[Talk-in] Mumbai

Shekhar Krishnan shekhar at crit.org.in
Sun Mar 8 20:05:48 GMT 2009

As I've said on the list before, the Mumbai data is very inaccurate. The 
demo which we built at http://mumbai.freemap.in is now more than three 
years old (see below for the old WMS URLs which you can load in JOSM to 
view and trace as layers for OSM).

I have spent the past several months cleaning up and georeferencing the 
datasets which comprise the Mumbai Freemap to extract layers with proper 
boundaries and labels. See this example:


After a fair amount of working transforming line tracings into polygon 
features using Grass and ArcGIS, I now have complete layers for plots, 
buildings, and areas reserved under the municipal development plan. I am 
working on creating center lines for roads, railways and highways from 
the outlines I have.

I want to contribute these to OSM to eventually replace the existing 
coverage. We have more than 600,000 buildings in the geodatabase, and 
more than 100,000 planned areas like playgrounds, schools, parks, 
housing, industry, etc.

We will also soon have complete district, village and municipal coverage 
for Vasai-Virar and Maharashtra. I am happy to share these shapefiles 
with anyone who is ready to help me develop shp2osm tools. Arindam and I 
have collected some links here:




WMS URLs (use in QGIS or JOSM)

Road Network (Lines)

Buildings (Polygons)

Building Outlines (Lines)

Municipal Reserved Areas (Polygons)

Like I've said on the list before, I'm waiting for someone to help with 
converting these shapefiles into OSM.

Kiran Jonnalagadda wrote:
> On Sat, Feb 28, 2009 at 8:38 PM, PlaneMad <thePlaneMad at gmail.com 
> <mailto:thePlaneMad at gmail.com>> wrote:
>     i beleive the mumbai freemap.in <http://freemap.in> data is being
>     imported into osm. dont know what is the status of that is though.
> The Mumbai Freemap data is sadly an outline of plots, not roads. It 
> cannot be used unless someone traces over all the "gaps" in their data 
> -- since the gaps represent the roads.
> Shekhar, do let us know if this has changed.
> -- 
> Kiran Jonnalagadda
> http://jace.seacrow.com/
> ------------------------------------------------------------------------
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Shekhar Krishnan
MIT E51-185
77, Massachusetts Avenue
Cambridge, MA 02139

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