[GRASS-user] 3D globe in NVIZ/GRASS (Christian Ferreira)

Hello Christian, is possible to have in NVIZ a 3D globe (like Google Earth)? I must create some animations for 2 German TV channels, and I'm struggling to find a open source software that can do that (not just the animation, but also the rendering/recording which must be 1920p aka full HD).

[GRASS-user] Python/Ctype interface: how to get coordinates for raster layer.

hi all, for a GRASS 6.x script I'm using the ctype interface to iterate over all lines (and cells) of a raster layer: ... for rown in xrange(rows): G_get_raster_row(infd, inrast, rown, data_type) print rown, inrast[0:cols] ... [taken from the ctypes raster example

RE: [GRASS-user] Ability to model flash flooding

Hello Ian, To learn how to use grass I've been trying to solve a real world problem. The problem that I chose was the flash flooding which occurred in south eastern Queensland. I'd like to see if grass could have provided reasonably accurate predictions and see if it could be used as a warning

[GRASS-user] r.in.wms / Wheregroup OSM WMS

Hi, I`m trying to access a WMS service for european OSM data (german link: http://www.wheregroup.com/de/freier_wms_mit_openstreetmap_daten) in GRASS 6.4 with r.in.wms in an EXPSG4326 location r.in.wms --o v=5 layers=Wald mapserver=http://osm.wheregroup.com/cgi-bin/osm_basic.xml output=Wald

[GRASS-user] GRASS @ FOSS4G

I wonder how many GRASS related talks have been submitted. Myself, I have sent one to the academic track and ask myself if to submit also a general talk like 25 years of GRASS (anyone else already?) and perhaps also the new GRASS poster (Robert, did you submit it?). Just to avoid duplication but

Re: [GRASS-user] v.patch fix/workaround needed

Hi In a first step, a polygon (A) is created using v.patch from an outline and a centroid. This works fine. v.patch: A-outline + A-centroid = A-polygon (-a Option) In a second step, the newly created polygon is added to a larger set of polygons (SET) using v.patch again. v.patch

[GRASS-user] v.patch fix/workaround needed

Hi, I am using GRASS6.3 (on SuSE) to create a polygon layer out of several individual polygons. In a first step, a polygon (A) is created using v.patch from an outline and a centroid. This works fine. In a second step, the newly created polygon is added to a larger set of polygons (SET)

[GRASS-user] m.proj transformation to EPSG3785 / KML

Hi, how can m.proj (being the frontend to cs2cs) be configured to create output in the Google projection (aka EPSG 900913 / EPSG 3785) ? These EPSG codes are currently not included in /usr/share/proj/epsg. Peter -- Dr. Peter Löwe peter.lo...@gmx.de Jetzt kostenlos herunterladen: Internet

[GRASS-user] Select shapes from image[-Gimp]/tracing in GRASS ?

Hi, can the following semi-interactive edge tracing on raster task be realized using the current GRASS modules ? * Data: A raster map (think: Landsat RGB, Corinne landcover or alike) * Input: The user provides two points, both being located on/near a border between two areas in the raster map

[GRASS-user] r.out.gdal CREATEOPT for PNG/JPG needed

Hi all, the straightforward approach to write out a raster to either a JPG or a PNG via r.out.gdal WITHOUT additional createopt-parameters results in errors (r.out.png works fine ,though). Where are the missing parameters documented? Are there examples anywhere ?(couldn't find any) Thanks,

[GRASS-user] r.out.vtk RGB / input issue

hi, i am using v.out.vtk on grass6.3 on suse. trying to export 2.5d rgb-maps to paraview using r.out.vtk always ends up with an error message: According to the module's manual it should be possible to export a RGBmap + dem by using the parameters rgbmaps=redmap,bluemap,greenmap

[GRASS-user] Re: [GRASS-dev] Seeking old version

Markus, for what its worth, I have a CDROM snapshot (?) dating from 1998, featuring: --- So, what is new in GRASS 4.2.1 (22. September 1998) and what is the difference to BAYLOR´s version? The major point is a lot of bugfixing. There is still no floating point

[GRASS-user] v.to.db: obscenely large area values for tiny islands ?!

Hi, I just observed the phenomenon of about totally exeragated area readings for islands, using GRASS 6.3.0 on SuSe with postgres (pg driver): A location of county data for northern central europe was set up from a shape file [topology had been checked with v.build], including all the tiny

[GRASS-user] Merging Boundaries and Centroids

hi, I just got stuck with a seemingly simple task: Let's assume vector layer A holds bunch of boundaries (for example, some non-overlapping circles) without categories, while vector layer B contains points/centroids which have categories AND attributes (Soil type, etc). What's the recipe to

[GRASS-user] r.mapcalc: columns()/modulo - rounding issue, possible bugfeature ?

Hi, I stumbled over this funny behavior of the col() function of r.mapcalc (GRASS6.2 and GRASS6.4, both on Linux). According to The Book, col() returns current col of moving window. I assume that for each row of a given raster layer col() should provide the values 1,2,3,4,5, etc. as it

[GRASS-user] Original location: Hot to create from the command line ?

Hi, is there an (easy) recipe to create a completely new location from scratch without using a GUI ? To be precise: If GRASS is started for the first time in -text mode (=no GUI) ** without having a sample location like Spearfish or North Carolina around**, how can location parameters

[GRASS-user] The upper limit for displaying large vector layers

Hi, the current GRASS versions share a constraint regarding the maximum size of _displayable_ vector layers. This affects both traditional GRASS monitors and map displays. While GRASS is capable to ingest and process rather large vector data sets, these can _not_ be properly be displayed when

[GRASS-user] vectors: how to find the gravitation centre of point data ?

Hi list, is there an easy way to derive the centre of a cloud of points ? I am aware that the set of vector points (cloud of points) could be used to stake out a polygon/boundary and use v.centroid etc etc to derive in turn its' centroid, but I am hoping for an easier solution .. ? This issue

[GRASS-user] strange Postgres/DBF table (layer 2) issue

Hi, I am using GRASS6.3.0 on OpenSuse. The following effects were encountered when attempting to deal with a second table for a vector layer: After connecting to Postgres using db.connect driver=pg database=host=localhost,dbname=postgres4grass and db.login user=gis the connection was

[GRASS-user] v.generalize / reanimation of dead lines ?

Hi, when trying to derive a continous coast_line_ from the GSHHS data set. For this, the data was reduced using v.generalize (douglas, threshold=0.001). Since the reduced coastline consists of several lines (with individual categories), I tried v.build to snap them together into a (hopefully)

[GRASS-user] v.dissolve bugfeature / workaround needed

Hello list, i am using GRASS 6.4svn to merge adjacent poylgons into larger units. The merging is controlled by a column of type CHAR: v.dissolve input=counties output=counties_merged_fips1 column=FIPS_1 results in dbmi: Protocol error ERROR: Cannot open select cursor: SELECT cat, FIPS_1 FROM

[GRASS-user] Vector Topology: how to get a line from a boundary

Hi, here is a vector topology related issue: After merging a base layer of adjacent polygons (all the counties of an island) into one polygon (the island's polygon) I am riddled by two issues: 1) How to get just the outline of the island ? Both v.type and v.extract with type=boundary,line

[GRASS-user] Shape lines to GRASS area (boundary + centroid), 101

Hi, I am stuck with the olde issue about to create both vector boundaries and vector centroids out of a shape file consisting of lines. The lines have been imported (v.in.ogr), cleaned (v.clean) and v.type was used to produce boundaries v.type input=shapefile output=foo type=line,boundary.

[GRASS-user] martian anaglyphs

Hello Carlos, sorry for responding so late. Due to popular demand (that's you and Markus Neteler) there's now a howto about NVIZ anaglyphs in the Wiki: http://grass.gdf-hannover.de/wiki/Stereo_anaglyphs#Step_by_step If I understand correctly, Paraview is capable to render anaglyphs on the