thanks it helped a lot. Although it does not cover complete area. I am attaching Geo Package file here GHS_STAT_UCDB2015MT_GLOBE_R2019A.zip <https://drive.google.com/file/d/1qgyBht3KOBA593uFHe2fcSTOX5z7R36c/view?usp=drive_web>
On Thu, Oct 15, 2020 at 8:52 PM Siddhant N <lifefi...@gmail.com> wrote: > Have you seen GHSL? https://ghsl.jrc.ec.europa.eu/data.php > They have a robust methodology for UA identification across the globe inc > India. Their India UA data is not perfect but beats most other public > datasets. > > On Wednesday, 14 October 2020 at 19:47:27 UTC+5:30 Aditya Medury wrote: > >> Hi, >> >> I am trying make sense of how to translate the definitions of urban >> agglomerations/million-plus cities in the 2011 census. Census defines urban >> agglomeration as follows: >> >> *An urban agglomeration is a continuous urban spread constituting a town >> and its adjoining outgrowths (OGs), or two or more physically contiguous >> towns together with or without outgrowths of such towns. An Urban >> Agglomeration must consist of at least a statutory town and its total >> population (i.e. all the constituents put together) should not be less than >> 20,000 as per the 2001 Census. In varying local conditions, there were >> similar other combinations which have been treated as urban agglomerations >> satisfying the basic condition of contiguity. Examples: Greater Mumbai UA, >> Delhi UA, etc.* >> *Source: * >> https://censusindia.gov.in/2011-prov-results/paper2/data_files/India2/1.%20Data%20Highlight.pdf >> >> Since they can be a combination of multiple towns/cities, outgrowths, >> municipal corporations, identifying their sociodemographic and built >> environment characteristics from other databases becomes a little >> challenging. For instance, the breakdown of all UAs with more than 1 lakh >> population is specified here: >> >> https://censusindia.gov.in/2011-prov-results/paper2/data_files/India2/Table_4_PR_UAs_1Lakh_and_Above_Appendix.pdf >> >> I can think of a few different ways in which I may be able to approximate >> some boundaries associated with these UAs: >> >> - I could use the ADM3 shapefiles of sub-districts ( >> https://earthworks.stanford.edu/catalog/stanford-rj389fh4679) and >> picking locations based on visual inspections/overlap of city points. I >> understand that municipal boundaries may or may not always match the >> administrative divisions (not very clear on this) >> - I could also base it off of pincode layers ( >> https://github.com/justinelliotmeyers/INDIA_PINCODES) which might be >> more fine-grained if I need additional flexibility in selecting small >> regions at the periphery. >> - I could go the population grid route and do some clustering to find >> regions that might approximate the UA populations provided in the 2011 >> census for some of the bigger cities. But this would get really crude with >> no unique boundary solutions. >> >> Wondering if people have any thoughts on this. >> >> Thanks! >> >> Aditya >> > -- > 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 datameet+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/datameet/31c8b0d0-0bbf-4f5b-ba12-5e934e7b7d84n%40googlegroups.com > <https://groups.google.com/d/msgid/datameet/31c8b0d0-0bbf-4f5b-ba12-5e934e7b7d84n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- 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 datameet+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/datameet/CA%2B4SsQBqFeu4FsMD_kKS4GCe5rgO-RGX%2Bg%2B6F7ZDwmLbu-tmDg%40mail.gmail.com.
