Let me add that I got through to EC as well... the in charge of the EC's GIS related IT work, and he put me through to their software vendor.. who put me through to ... a blank wall...
On Sat, Apr 20, 2013 at 3:29 PM, Shashank <[email protected]>wrote: > To close down one line of enquiry, I believe that georeferencing and > vectorising the PDF maps from the NIC GIS server is pointless. > > I've attached my quick-and-dirty attempt here, and have overlaid the > (pre-delimitation) EC assembly constituency shapefile that was dumped on > datameet earlier. > > At both the georeferencing and vectorisation steps, there's a substantial > loss of accuracy; at the georeferencing stage because the PDF map and the > earlier EC data don't match up properly (there are kinks in one boundary > that aren't duplicated in the other) and at the vectorisation stage the > actual boundaries in the PDF are very thick, so they could be anywhere > within a few tens of kilometres of their actual position. In the case of > Bangalore city particularly, this image is unusable. > > Other potential sources I've tried accessing, only to discover that they > also do not have access to up-to-date AC/PC shapefiles, are the Harvard > Geospatial Library and CPR. > > I'd suggest that the only way of getting a useable version of the data is > to get the EC to re-release it, ideally under the auspices of the National > Data Portal. This is obviously easier said than done. > > > On Wednesday, April 17, 2013 7:01:48 PM UTC+5:30, Sajjad Anwar wrote: > >> I gave a quick and dirty shot and see the result in the attached image. >> It's useless. The image is somehow getting flipped when I polygonize. >> The image is partly useless because of the terrible resolution and >> colours. >> >> I'll take some time out and get to it. Will keep you guys posted if >> something good happens. >> >> Cheers, >> Sajjad. >> >> On Wed, Apr 17, 2013 at 3:18 PM, Karthik Shashidhar >> <[email protected]> wrote: >> > Reviving this thread. >> > >> > So the maps themselves are available at >> > http://gisserver1.nic.in/**ecimaps <http://gisserver1.nic.in/ecimaps> >> > >> > More specifically the Karnataka Assembly constituency map (pertinent >> given >> > the upcoming elections) is available at: >> > http://gisserver1.nic.in/**ecimaps/ECIPDF/State_ac_map/**KARNATAKA.pdf<http://gisserver1.nic.in/ecimaps/ECIPDF/State_ac_map/KARNATAKA.pdf> >> > >> > I think this is a vectorized PDF, so should be able to be converted to >> shape >> > files. >> > >> > And I assume there is enough expertise on this list to do this >> conversion. >> > Can someone do the necessary conversions and post the data? >> > >> > Thanks >> > Karthik >> > >> > >> > On Wednesday, 28 November 2012 12:19:56 UTC+5:30, megha wrote: >> >> >> >> Hi everyone, >> >> >> >> Can anyone here point me to recent enough shape files for MP/MLA >> >> constituencies? >> >> >> >> Thanks, >> >> Megha >> > >> > -- >> > For more details about this list >> > http://datameet.org/**discussions/ <http://datameet.org/discussions/> >> > --- >> > You received this message because you are subscribed to the Google >> Groups >> > "datameet" group. >> > To unsubscribe from this group and stop receiving emails from it, send >> an >> > email to datameet+u...@**googlegroups.com. >> > For more options, visit >> > https://groups.google.com/**groups/opt_out<https://groups.google.com/groups/opt_out>. >> >> > >> > >> >> >> >> -- >> Sajjad Anwar | W: http://sajjad.in | T: @geohacker >> > -- > For more details about this list > http://datameet.org/discussions/ > --- > You received this message because you are subscribed to the Google Groups > "datameet" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/groups/opt_out. > > > -- Best Regards, Srinivasan V. Ramani , Senior Assistant Editor, Economic and Political Weekly , New Delhi: 110 067 09650855669 -- For more details about this list http://datameet.org/discussions/ --- You received this message because you are subscribed to the Google Groups "datameet" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
