<div>I just checked out the area, and it is littered with untagged nodes (<a href="http://www.openstreetmap.org/browse/changeset/4362880">43,000?</a>), like you said, the building geomentry is broken and there are no segments connecting the nodes :( <br>
</div><div><br></div><div>Regarding using the mumbai freemap as a base, i have still not been able to access the map till date <a href="http://mumbai.freemap.in/">http://mumbai.freemap.in/</a> i can only see a bunch of points, and even that breaks when zoomed in. Does the dataset contain streetnames?</div>
<br><div class="gmail_quote">On Sun, Apr 11, 2010 at 7:26 PM, Shekhar Krishnan <span dir="ltr"><<a href="mailto:shekhar@mit.edu">shekhar@mit.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
Yesterday I uploaded a set of buildings for the Colaba-Cuffe Parade area of South Mumbai based on the datasets which our group CRIT created through our Mumbai Freemap project several years ago. Our shape files were converted to OSM using polyshp2osm.py and tagged and uploaded via JOSM. One can now see a sprinkling of new buildings here:<br>
<a href="http://www.openstreetmap.org/?lat=18.91115&lon=72.81534&zoom=15" target="_blank">http://www.openstreetmap.org/?lat=18.91115&lon=72.81534&zoom=15</a><br>
<br>
Editing these files in JOSM is *very* slow and difficult, as is uploading via JOSM or using the batchupload py scripts. For each shape file we have for all of Greater Mumbai, the shp2osm conversion yields 40-50 osm files which must be uploaded individually. After trying just one file, less than half of the total buildings are being rendered by Mapnik, perhaps because their geometries are broken.<br>
<br>
But the process works, and with more time and effort could result in a major contribution to OSM which I've wanted to do for years now. The AND data for Mumbai is both generally skewed and is very inaccurate in some places (and fixed in others, thanks to volunteers). And it is mostly just major roads. I agree with Arun and Kenneth that it is perhaps easier to start afresh. Another option is to use our datasets as a base from which to start, via shp2osm conversion of our layers.<br>
<br>
Our freemap dataset contain layers for buildings, roads, and other public and reserved plots, with further work on conversion/import and mapping attributes to tags we could make a significant contribution to an entirely new OSM Mumbai either through direct upload or conflation with the existing coverage from AND and volunteers.<br>
<br>
Best,<br>
<br>
<br>
Shekhar<br>
<br>
PlaneMad wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
On Thu, Mar 18, 2010 at 12:27 PM, PlaneMad <<a href="mailto:thePlaneMad@gmail.com" target="_blank">thePlaneMad@gmail.com</a> <mailto:<a href="mailto:thePlaneMad@gmail.com" target="_blank">thePlaneMad@gmail.com</a>>> wrote:<br>
<br>
From my experience fixing Mumbai, i have come to realize that its<br>
pretty much impossible to realign the streets in parts without<br>
confusing yourself. I had started deleting unnamed AND ways to make<br>
the task easier, but that didnt help too much as you lose the<br>
reference street geometry to match with the yahoo imagery.<br>
<br>
I feel the best way to fix the map is to remove all the AND paths<br>
completely, start tracing the roads and name them by using an old<br>
extract of the original AND import as reference. Good idea?<br>
-- <a href="http://j.mp/ArunGanesh" target="_blank">http://j.mp/ArunGanesh</a><br>
<br>
<br>
Btw, i will be in Mumbai to attend India HCI at IIT powai from 20-24. If anybody else is attending, we could try to work something out with the IIT students.<br>
<br>
-- <br>
<a href="http://j.mp/ArunGanesh" target="_blank">http://j.mp/ArunGanesh</a><br>
<br>
<br>
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</blockquote>
</blockquote></div><br><br clear="all"><br>-- <br><a href="http://j.mp/ArunGanesh">http://j.mp/ArunGanesh</a><br>