Hi Everyone, Really great stuff here. Thanks for hard-work and all resources. I am currently working on few test projects [self initiated] on Geo-Visualization [Myself work in Reserve bank of India, DSIM (Statistics Dept)]. I'm using https://github.com/datameet/maps/tree/master/Districts [2011 census]. Thanks a lot again for such a effort.
Regarding PIN database I was currently searching for PIN to Geo -Location [either a point corresponding to post officer corresponding to the PIN or a region covered by the PIN] mapping. I have some resources but all of these are incomplete. So I was trying out Google Map's Geo coding. kindly let me know if anyone are having that information already. On Monday, 4 May 2015 23:00:01 UTC+5:30, D Thakker wrote: > > thanks Neha, and Dev - any input on the wiki page will be appreciated. > > Group, > As I had mentioned in my last email / post.. I am trying to build and is > currently in alpha stage and is hosted on www.remaze.in - happy to share > more information if you send me an email. > I tried working on the platform but without relevant base maps its getting > tricky to execute. > > *| Dipal Thakker* > > > On 4 May 2015 at 18:42, Nisha Thompson <[email protected] <javascript:>> > wrote: > >> @Dev >> >> Please please please write a blogpost. I'm having a hard time following >> myself! It would be a really valuable resource. We can also make teh wiki >> a bit more robust.. >> >> http://datameet.org/wiki/indiangeospatialdata >> >> Nisha >> >> On Sat, May 2, 2015 at 11:42 AM, Dipal Thakker <[email protected] >> <javascript:>> wrote: >> >>> Hello Group, Was very keen to continue this discussion. >>> To continue from my last point (in my last msg), the key reason I am >>> seeking base-map / boundary data is that I would like to build an >>> infographic portal for census and other primary data sets. I gave a shot >>> but did not reach too far.. and keen to collaborate with like minded ppl to >>> take my project further. >>> >>> Best, >>> Dipal >>> >>> *| Dipal Thakker* >>> >>> >>> On 19 April 2015 at 15:50, Dipal Thakker <[email protected] >>> <javascript:>> wrote: >>> >>>> @Pradeep thanks for flagging >>>> >>>> @All - Just bought to my attention that my msg from Thursday last week >>>> which was intended for the group was only sent to one member. >>>> >>>> ---- >>>> >>>> @Mahroof - thats very true. But the sad part is that BISAG has formal / >>>> informal tie-ups with commercial entities (so I have heard) >>>> >>>> @Sharad - many thanks, will have a look at the information right away. >>>> Will this match to Census 2011 data? >>>> >>>> @Pradeep - many thanks for your offer to help with RTI - ideally i need >>>> data for India (which I am sure most of us here are after). But for >>>> starters, I am focusing on western region so data for Guj, Raj, Mah, and >>>> MP >>>> will be great. >>>> >>>> All - just a thought – It will be great if DM members could collaborate >>>> to build an open source data platform, as I am sure there is a lot of data >>>> around. >>>> >>>> --- >>>> >>>> Which Brings me to my last point.. I am currently trying to build a >>>> retail analytics platform and as part of my exercise I am also building a >>>> census infographic tool for which I need two key components.. >>>> - primary census data which can be extrapolated (thisI have and is now >>>> available for free) and >>>> - relevant and relateable boundary / admin line data (not available). >>>> >>>> I have done some very basic work using census raw data layered on OSM >>>> using leaflet and driven by PHP / Posgresql >>>> >>>> Keen to talk with like minded people here.. so please feel free to >>>> reach out. >>>> >>>> KR, >>>> Dipal >>>> >>>> *| Dipal Thakker* >>>> >>>> >>>> >>>> On 19 April 2015 at 09:12, Pradeep Bhatt <[email protected] >>>> <javascript:>> wrote: >>>> >>>>> Just noticed that you had sent this mail to me and not to the group. >>>>> You might want to send it to the group. >>>>> >>>>> Regards, >>>>> Pradeep >>>>> >>>>> On Tue, Apr 14, 2015 at 1:38 PM, Dipal Thakker <[email protected] >>>>> <javascript:>> wrote: >>>>> >>>>>> @Mahroof - thats very true. But the sad part is that BISAG has formal >>>>>> / informal tie-ups with commercial entities (so I have heard) >>>>>> >>>>>> @Sharad - many thanks, will have a look at the information right >>>>>> away. Will this match to Census 2011 data? >>>>>> >>>>>> @Pradeep - many thanks for your offer to help with RTI - ideally i >>>>>> need data for India (which I am sure most of us here are after). But for >>>>>> starters, I am focusing on western region so data for Guj, Raj, Mah, and >>>>>> MP >>>>>> will be great. >>>>>> >>>>>> All - just a thought – It will be great if DM members could >>>>>> collaborate to build an open source data platform, as I am sure there is >>>>>> a >>>>>> lot of data around. >>>>>> >>>>>> KR, >>>>>> Dipal >>>>>> >>>>>> *| Dipal Thakker* >>>>>> >>>>>> >>>>>> On 14 April 2015 at 12:00, Pradeep Bhatt <[email protected] >>>>>> <javascript:>> wrote: >>>>>> >>>>>>> Hi Dipal, >>>>>>> >>>>>>> I can use RTI to get data from BISAG. >>>>>>> >>>>>>> Can you let me know you need data exactly for which region? >>>>>>> >>>>>>> Regards, >>>>>>> Pradeep >>>>>>> >>>>>>> >>>>>>> On Tue, Apr 14, 2015 at 11:10 AM, Dipal Thakker <[email protected] >>>>>>> <javascript:>> wrote: >>>>>>> >>>>>>>> Shashank, Shashank, and DM comrades >>>>>>>> >>>>>>>> Great if someone can point me to the most complete / recent version >>>>>>>> of IND_adm3 data. I am working on a census tool and I have done some >>>>>>>> work >>>>>>>> for few states, but stuck without detailed boundary data-sets. >>>>>>>> >>>>>>>> I visited BISAG, a nodal agency in Gujarat which I am told has the >>>>>>>> most detailed GIS data sets for Gujarat and most parts of India, but >>>>>>>> was >>>>>>>> booted out on my request to access, lease, license, or rent data set.. >>>>>>>> its >>>>>>>> such a shame that on one hand PM/govt is talking about open data and >>>>>>>> on >>>>>>>> other there is a thick bureaucratic red tape. >>>>>>>> >>>>>>>> Cheers >>>>>>>> >>>>>>>> *| Dipal Thakker* >>>>>>>> >>>>>>>> On 14 April 2015 at 10:41, "Sharad Lele [शरच्चंद्र लेले]" < >>>>>>>> [email protected] <javascript:>> wrote: >>>>>>>> >>>>>>>>> Dear Shashank: >>>>>>>>> >>>>>>>>> I think the bottom line of the thread below was the the IND_adm3 >>>>>>>>> layer is a reasonably good layer for tehsil boundaries. >>>>>>>>> >>>>>>>>> Regarding digitizing village boundaries: seems like we are all >>>>>>>>> condemned to reinvent the wheel because GoI/Planning Commission/ISRO >>>>>>>>> are >>>>>>>>> not willing to share what they have already done (and in many cases >>>>>>>>> 10 >>>>>>>>> times over). >>>>>>>>> >>>>>>>>> For which state are you trying to create a village boundary layer? >>>>>>>>> >>>>>>>>> Sharad >>>>>>>>> >>>>>>>>> >>>>>>>>> On 14-Apr-15 10:33 AM, 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 >>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>> -- Datameet is a community of Data Science enthusiasts in India. 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