[Talk-in] Districts of India according to Census 2001/2011

Naveen Francis naveenpf at gmail.com
Thu Jan 28 12:18:03 UTC 2021


Hello Ashim,

I wish we had opendata of maps from the census department .
we update the district boundary over a period of time.
Till 2018, we had only 590 district boundary maps in OSM.
The approach you have mentioned would not work since it is not updated at
Jan 2001 or Jan 2011.

Thanks,
naveenpf

On Tue, 26 Jan 2021 at 12:34, Ashim Kapoor <ashimkapoor at gmail.com> wrote:

> Dear Naveen,
>
> On Tue, Jan 26, 2021 at 7:50 AM Naveen Francis <naveenpf at gmail.com> wrote:
> >
> > Hello Ashim,
> >
> > OSM keeps the latest district maps.
> > 2001/2011 maps are available @
> https://github.com/datameet/maps/tree/master/Districts
> >
>
> Can I not use this to extract old data from OSM using diff:-
>
>
> https://wiki.openstreetmap.org/wiki/Overpass_API/Overpass_QL#Difference_between_two_dates_.28diff.29
>
> Suppose for the sake of a thought experiment that the 2011 Census maps
> were updated in OSM on January 2011. Can I not :-
>
> 1. Get the map of Districts of Uttar Pradesh ( for instance) for 2001.
> 2. Get the diff of the map of districts of UP for the dates Jan 2011
> vs Dec 2010.
>
> Then see how the Districts of UP have changed from 2001 vs 2011. What
> do you think about this ?
>
> Query  :  In which month were the Census 2021 maps of Districts of
> India updated? How can I find this out ?
>
> > Thanks,
> > naveenpf
> >
> > On Sat, 23 Jan 2021 at 11:34, Ashim Kapoor <ashimkapoor at gmail.com>
> wrote:
> >>
> >> Dear all,
> >>
> >> Here is how I  can get the GeoJSON for the latest Districts of India:-
> >>
> >> https://wiki.openstreetmap.org/wiki/Districts_in_India
> >>
> >> For instance for Uttar Pradesh:-
> >>
> >> https://wiki.openstreetmap.org/wiki/Districts_in_Uttar_Pradesh
> >>
> >> There is a link at the bottom of the above page which shows me how to
> extract:-
> >> [out:xml][timeout:500];
> >> {{geocodeArea:Uttar Pradesh}}->.searchArea;
> >> (
>  relation["boundary"="administrative"]["admin_level"="5"](area.searchArea););
> >> out meta;>;out meta qt;
> >>
> >> My query is : How can I get the GeoJSON for say Districts in Uttar
> >> Pradesh according to a previous census year, say 2001 ?
> >>
> >> Many thanks,
> >> Ashim
> >>
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