Re: [datameet] Re: Shapefiles for "complete" India

[Sourav Sarkar]

Thank you very much for uploading this! Really helpful. However, while 
using this shapefile of 2001 subdistricts with the shapefiles of Assembly 
Constituencies from datameet, I notice that the two maps does not overlap 
exactly. I do not have sufficient GIS knowledge to risk correct them. It 
seems that one of the shapefiles is slightly shifted.

On Thursday, August 7, 2014 at 6:51:22 AM UTC-4, Avinash Celestine wrote:
>
> apologies for seeing this thread slightly late
>
> a slightly better source for 2001 data is the shapefiles within the dev 
> info INdia software. I have attached the shapefile i put together from that 
> of individual states and regions. It has about 5468 attributes
>
> http://devinfo.info/devinfoindia/
>
> essentially you download the 'desktop setup' and install. the shapefiles 
> (different one for each district if i remember) get installed to a 
> directory. you can put together the all india file from there.
>
> Avinash
>
>
> On Thu, Aug 7, 2014 at 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 > > 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 
>>> . 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 >> > 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"  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 

Re: [datameet] Re: Shapefiles for "complete" India

[Indranil Gayen]

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  
> 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 > > 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 >> > 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  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  > 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 

Re: [datameet] Re: Shapefiles for complete India

[Dipal Thakker]

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 dipal.thak...@gmail.com 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 bhatt.prad...@gmail.com 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 dipal.thak...@gmail.com
 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 bhatt.prad...@gmail.com
 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 
 dipal.thak...@gmail.com 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] 
 sharad.l...@gmail.com 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 

Re: [datameet] Re: Shapefiles for complete India

[Dipal Thakker]

@Nagarajan - it will be grate if you can share more about your application,
and keen to collaborate too.


*| Dipal Thakker*



On 15 April 2015 at 09:04, Nagarajan M mnagarajan...@gmail.com wrote:

 @Diapl @Ma-roofFully agree. Even i tried the same.

 Now looking at creating a GIS based application with whatever open data
 and shapefiles available for rural development.

 With Best Regards,

 Nagarajan M,  IAS
 District Development Officer
 District Panchayat,Sabarkantha
 Himatnagar - 383 001
 Gujarat
 M : 08000 42 8000



 On Tue, Apr 14, 2015 at 11:48 AM, Sharad Lele [शरच्चंद्र लेले] 
 sharad.l...@gmail.com wrote:

  Dear Dipal:

 http://biogeo.ucdavis.edu/data/gadm2/shp/IND_adm.zip

 This is the link for GADM boundaries for india.

 Sharad


 On 14-Apr-15 11:10 AM, Dipal Thakker 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] 
 sharad.l...@gmail.com 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 shara...@gmail.com
 wrote:

 If I am right, then Justin may want to rename his layer as
 

Re: [datameet] Re: Shapefiles for complete India

[Dipal Thakker]

@Dev - thanks for the link. Will look at the data now. Also anything which
can allow people to collaborate more will be very helpful.. so pls feel
free to share, suggest, advice.


*| Dipal Thakker*


On 17 April 2015 at 14:08, Devdatta Tengshe devda...@tengshe.in wrote:

 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 shara...@gmail.com 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 devd...@tengshe.in
  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 

Re: [datameet] Re: Shapefiles for complete India

[Devdatta Tengshe]

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 shara...@gmail.com 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 devd...@tengshe.in 
 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 

Re: [datameet] Re: Shapefiles for complete India

[Sharad Lele [शरच्चंद्र लेले]]

Dear Dipal:

http://biogeo.ucdavis.edu/data/gadm2/shp/IND_adm.zip

This is the link for GADM boundaries for india.

Sharad

On 14-Apr-15 11:10 AM, Dipal Thakker 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] 
sharad.l...@gmail.com mailto:sharad.l...@gmail.com 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
shara...@gmail.com wrote:

If I am right, then Justin may want to rename his
layer as CDBlocks_2001...

Sharad


On Thursday, August 

Re: [datameet] Re: Shapefiles for complete India

[Ma-roof M]

I have data, hence I am.

Entities like BISAG, I guess, believe in that. Very difficult to get data
out of them. They have also, in an earlier occasion, grapevine says, gone
ahead and thwarted attempts by others at creating some data.


Knowledge, that is *discovered*, lasts a lifetime..

Research Associate, PAS Project
CEPT University, Navrangpura, Ahmedabad, 380009 Gujarat, India
Per | mahroo...@gmail.com |
*www.pas.org.in http://www.pas.org.in/ Mob:* +91 *94 285 10963 *| O: +91
79 26302470 ext: 467
* f * fb.com/pas.cept | * in * linkedin.com/in/pascept


On 14 April 2015 at 11:10, Dipal Thakker dipal.thak...@gmail.com 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] 
 sharad.l...@gmail.com 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 shara...@gmail.com 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 

Re: [datameet] Re: Shapefiles for complete India

[Sharad Lele [शरच्चंद्र लेले]]

Dear Nagarajan:

Since you are part of the Gujarat Government, surely you have access to 
village boundary layers from BISAG or some other source? These layers 
have been created so many times by different govt projects.


Sharad

On 15-Apr-15 9:04 AM, Nagarajan M wrote:

@Diapl @Ma-roofFully agree. Even i tried the same.

Now looking at creating a GIS based application with whatever open 
data and shapefiles available for rural development.


With Best Regards,

Nagarajan M,  IAS
District Development Officer
District Panchayat,Sabarkantha
Himatnagar - 383 001
Gujarat
M : 08000 42 8000



On Tue, Apr 14, 2015 at 11:48 AM, Sharad Lele [शरच्चंद्र लेले] 
sharad.l...@gmail.com mailto:sharad.l...@gmail.com wrote:


Dear Dipal:

http://biogeo.ucdavis.edu/data/gadm2/shp/IND_adm.zip

This is the link for GADM boundaries for india.

Sharad


On 14-Apr-15 11:10 AM, Dipal Thakker 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]
sharad.l...@gmail.com mailto:sharad.l...@gmail.com 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 

Re: [datameet] Re: Shapefiles for complete India

[Khaliq Parkar]

Thanks!
Got some from Eric which should suffice, but I hope the 2011 data comes 
through.

On Saturday, 11 October 2014 11:19:26 UTC+5:30, Sharad Lele wrote:

 Khaliq,

 I guess after Justin's recent email, he should be in the best position to 
 give you the block boundary shapefiles for Bihar.

 Sharad

 On Friday, October 10, 2014 7:20:04 AM UTC+5:30, Khaliq Parkar wrote:

 Hi Eric, 

 I am working in Bihar within Madhubani district. 
 Could you link me to the block level shapefiles? Do you know anyone who 
 has worked at village\panchayat level divisions? 

 Thanks! 
 Khaliq 

 On Thursday, 7 August 2014 20:15:45 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 shara...@gmail.com 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 
 devd...@tengshe.in 
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. 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 
  
  
  
  

  
 

Re: [datameet] Re: Shapefiles for complete India

[Sharad Lele]

Khaliq,

I guess after Justin's recent email, he should be in the best position to 
give you the block boundary shapefiles for Bihar.

Sharad

On Friday, October 10, 2014 7:20:04 AM UTC+5:30, Khaliq Parkar wrote:

 Hi Eric, 

 I am working in Bihar within Madhubani district. 
 Could you link me to the block level shapefiles? Do you know anyone who 
 has worked at village\panchayat level divisions? 

 Thanks! 
 Khaliq 

 On Thursday, 7 August 2014 20:15:45 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 shara...@gmail.com 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 
 devd...@tengshe.in 
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. 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 shara...@gmail.com 
 

Re: [datameet] Re: Shapefiles for complete India

[Khaliq Parkar]

Hi Eric,

I am working in Bihar within Madhubani district.
Could you link me to the block level shapefiles? Do you know anyone who has 
worked at village\panchayat level divisions?

Thanks!
Khaliq

On Thursday, 7 August 2014 20:15:45 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 shara...@gmail.com 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 
 devd...@tengshe.in
   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. 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 shara...@gmail.com
 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 

Re: [datameet] Re: Shapefiles for complete India

[Dilip Damle]

Sharad, 

yes Panchayat is a collection of Villages. 

That sent me to search for data / list of panchayats. 
There are many website for Local Governance most of them do not function 
properly. 

however one of them lgdirectoty.gov.in seems to work and there is s 
downloadable data out there.
well till one goes an hits is head on the captcha thing. 

I tried several browsers but the captcha image is broken.

If anyone can try and find a workaround it will be good.
In the meantime I am trying to send them an email


On Friday, August 8, 2014 6:26:48 PM UTC+5:30, Sharad Lele wrote:

 Dilip, only one kind of 'block', which is CD block (but often just 
 referred to as 'block').

 But to complicate life :-) there can be several other admin  governance 
 levels in between. For instance, in Karnataka, 10-20 villages are grouped 
 into a 'hobli' by the revenue department. (below taluka level). Similarly, 
 several villages (usually less than those in a hobli) are grouped together 
 into a Gram Panchayat. In Maharashtra, gram panchayat and revenue village 
 are I think identical. (Just to remind ourselves: when we say 'village', we 
 mean revenue village--which is what census uses. Not gram panchayat, nor 
 hamlet of any kind).

 Sharad

 On Thursday, August 7, 2014 11:58:14 PM UTC+5:30, Dilip Damle wrote:

 So it seems to be 

 Country  State  Division  District  Tehsil / Taluk  Some Kind of 
  Block  Village 

 Let us first get this ans confirm  if each is subset of the other or 
 there are overlaps and if there is any other item missing in between then 
 let us proceed  




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Re: [datameet] Re: Shapefiles for complete India

[Sharad Lele [शरच्चंद्र लेले]]

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 devda...@tengshe.in 
mailto:devda...@tengshe.in 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
sharad.l...@gmail.com mailto:sharad.l...@gmail.com 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
shara...@gmail.com 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 

Re: [datameet] Re: Shapefiles for complete India

[Sharad Lele]

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 devda...@tengshe.in 
 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 sharad.l...@gmail.com 
 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 shara...@gmail.com 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 

Re: [datameet] Re: Shapefiles for complete India

[Eric Dodge]

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 sharad.l...@gmail.com 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 devda...@tengshe.in
 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 sharad.l...@gmail.com
 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 

Re: [datameet] Re: Shapefiles for complete India

[Sharad Lele [शरच्चंद्र लेले]]

On 07-Aug-14 8:18 PM, Justin Meyers wrote:
As per our conversation yesterday, could you upload your data?  You 
keep criticizing everyone else's data, but you don't share your own!?? 
 Help me help you :)

Dear Justin:

I think you are going too far and too fast. A more moderate tone would 
be appreciated.


1. I never criticized anyone: in fact, i said GDAM was ok, and you were 
the one who used fairly strong words against it.
2. I have only clarified out that your layer reflects CD block 
boundaries while GDAM reflects tehsil boundaries. Both may be 'ok' in 
what they represent.
3. The only reason I have not shared any data of mine is simply because 
I have only two datasets: the GDAM one (which is both already available 
and being criticised by some ;-)) and a dataset of admin boundaries 
(district and tehsil) for Karnataka state alone which we paid for and 
got digitized from District Census Handbooks of 1991. When I check GDAM 
or your layer versus this layer, I see no major differences. So then 
what is the point in uploading that data?


Sharad


--
Democratizing Forest Governance in India
(In press with Oxford University Press India)

--
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us by visiting http://datameet.org
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Re: [datameet] Re: Shapefiles for complete India

[Dilip Damle]

Hello all,

Nice enlightening discussion with a little sparks,

A small thumbnail photo of the member may help reduce sparks because then 
you create an image of that person in your mind based on the photo. BTW my 
photo here is about 40 years outdated now I look more ferocious :) 

Any way to add to the confusion there is also the Division 
So it seems to be 

Country  State  Division  District  Tehsil / Taluk  Some Kind of 
 Block  Village 

Let us first get this ans confirm  if each is subset of the other or there 
are overlaps and if there is any other item missing in between then let us 
proceed  

On Thursday, August 7, 2014 10:32:08 PM UTC+5:30, Justin Meyers wrote:

 Sharad,
 Sorry about my tone; I get excited/ pushy when it comes to geospatial 
 data.  In my experience, you have to ask, ask again, and keep asking (like 
 I did with you until you finally responded).  I guess I should only ask 
 once, and if you don't respond, then you never will...

 In my honest opinion, GADM is junk.  If you want me to explain the top ten 
 reasons why, I can.  

 As per you sharing your data; if you can share it, it would be great. 
  Digitized one off data is unique, and could be better than what is on this 
 forum.  If you or your company paid for the data, and cannot share, it 
 makes sense.  I figure since you are here, looking for free data (or 
 whatever), asking questions about it, and have data, why not share what you 
 have.

 Just my 2 cents.  Sorry for coming off as a jerk. I apologize.

 Justin

 On Thursday, August 7, 2014 12:51:39 PM UTC-4, Sharad Lele wrote:

 On 07-Aug-14 8:18 PM, Justin Meyers wrote: 
  As per our conversation yesterday, could you upload your data?  You 
  keep criticizing everyone else's data, but you don't share your own!?? 
   Help me help you :) 
 Dear Justin: 

 I think you are going too far and too fast. A more moderate tone would 
 be appreciated. 

 1. I never criticized anyone: in fact, i said GDAM was ok, and you were 
 the one who used fairly strong words against it. 
 2. I have only clarified out that your layer reflects CD block 
 boundaries while GDAM reflects tehsil boundaries. Both may be 'ok' in 
 what they represent. 
 3. The only reason I have not shared any data of mine is simply because 
 I have only two datasets: the GDAM one (which is both already available 
 and being criticised by some ;-)) and a dataset of admin boundaries 
 (district and tehsil) for Karnataka state alone which we paid for and 
 got digitized from District Census Handbooks of 1991. When I check GDAM 
 or your layer versus this layer, I see no major differences. So then 
 what is the point in uploading that data? 

 Sharad 


 -- 
 Democratizing Forest Governance in India 
 (In press with Oxford University Press India) 



-- 
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.
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Re: [datameet] Re: Shapefiles for complete India

[Devdatta Tengshe]

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 sharad.l...@gmail.com 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 shara...@gmail.com 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

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 Datameet is a community of Data Science enthusiasts in India. Know
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 Groups datameet group.
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 email to 

Re: [datameet] Re: Shapefiles for complete India

[Devdatta Tengshe]

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 devda...@tengshe.in
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 sharad.l...@gmail.com
 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 shara...@gmail.com 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.xm
 l?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

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Re: [datameet] Re: Shapefiles for complete India

[D Thakker]

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 shara...@gmail.com 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

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 about us by visiting http://datameet.org
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