster, with no margins, you have a print area of 118.9cm by 84.1cm, so, an optimum resolution for your image would be 14043 x 9933 if printing at 300dpi... If you view this image at 33% scale on your computer, you'll get a rough idea of the size of features when printed (though you may want to work out the real DPI of your screen if you want it to be more accurate, e.g. the screen I'm using now is 37.6cm wide with a horizontal resolution of 1280 pixels, or 86dpi, so I'd get more accurate feel of size by using a scale of 29% when viewing the image on screen)... The maps are typically rendered for viewing on a screen, so, text and symbols may appear too small when printed, you would likely need to adjust their size for print, but, how much you adjust it can be a taste thing... I haven't done it with a map myself, but others have and hopefully they will be able to contribute here with their experiences... 2. When rendering the whole world with coordinates like this: # unused: ll = (4.5, 46, 16, 56) # Germany ll = (-180.0, -90.0, 180.0, 90.0) # World Then i just get an empty file (just background). Is this related to the scale denominators in osm.xml? It likely is a combination of the scale and potentially a lack of the coast shapefiles... The lowest level of detail just has the coast line rendered from the shapefiles... Can anybody give me a hint on what values to use when printing the whole planet? To give accurate values, people would need to know what size image you will be looking to create, so, would need to know the size and resolution you will be printing at... Hope that helps... d ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
[OSM-talk] set up PostGIS with OSM data
Hello, i have two sources of information that seem to contradict sometimes, maybe somebody can give me some hints? I used subversion to checkout svn.openstreetmap.org. After installing geos-3.1.0 i could compile and install osm2pgsql. I also downloaded and installed postgis-1.3.5. I've also set up PostgreSQL on my linux system. In svn.openstreetmap.org/applications/rendering/mapnik/install.txt i've read how to set up the tables in PostgreSQL (see below). This description is missing on: http://wiki.openstreetmap.org/wiki/Mapnik#World_Boundaries Isn't it necessary? snip # some line breaks are added... export user_name=tmohr sudo -u postgres createuser -Upostgres -S -D -R $user_name echo GRANT ALL ON SCHEMA PUBLIC TO \$user_name\; | sudo -u postgres psql -Upostgres gis sudo -u postgres createlang plpgsql gis sudo -u postgres psql -Upostgres gis /usr/share/postgresql/lwpostgis.sql \ 21 | grep -v -e 'FEHLER: aktuelle Transaktion' \ -e 'ERROR: current transaction is aborted' \ -e 'CREATE FUNCTION' -e OPERATOR echo GRANT ALL on geometry_columns TO \$user_name\; | sudo -u postgres psql -Upostgres gis echo GRANT ALL on spatial_ref_sys TO \$user_name\; | sudo -u postgres psql -Upostgres gis echo GRANT ALL ON SCHEMA PUBLIC TO \$user_name\; | sudo -u postgres psql -Upostgres gis /snip I had also downloaded: 1. planet-090408.osm.bz2 2. relations-090408.osm.bz2 (what is this one for? I did not use it at all.) 3. world_boundaries-spherical.tgz 4. processed_p.zip 5. shoreline_300.tar.bz2 I installed 3, 4 and 5, all files directly into /usr/share/mapnik/world_boundaries. Importing planet.osm as described on the openstreetmap wiki fails: schleim:/local/ftp/osm # bzcat /local/ftp/osm/planet-090408.osm.bz2 | sudo -u postgres osm2pgsql -m - osm2pgsql SVN version 0.65-14495 Using projection SRS 900913 (Spherical Mercator) Setting up table: planet_osm_point Setting up table: planet_osm_line Setting up table: planet_osm_polygon Setting up table: planet_osm_roads Mid: Ram, scale=100 Reading in file: - Processing: Node(330350k) Way(159k) Relation(0k) Speicherzugriffsfehler # The line above is German, means memory access error. Can anybody give me a hint if i've set up something wrong? Thanks for any hints, Torsten. ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
