I have also imported the road network layer from the Mumbai Freemap and here is the WMS URL:
http://mumbai.freemap.in/wms.cgi?srs=epsg:4326&format=image/png&request=GetMap&service=WMS&version=1.1.1&layers=road_net_line_4326 Good for comparing to AND's road network. ;-) S.K. 2008/7/6 Shekhar Krishnan <[EMAIL PROTECTED]>: > I spent today attempting to grapple with these issues, with some success. > We've reprojected the WMS into wgs84 (EPSG:4326) from UTM 43N (EPSG:32643) > by reprojecting the shape files using ogr2ogr. This fixed the WMS problem, > and I have succesfully loaded these URLs for different layers from the > Mumbai Freemap in JOSM: > > Buildings (Polygons) > > http://mumbai.freemap.in/wms.cgi?srs=epsg:4326&format=image/jpeg&request=GetMap&service=WMS&version=1.1.1&layers=building_polygon_4326 > > Building Outlines (Lines) > > http://mumbai.freemap.in/wms.cgi?srs=epsg:4326&format=image/jpeg&request=GetMap&service=WMS&version=1.1.1&layers=building_line_4326 > > Municipal Land Use Reservations (Polygons) > > http://mumbai.freemap.in/wms.cgi?srs=epsg:4326&format=image/jpeg&request=GetMap&service=WMS&version=1.1.1&layers=reserved_polygon_4326 > > There are several other layers in http://mumbai.freemap.in that are not > here yet, and I will work on grouping and styling them so there is only one > for buildings and another for road and rail networks and send around new > links. A quick glance at the results in OSM shows that as reported, with the > AND data on OSM right now, everything has been moved east and north, though > this is not consistent and in Central Mumbai the offset seems to becomes > less. > > This raises the question of what to do generally about Mumbai in OSM. While > a WMS overlay looks nice and can be traced by volunteers with a great deal > of time and effort, I am more interested in directly loading these shape > files into JOSM and supplementing or replacing the AND data with our Mumbai > Freemap layers. I am happy to share these shape files with anyone in the OSM > community who might be able to lend a hand using osmlib, ruby-shapefile, > gml2osm, or any other method. > > A correction to Mikel: the third dataset which you mentioned we have from > the Govt of Maharashtra PWD is not of Mumbai, but of the rest of the state, > and contains the entire road network, all village names and maps, and > district boundaries for Maharashtra. These are also shape files with their > own pecularities. > > I've had issues both with JSOM and the WMS plugin which I'll also note > here. I'm a newcomer to both, so any help is appreciated. Downloading data > for Mumbai from OSM and from local OSM instances such as > http://demo.binyasit.com:3000/ almost always returns only a snippet of the > area which I select from the permalink. I'm not sure why, sometimes I get > the fulll boundaries of Greater Mumbai and then a handful of nodes. > > Also, the WMS plugin is not very good at saving changes made to new > entries, which often revert to the previous saved entry after restarting > JSOM. This has made it difficult to keep track of which WMS URL is being > called as the menu is not refreshed after saving a URL and restarting JSOM. > The other issue, which Chippy raised, is the lack of UTM support in the WMS > plugin which should be addressed as we would rather use our UTM projection > fof maximum accuracy. > > Thanks for the help and support! > > Best, > > > Shekhar > > 2008/7/6 Tim Waters (chippy) <[EMAIL PROTECTED]>: > > UTM which EPS:32643 appears to be, could be implemented within the >> wmsplugin. >> >> The WMSplugin uses some classes from jcoord, to convert from OSGB >> (what the NPE wms server uses) to wgs84. (OSGB is itself Transverse >> Mercator too) >> >> Looking at the jcoord package, it also has classes to convert from UTM >> zones also : >> http://www.jstott.me.uk/jcoord/api/1.1-b/uk/me/jstott/jcoord/UTMRef.html >> So I'd think the wmsplugin could be hacked to get it working >> reasonably easily. >> >> Regards, >> >> Tim >> >> _______________________________________________ >> talk mailing list >> talk@openstreetmap.org >> http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/talk >> > > > > -- > > Shekhar Krishnan > 9 Supriya, 2nd Floor > Plot 709, Parsee Colony Road no.4 > Dadar, Mumbai 400014 > India > > http://web.mit.edu/shekhar > http://heptanesia.net > http://bombayology.net > -- Shekhar Krishnan 9 Supriya, 2nd Floor Plot 709, Parsee Colony Road no.4 Dadar, Mumbai 400014 India http://web.mit.edu/shekhar http://heptanesia.net http://bombayology.net
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