How does this compare with the maps from the GADM database? My notes say GADM database maps (India state, district and taluka) show district boundaries of 2001 or earlier, with spatial positioning error of about 1km, and much more generalized than the boundaries shown on Survey of India toposheets. (goes without saying since the topos are at much finer scale than such maps)
Sharad On Wednesday, August 6, 2014 10:49:42 AM UTC+5:30, Dilip Damle wrote: > > Justin, Devdatta, > > It's all about how things work in India, > > Devdatta mentioned SWEat,blood and teARS > > It also includes the capitalised word :) > > Good to persevere though. > Congratulatioins. > > Rgds > Dilip Damle > > > > > On Wednesday, August 6, 2014 9:59:13 AM UTC+5:30, Justin Meyers wrote: >> >> >> <https://lh5.googleusercontent.com/-R0Y80NzLfCo/U-GuxQ7iCwI/AAAAAAAAAKA/gdN3wX4skFk/s1600/bihar_sample.jpg> >> see the Bihar data compared to this:Red=Bihar Black=this dataset >> >> >> >> On Wednesday, August 6, 2014 12:21:27 AM UTC-4, Justin Meyers wrote: >>> >>> Devdatta, >>> This is raw data that I converted from kml to shp. So it took me about >>> 30 minutes to make sure the attributes came through properly. Cannot say >>> my source until I download the rest of the content from the site, before >>> they take it down. It seems like they put data on the internet, then try >>> to take it down (or hide it...). Not really sure why? I posted the Orissa >>> sample for you some time ago, but you never responded? I found official >>> data for Orissa as well, so converting the census pdfs to gis is a big >>> waste of time (took me a few days...). >>> >>> As per the quality of this dataset, it is the best I have seen on a >>> national level. But if you look state by state, or really want quality >>> data, then this isn't what you want. I would call this dataset a rough >>> start. >>> >>> I posted a update about Bihar ( >>> https://groups.google.com/forum/#!topic/datameet/QuP4Tt4n0_g) and that >>> data is amazing, this data doesn't hold a candle to it. Too bad the >>> government doesn't want help from the experts ;) >>> >>> Cheers, >>> Justin >>> >>> >>> >>> On Wednesday, August 6, 2014 12:02:57 AM UTC-4, Devdatta Tengshe wrote: >>>> >>>> Hi Justin, >>>> >>>> Firstly let me congratulate you on doing this. I'm sure that this must >>>> have involved a lot of sweat, blood and tears (Working with government >>>> data, usually involves the last one). This is the most up-to-date, >>>> comprehensive & complete dataset for sub districts that I have seen. >>>> >>>> Could you tell us what was the source for creating these boundaries? >>>> >>>> I'll cross check it with other datasets, and let you know how it goes. >>>> >>>> Regards, >>>> Devdatta >>>> >>>> >>>> >>>> On Wed, Aug 6, 2014 at 8:06 AM, Justin Meyers <[email protected]> >>>> wrote: >>>> >>>>> >>>>> <https://lh5.googleusercontent.com/-JCJJdFxwIJ4/U-GSaLtnplI/AAAAAAAAAJw/3nhGoIFzCNE/s1600/indiatahsil2001.jpg> >>>>> >>>>> https://app.box.com/s/vljeiolbqhx2hwyz8qxs >>>>> >>>>> Processed from a kml; did not edit any geometry or attributes. Data >>>>> is pretty generalized, but it is a good start for a national dataset. I >>>>> keep finding better data as I continue to look (already posted two >>>>> previous >>>>> versions of a taluk/ tahsil/ amin 3 boundary). After concerns to missing >>>>> data, this is the best to date I have found. >>>>> >>>>> Cheers! >>>>> Justin >>>>> >>>>> -- >>>>> Datameet is a community of Data Science enthusiasts in India. Know >>>>> more about us by visiting http://datameet.org >>>>> --- >>>>> 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/d/optout. >>>>> >>>> >>>> -- Datameet is a community of Data Science enthusiasts in India. Know more about us by visiting http://datameet.org --- 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/d/optout.
