Looks like I missed the activity on this post. The best source for this dataset is the data collected and released by Justin Mayers in August Last year: https://groups.google.com/d/msg/datameet/GJKMXXSB-Ns/fS7HM_xzM3EJ
@Nisha, Should I write a summary post on this as you had suggested? Regards, Dev On Tuesday, April 14, 2015 at 10:33:16 AM UTC+5:30, Shashank wrote: > > Bumping this up, because I don't think this issue has been resolved yet. I > now have 4 different versions of Indian administrative boundaries, and my > current nightmare is getting protected area boundaries to line up with them > accurately. > > What's the best *open* version of Indian administrative boundaries, down > to the Tehsil/Block level, and is there a place from where it is easily > available? > > (I'm not even going to ask for village-level data, because among other > things, what we're doing now is digitising revenue village maps because the > MRD itself doesn't have digitised village level data...yet.) > > > On Tuesday, January 27, 2015 at 2:02:37 PM UTC+5:30, D Thakker wrote: >> >> Eric, in my research / experience i have found that Sub-district, Mandal, >> Taluka, Tehsil means same and are division of District when it comes to >> Census. >> But for Revenue dept boundaries are drawn and managed by district >> administrative bodies who report to state administration only. >> >> So for census - District and Sub-district are well defined boundaries, >> and I understand from 2011 Census India has bought a started numbering >> system which should make future data reconciliation easier >> >> But for land revenue depaetment - it really depends on the local >> administrative reach and function, and is managed and controlled by state >> admin bodies. >> >> For eg. Surat has some discrepancy when it comes to Revenue and Census >> boundaries. This was something I came across and even local admin bodies in >> Surat were not aware >> >> >> On Thursday, August 7, 2014 at 8:15:45 PM UTC+5:30, Eric Dodge wrote: >>> >>> This is very interesting Sharad. >>> >>> I've been looking for maps of what I've been calling administrative >>> blocks, that is, the units overseen by block development officers. MGNREGA >>> data is aggregated at this level and I've been hoping to use the data to do >>> some mapping exercises. >>> >>> The census sub-districts are called differently across states (tahsil, >>> taluk, mandal, etc). You can see the list here: >>> >>> >>> http://censusindia.gov.in/Tables_Published/Admin_Units/Admin_links/subdistrict_nomeclature.html >>> >>> I know that in all the states where census sub-districts are called >>> taluk, mandal, or CD block (with the exception of TN), the census >>> sub-district is identical to the administrative block. >>> >>> I've already completed a mapping exercise for Bihar using the census >>> sub-district map and the data matched up pretty well. If the IND_adm3 data >>> is indeed the administrative blocks then I could do a similar exercise with >>> Madhya Pradesh. I'll take a look to see if the data lines up correctly. >>> >>> Has anybody dug into this issue any deeper? I've heard that tehsil comes >>> from the revenue side whereas taluk, mandal, etc comes from the >>> administrative side but that doesn't explain why the census uses different >>> sub-district units across states. >>> >>> Best, >>> Eric >>> >>> >>> On Thu, Aug 7, 2014 at 7:39 AM, Sharad Lele <[email protected]> wrote: >>> >>>> If I am right, then Justin may want to rename his layer as >>>> CDBlocks_2001... >>>> >>>> Sharad >>>> >>>> >>>> On Thursday, August 7, 2014 4:28:17 PM UTC+5:30, Sharad Lele wrote: >>>>> >>>>> I think I have the explanation for why I am seeing a good match and >>>>> you are not: >>>>> >>>>> The problem lies in defining what is the 'sub-district' unit (in >>>>> IND_adm3). Administratively speaking, it is tehsil, below which lies CD >>>>> block. Unfortunately, census gives information by CD block. So there are >>>>> more 'sub-district' units in Census than tehsils in the country. GDAM >>>>> seems >>>>> to have followed the tehsil concept. >>>>> >>>>> To check: Karnataka is one state in which tehsil and CD block are one >>>>> and the same. That is why the sub-district layer IND_adm3 matches >>>>> perfectly >>>>> for Karnataka, but not for other states. There might be some other states >>>>> where this holds good, I don't know. >>>>> >>>>> Anyway, so if one really wants CD block level boundaries, we have to >>>>> look at Justin, I guess. >>>>> >>>>> But the GDAM boundaries are not 'wrong'. >>>>> >>>>> Sharad >>>>> >>>>> On 07-Aug-14 9:48 AM, Devdatta Tengshe wrote: >>>>> >>>>> In Continuation of my previous email, here is a CSV file which shows >>>>> just how bad the GDAM dataset is. >>>>> >>>>> Regards, >>>>> Devdatta >>>>> >>>>> >>>>> On Thu, Aug 7, 2014 at 9:06 AM, Devdatta Tengshe <[email protected]> >>>>> wrote: >>>>> >>>>>> Hi Sharad, >>>>>> >>>>>> I just download the GDAM data again, to confirm what you have said. >>>>>> >>>>>> I'm going to have to disagree with you about the quality of the >>>>>> IND_adm3 data. >>>>>> >>>>>> >>>>>> Acoording to the 2001 Census, there are 5454 Sub Districts in India >>>>>> <http://www.socialjustice.nic.in/pdf/tab11.pdf>. The GDAM dataset >>>>>> has just 2299 features. >>>>>> >>>>>> So clearly these taluk features do not correspond to the 2001 Census. >>>>>> I cross checked for some areas I have ground knowledge of, and I can say >>>>>> that this dataset is not from any specific era. Some tehsils in the file >>>>>> were created post 2001, while others created in the 90's were not >>>>>> present. >>>>>> >>>>>> In my opinion the GDAM data is pretty much unusable. >>>>>> >>>>>> >>>>>> Regards, >>>>>> Devdatta >>>>>> >>>>>> >>>>>> On Wed, Aug 6, 2014 at 11:36 PM, Sharad Lele <[email protected]> >>>>>> wrote: >>>>>> >>>>>>> I have downloaded and checked the GADM boundaries (my version is >>>>>>> 2011). The taluka boundary layer probably holds good today, becuase few >>>>>>> talukas get split. Districts get split regularly (every so many years) >>>>>>> so >>>>>>> the district boundary layer in this GADM set is quite of date (may >>>>>>> apply to >>>>>>> 2001 or so). The spatial registration (positional accuracy is ~1km, and >>>>>>> the >>>>>>> spatial detail is of course not as good as the boundaries given in a >>>>>>> Survey >>>>>>> of India 50k topo, but then that is an unfair standard, so by a more >>>>>>> generalized standard, the quality is okay. >>>>>>> >>>>>>> Sharad >>>>>>> >>>>>>> >>>>>>> On Monday, August 4, 2014 7:20:38 PM UTC+5:30, Dilip Damle wrote: >>>>>>>> >>>>>>>> Mr Thakkar, >>>>>>>> >>>>>>>> Please also look at another post (more than one) on this group >>>>>>>> about Taluk Shapefiles by Justin Meyers >>>>>>>> >>>>>>>> So far as I know GADM is the source that has Taluk files. >>>>>>>> I am not sure about its completeness and accuracy as on today >>>>>>>> >>>>>>>> http://www.gadm.org/ >>>>>>>> >>>>>>>> On Monday, August 4, 2014 6:23:07 PM UTC+5:30, D Thakker wrote: >>>>>>>>> >>>>>>>>> thanks Dilip for your hardwork. >>>>>>>>> I have been on a lookout for all taluka / tehsil shape file, so >>>>>>>>> how do I be in a loop as I am very keen to see the repository mail / >>>>>>>>> list. >>>>>>>>> >>>>>>>>> >>>>>>>>> On Monday, August 4, 2014 9:50:26 AM UTC+5:30, Dilip Damle wrote: >>>>>>>>> >>>>>>>>>> Sharad, >>>>>>>>>> >>>>>>>>>> I am working on some things will revert in about a week or may be >>>>>>>>>> more. >>>>>>>>>> >>>>>>>>>> Thejesh, >>>>>>>>>> >>>>>>>>>> Go ahead, >>>>>>>>>> >>>>>>>>>> Actually there was one more source a Low Resolution (vertices) >>>>>>>>>> District map by VDS technologies. >>>>>>>>>> I have it as Polylines in Autocad. I seem to have lost the >>>>>>>>>> original file. >>>>>>>>>> If anyone has then please share it. (it does not seem to be on >>>>>>>>>> their site now) >>>>>>>>>> >>>>>>>>>> On Sunday, August 3, 2014 11:32:43 PM UTC+5:30, Thejesh GN wrote: >>>>>>>>>>> >>>>>>>>>>> Actually its not a bad idea to list it on the wiki. Let me know >>>>>>>>>>> i will create an account. >>>>>>>>>>> >>>>>>>>>>> -- >>>>>>>>>>> Thejesh GN ⏚ ತೇಜೇಶ್ ಜಿ.ಎನ್ >>>>>>>>>>> http://thejeshgn.com >>>>>>>>>>> GPG ID : 0xBFFC8DD3C06DD6B0 >>>>>>>>>>> On Aug 3, 2014 10:15 PM, "Sharad Lele" <[email protected]> >>>>>>>>>>> wrote: >>>>>>>>>>> >>>>>>>>>>>> Dear Dilip and others: >>>>>>>>>>>> >>>>>>>>>>>> I have been following this thread with interest, but to be >>>>>>>>>>>> honest am a bit lost now. Can someone post a summary of which maps >>>>>>>>>>>> mentioned so far have what features (which coverage, pertaining to >>>>>>>>>>>> which >>>>>>>>>>>> year, what attributes (such as census codes), etc.)? Would be most >>>>>>>>>>>> helpful. >>>>>>>>>>>> >>>>>>>>>>>> Sharad >>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> On Friday, August 1, 2014 9:03:58 PM UTC+5:30, Dilip Damle >>>>>>>>>>>> wrote: >>>>>>>>>>>>> >>>>>>>>>>>>> Hello, >>>>>>>>>>>>> >>>>>>>>>>>>> This is an old post. >>>>>>>>>>>>> However this is the appropriate place to add an additional >>>>>>>>>>>>> source. >>>>>>>>>>>>> >>>>>>>>>>>>> I had downloaded the set from Grid Geneva many years ago. >>>>>>>>>>>>> The original complete source was named as GNV197 which is 24 MB >>>>>>>>>>>>> Titled as "HUMAN POPULATION AND ADMINISTRATIVE BOUNDARIES >>>>>>>>>>>>> DATABASE FOR ASIA" >>>>>>>>>>>>> I am attaching the South Central Asia E00 file. >>>>>>>>>>>>> >>>>>>>>>>>>> That set contains The disputed areas under the country name >>>>>>>>>>>>> IN1 and IN2 >>>>>>>>>>>>> >>>>>>>>>>>>> This dataset can not be easily found at present on the GRID >>>>>>>>>>>>> Geneva site http://www.grid.unep.ch/index.php?lang=en in the >>>>>>>>>>>>> same name. >>>>>>>>>>>>> may be it is still there somewhere with some other name. >>>>>>>>>>>>> >>>>>>>>>>>>> For copyright check the metadata file which is here >>>>>>>>>>>>> >>>>>>>>>>>>> http://geonetwork.grid.unep.ch/geonetwork/srv/en/iso19139. >>>>>>>>>>>>> xml?id=835 >>>>>>>>>>>>> >>>>>>>>>>>>> rgds >>>>>>>>>>>>> Dilip Damle >>>>>>>>>>>>> >>>>>>>>>>>>> On Wednesday, January 4, 2012 9:52:57 AM UTC+5:30, Karthik >>>>>>>>>>>>> Shashidhar wrote: >>>>>>>>>>>>>> >>>>>>>>>>>>>> All the shapefiles for India that I have downloaded do not >>>>>>>>>>>>>> show PoK and Aksai Chin as part of India. Does anyone here have >>>>>>>>>>>>>> access to >>>>>>>>>>>>>> shapefiles that include these territories? Basically looking to >>>>>>>>>>>>>> publish >>>>>>>>>>>>>> (online) some maps, so want to make sure that it's accurate. >>>>>>>>>>>>>> >>>>>>>>>>>>>> (I looked through the group archives, and all sources >>>>>>>>>>>>>> mentioned there do not show these regions as part of India) >>>>>>>>>>>>>> >>>>>>>>>>>>>> Thanks >>>>>>>>>>>>>> Karthik >>>>>>>>>>>>>> >>>>>>>>>>>>> -- >>>>>>>>>>>> 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. >>>>>>> >>>>>> >>>>>> >>>>> -- >>>>> 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 a topic in the >>>>> Google Groups "datameet" group. >>>>> To unsubscribe from this topic, visit https://groups.google.com/d/ >>>>> topic/datameet/X5kzViRMJKs/unsubscribe. >>>>> To unsubscribe from this group and all its topics, send an email to >>>>> [email protected]. >>>>> For more options, visit https://groups.google.com/d/optout. >>>>> >>>>> >>>>> -- >>>>> Democratizing Forest Governance in India >>>>> (In press with Oxford University Press India) >>>>> >>>>> -- >>>> Datameet is a community of Data Science enthusiasts in India. 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