@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]> 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]> > 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]> 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] >>> > 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]> 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 >>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>> This dataset can not be easily found at present on the >>>>>>>>>>>>>>>>> GRID Geneva site http://www.grid.unep.ch/index.php?lang=en >>>>>>>>>>>>>>>>> in the same name. >>>>>>>>>>>>>>>>> may be it is still there somewhere with some other name. >>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>> For copyright check the metadata file which is here >>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>> http://geonetwork.grid.unep.ch >>>>>>>>>>>>>>>>> /geonetwork/srv/en/iso19139.xml?id=835 >>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>> rgds >>>>>>>>>>>>>>>>> Dilip Damle >>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>> On Wednesday, January 4, 2012 9:52:57 AM UTC+5:30, Karthik >>>>>>>>>>>>>>>>> Shashidhar wrote: >>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>> All the shapefiles for India that I have downloaded do >>>>>>>>>>>>>>>>>> not show PoK and Aksai Chin as part of India. Does anyone >>>>>>>>>>>>>>>>>> here have access >>>>>>>>>>>>>>>>>> to shapefiles that include these territories? Basically >>>>>>>>>>>>>>>>>> looking to publish >>>>>>>>>>>>>>>>>> (online) some maps, so want to make sure that it's accurate. >>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>> (I looked through the group archives, and all sources >>>>>>>>>>>>>>>>>> mentioned there do not show these regions as part of India) >>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>> Thanks >>>>>>>>>>>>>>>>>> Karthik >>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>> -- >>>>>>>>>>>>>>>> Datameet is a community of Data Science enthusiasts in >>>>>>>>>>>>>>>> India. Know more about us by visiting http://datameet.org >>>>>>>>>>>>>>>> --- >>>>>>>>>>>>>>>> You received this message because you are subscribed to the >>>>>>>>>>>>>>>> Google Groups "datameet" group. >>>>>>>>>>>>>>>> To unsubscribe from this group and stop receiving emails >>>>>>>>>>>>>>>> from it, send an email to [email protected]. >>>>>>>>>>>>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>> -- >>>>>>>>>>> Datameet is a community of Data Science enthusiasts in India. >>>>>>>>>>> Know more about us by visiting http://datameet.org >>>>>>>>>>> --- >>>>>>>>>>> You received this message because you are subscribed to the >>>>>>>>>>> Google Groups "datameet" group. >>>>>>>>>>> To unsubscribe from this group and stop receiving emails from >>>>>>>>>>> it, send an email to [email protected]. >>>>>>>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>> -- >>>>>>>>> Datameet is a community of Data Science enthusiasts in India. 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Know >>>>>>>> more about us by visiting http://datameet.org >>>>>>>> --- >>>>>>>> You received this message because you are subscribed to the Google >>>>>>>> Groups "datameet" group. >>>>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>>>> send an email to [email protected]. >>>>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>>>> >>>>>>> >>>>>>> -- >>>>> Datameet is a community of Data Science enthusiasts in India. 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