Re: [datameet] Village boundaries map for Odisha

2017-12-31 Thread Sharad Lele [शरच्चंद्र लेले] 

Dilip:

Having banged my head against the same brick wall, I agree broadly with 
what you have said. I have a few additional points, though.


1. If one wants a single village or few villages to be mapped, one can 
try to use the village cadastral maps. It is laborious, because again 
the maps are not georeferenced, but feasible with some ground data. Even 
here, errors are significant: 100s of meters often (especially for 
common lands/forest lands on the edges of villages, and especially in 
hilly areas)


2. The only publicly available source of village boundary maps (a full 
sheet of polygons) is the district census handbook, which contain 1 page 
each showing all the villages in a taluka (or sometimes CD block). They 
in turn have only sourced this from the directorate of land records and 
survey settlement in each state. We spoke to the directorate in 
karnataka, and the way they have created these taluka-level maps was to 
lay down all the individual village cadastral maps on the floor and 
piece them together like a jigsaw puzzle. of course they could not do 
this very precisely--they were left with gaps and overlaps, and they 
simply 'adjusted' them as best as possible. These 'puzzles' covered the 
whole floor of a big hall (because a taluka may contain 100 villages) 
and then they 'reduced' the hall size map to a page using analog drawing 
techniques. So the census/DLS maps are quite crude. As Dilip says: 
adequate to let you know which village is where, and what is its 
approximate shape, but area of the polygon can differ from cadastral map 
areas by upto 50%. To add to the problem: census has been very 
inconsistent in the way they deal with uninhabited villages: sometimes 
showing them, sometimes not, etc.


3. I don't quite agree with Dilip about habitation: It is true that 
folks owning land in village A may actually live in village B. As an 
extreme version of this, it can happen that village A may have zero 
population, but non-zero cultivated land, because all the cultivators 
live in village B. But the 'settlement' of a village by definition has 
to lie within its boundary, because settlement refers by definition to 
the people living in the village (not all people owning land in the 
village).


4. So also I don't understand Dilip's point 5 about habitations merging. 
Sure: settlement be side by side and physically contiguous across a 
revenue village boundary, but that to me is not an issue: census, if 
properly done, will put the two sets of households in their respective 
villages.


5. Frankly, at this point, I would be happy even if NRSC/Bhuvan and 
others released a polygon layer of 2011 and 2001 village polygons AS IT 
IS, but with consistent and complete numbering of polygons, and 
georeferenced to the best of their ability (with a statement about how 
much error is expected).


6. HOWEVER, THERE IS MORE ACCURATE DATA, IT IS JUST NOT BEING PUT IN THE 
PUBLIC DOMAIN:
a) most states have land record digitisation which now includes 
digitization of cadastral maps. But they either don't share it at all, 
or charge you huge amounts for it, even though it is created with public 
money. of course, cadastral data are i) not georeferenced, and ii) out 
of date, iii) one village at a time (which when combined with the 
non-georeferenced nature make things difficult to put together. But 
again, something would be better than nothing.
b) NRSC and/or state agencies are working on projects to georeference 
village boundaries and individual parcels. No one knows how far they 
have gone in each state, how good their work is, and cerrtainly none of 
it is in the public domain. But it is there, and we must constantly push 
to get access to it as a matter of right.
c) Many individual programmes/projects such as watershed development, 
irrigation, agriculture department projects do their own digitisation 
and georeferencing. Again, they refuse to share it.
d) Census 2011 had put out a ppt claiming (for towns) they have even 
mapped individual streets and buildings (I had posted the link to this 
ppt some years ago), but when we asked them, they denied any knowledge 
about it!


7) About whether accurate data is every possible: the problem is not 
technical or even one of quality control in implementation. The problem 
is inherently political: folks in villages or towns have always opposed 
rigorous surveying because they think they stand to lose, or might get 
punished when their encroachments come to light, etc. DLR-Karnataka ran 
a pilot project which took them 6 months per village because of this 
kind of opposition.


Sharad

On 31-12-2017 00:30, Dilip Damle wrote:

Hello
The Village boundary puzzle will always remain a puzzle.
Recently I have worked on a Creating as good a Village Map as I could 
do for a Block in Uttarakhand consisting of only 125 Villages.


I had an earlier map that I had traced form the Patwari/Cesuns ,ap 20 
years ago. But the areas of that map were in the range of 25%

Re: [datameet] Village boundaries map for Odisha

2017-12-30 Thread Dilip Damle 
Hello
The Village boundary puzzle will always remain a puzzle. 
Recently I have worked on a Creating as good a Village Map as I could do 
for a Block in Uttarakhand consisting of only 125 Villages. 

I had an earlier map that I had traced form the Patwari/Cesuns ,ap 20 years 
ago. But the areas of that map were in the range of 25% to eeven 200 % of 
the aera as per revenue department. 

The I took a map from Justin (on our group) for that area. It had many 
missing villages. After several days of retracing on Google Earth I created 
a better map.
But it was time consuming just for 125 Villages.

There are several issues 

1. No one actually has correct georeferecned accurate enough boundaries.
2. Whatever is available is just the correct (to an extent) juxtaposition 
of villages. 
3. Sometimes the Uninhabited villages are missing as in 2001 census Data.
4. It sis not necessary that the Habitation of a particular villages is 
within the Revenue boundary of that village.
5. Sometimes the habitations merge between two villages to form an 
apparently single village.


Better and more accurate village maps can only be created IMO by having at 
least ONE POINT inside  a Khasara or a survey number 100% accurately mapped 
and them merging them to get a Revenue village map. 
For large units of Survey numbers we will need More than one points. 


I am pessimistic about we ever achieving that accuracy in India. 
Because I have seen that even in a Specific Project based PAID Survey 
assignment  for Engineering applications some surveyors FUDGE the data. 

There could be Good quality work in some pockets but when you mix Good 
Quality and Bad quality then the end result is bad quality and not average 
quality. 

We need to realise that.




On Thursday, 28 December 2017 12:30:40 UTC+5:30, Sharad Lele wrote:
>
> Dear Ananya:
>
> It is possible to match the 2001 code with 2011 codes using the lookup 
> tables that have been circulated earlier on this group.
>
> The fact that bhuvan layer matches only indicates (to me) that Bhuvan is 
> still using 2001 village boundaries...
>
> Sharad
>
> On 28-12-2017 11:52, ANANYA BHATIA wrote:
>
> Yes Even the village codes do not match with census 2011, if you want to 
> tak a common attribute out of the two tables and try to link them. I have 
> been trying for this, but no success. but if you will check and put bhuvan 
> wms layer for odisha villages, it matches. And i do not know what is the 
> problem with the authorities for not sharing the shapefiles, i have tried 
> this for Uttarakhand, but had to do my own "Jugaad". :) 
>
> Regards.
>
> On Thu, Dec 28, 2017 at 11:44 AM, Sharad Lele  > wrote:
>
>> Dear Ananya:
>>
>> Thanks for sharing this. A quick check indicates that this shapefile is 
>> for 2001 census. The field "vid" corresponds to the Census 2001 village 
>> code (extended code including state, district, block and village code). Not 
>> sure whether the village boundaries match 2001 boundaries, but there is 
>> some distinct variation in boundaries w.r.t. 2011 boundaries as given in 
>> the District census handbooks of 2011.
>>
>> Presumably the 2001 codes can be updated by using the correspondence 
>> table with 2011 that has been circulated on this group several times 
>> before. But the shape mismatch w.r.t. 2011---I don't know how pervasive it 
>> is and how it can be corrected...
>>
>> this is for information of users.
>>
>> Sharad
>>
>> On Wednesday, December 27, 2017 at 4:27:47 PM UTC+5:30, Ananya Bhatia 
>> wrote: 
>>>
>>> Please check if this helps. and adding to your request here, if anyone 
>>> can provide with the shapefiles of uttarakhand, latest, village and block 
>>> level.  
>>>  in_bhuvan_village_state_OD.cpg.rar 
>>> 
>>> ​​ 
>>>  in_bhuvan_village_state_OD.dbf.rar 
>>> 
>>> ​​ 
>>>  in_bhuvan_village_state_OD.prj.rar 
>>> 
>>> ​​ 
>>>  in_bhuvan_village_state_OD.shp.part1.rar 
>>> 
>>> ​​ 
>>>  in_bhuvan_village_state_OD.shp.part2.rar 
>>> 
>>> ​​ 
>>>  in_bhuvan_village_state_OD.shp.part3.rar 
>>> 
>>> ​​ 
>>>  in_bhuvan_village_state_OD.shp.part4.rar 
>>> 
>>> ​​ 
>>>  in_bhuvan_village_state_OD.shx.rar 
>>> 
>>> ​
>>>
>>> On Wed, Dec 27, 2017 at 3:57 PM, Thejesh GN  wrote:
>>>
 We are working on it. It will be out sometime early next year.

 Thej
 --

Re: [datameet] Village boundaries map for Odisha

2017-12-27 Thread Sharad Lele [शरच्चंद्र लेले] 

Dear Ananya:

It is possible to match the 2001 code with 2011 codes using the lookup 
tables that have been circulated earlier on this group.


The fact that bhuvan layer matches only indicates (to me) that Bhuvan is 
still using 2001 village boundaries...


Sharad

On 28-12-2017 11:52, ANANYA BHATIA wrote:
Yes Even the village codes do not match with census 2011, if you want 
to tak a common attribute out of the two tables and try to link them. 
I have been trying for this, but no success. but if you will check and 
put bhuvan wms layer for odisha villages, it matches. And i do not 
know what is the problem with the authorities for not sharing the 
shapefiles, i have tried this for Uttarakhand, but had to do my own 
"Jugaad". :)


Regards.

On Thu, Dec 28, 2017 at 11:44 AM, Sharad Lele > wrote:


Dear Ananya:

Thanks for sharing this. A quick check indicates that this
shapefile is for 2001 census. The field "vid" corresponds to the
Census 2001 village code (extended code including state, district,
block and village code). Not sure whether the village boundaries
match 2001 boundaries, but there is some distinct variation in
boundaries w.r.t. 2011 boundaries as given in the District census
handbooks of 2011.

Presumably the 2001 codes can be updated by using the
correspondence table with 2011 that has been circulated on this
group several times before. But the shape mismatch w.r.t. 2011---I
don't know how pervasive it is and how it can be corrected...

this is for information of users.

Sharad

On Wednesday, December 27, 2017 at 4:27:47 PM UTC+5:30, Ananya
Bhatia wrote:

Please check if this helps. and adding to your request here,
if anyone can provide with the shapefiles of uttarakhand,
latest, village and block level.
in_bhuvan_village_state_OD.cpg.rar


​​
in_bhuvan_village_state_OD.dbf.rar


​​
in_bhuvan_village_state_OD.prj.rar


​​
in_bhuvan_village_state_OD.shp.part1.rar


​​
in_bhuvan_village_state_OD.shp.part2.rar


​​
in_bhuvan_village_state_OD.shp.part3.rar


​​
in_bhuvan_village_state_OD.shp.part4.rar


​​
in_bhuvan_village_state_OD.shx.rar


​

On Wed, Dec 27, 2017 at 3:57 PM, Thejesh GN
 wrote:

We are working on it. It will be out sometime early next year.

Thej
--
Thejesh GN *⏚* ತೇಜೇಶ್ ಜಿ.ಎನ್
http://thejeshgn.com
GPG ID :  0xBFFC8DD3C06DD6B0

On 27 December 2017 at 15:33,  wrote:

Hi Friends,

I need Village boundaries map and Block level map for
Odisha (Shape file or geojson). I would  be really
grateful if some could help me out.

With regards,
Papesh
Research Fellow,
Sociology
Pondicherry University

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Re: [datameet] Village boundaries map for Odisha

2017-12-27 Thread ANANYA BHATIA 
Yes Even the village codes do not match with census 2011, if you want to
tak a common attribute out of the two tables and try to link them. I have
been trying for this, but no success. but if you will check and put bhuvan
wms layer for odisha villages, it matches. And i do not know what is the
problem with the authorities for not sharing the shapefiles, i have tried
this for Uttarakhand, but had to do my own "Jugaad". :)

Regards.

On Thu, Dec 28, 2017 at 11:44 AM, Sharad Lele  wrote:

> Dear Ananya:
>
> Thanks for sharing this. A quick check indicates that this shapefile is
> for 2001 census. The field "vid" corresponds to the Census 2001 village
> code (extended code including state, district, block and village code). Not
> sure whether the village boundaries match 2001 boundaries, but there is
> some distinct variation in boundaries w.r.t. 2011 boundaries as given in
> the District census handbooks of 2011.
>
> Presumably the 2001 codes can be updated by using the correspondence table
> with 2011 that has been circulated on this group several times before. But
> the shape mismatch w.r.t. 2011---I don't know how pervasive it is and how
> it can be corrected...
>
> this is for information of users.
>
> Sharad
>
> On Wednesday, December 27, 2017 at 4:27:47 PM UTC+5:30, Ananya Bhatia
> wrote:
>>
>> Please check if this helps. and adding to your request here, if anyone
>> can provide with the shapefiles of uttarakhand, latest, village and block
>> level.
>>  in_bhuvan_village_state_OD.cpg.rar
>> 
>> ​​
>>  in_bhuvan_village_state_OD.dbf.rar
>> 
>> ​​
>>  in_bhuvan_village_state_OD.prj.rar
>> 
>> ​​
>>  in_bhuvan_village_state_OD.shp.part1.rar
>> 
>> ​​
>>  in_bhuvan_village_state_OD.shp.part2.rar
>> 
>> ​​
>>  in_bhuvan_village_state_OD.shp.part3.rar
>> 
>> ​​
>>  in_bhuvan_village_state_OD.shp.part4.rar
>> 
>> ​​
>>  in_bhuvan_village_state_OD.shx.rar
>> 
>> ​
>>
>> On Wed, Dec 27, 2017 at 3:57 PM, Thejesh GN  wrote:
>>
>>> We are working on it. It will be out sometime early next year.
>>>
>>> Thej
>>> --
>>> Thejesh GN *⏚* ತೇಜೇಶ್ ಜಿ.ಎನ್
>>> http://thejeshgn.com
>>> GPG ID :  0xBFFC8DD3C06DD6B0
>>>
>>> On 27 December 2017 at 15:33,  wrote:
>>>
 Hi Friends,

 I need Village boundaries map and Block level map for Odisha (Shape
 file or geojson). I would  be really grateful if some could help me out.

 With regards,
 Papesh
 Research Fellow,
 Sociology
 Pondicherry University

 --
 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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 an email to datameet+u...@googlegroups.com.
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>>>
>>> --
>>> Datameet is a community of Data Science enthusiasts in India. Know more
>>> about us by visiting http://datameet.org
>>> ---
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>>>
>>
>>
>>
>> --
>> *Ananya Bhatia*
>> *Research Analyst *
>> *Environics Trust, New Delhi*
>>
>> *"Growth for the sake of growth is the ideology of the cancer cell"-
>> Edward Abbey*
>>
>> --
> Datameet is a community of Data Science enthusiasts in India. Know more
> about us by visiting http://datameet.org
> ---
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-- 
*Ananya Bhatia*
*Research Analyst *
*Environics Trust, New Delhi*

*"Growth for the sake of growth is the ideology of the cancer cell"- Edward
Abbey*

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To unsubs

Re: [datameet] Village boundaries map for Odisha

2017-12-27 Thread Sharad Lele 
Dear Ananya:

Thanks for sharing this. A quick check indicates that this shapefile is for 
2001 census. The field "vid" corresponds to the Census 2001 village code 
(extended code including state, district, block and village code). Not sure 
whether the village boundaries match 2001 boundaries, but there is some 
distinct variation in boundaries w.r.t. 2011 boundaries as given in the 
District census handbooks of 2011.

Presumably the 2001 codes can be updated by using the correspondence table 
with 2011 that has been circulated on this group several times before. But 
the shape mismatch w.r.t. 2011---I don't know how pervasive it is and how 
it can be corrected...

this is for information of users.

Sharad

On Wednesday, December 27, 2017 at 4:27:47 PM UTC+5:30, Ananya Bhatia wrote:
>
> Please check if this helps. and adding to your request here, if anyone can 
> provide with the shapefiles of uttarakhand, latest, village and block 
> level. 
>  in_bhuvan_village_state_OD.cpg.rar 
> 
> ​​
>  in_bhuvan_village_state_OD.dbf.rar 
> 
> ​​
>  in_bhuvan_village_state_OD.prj.rar 
> 
> ​​
>  in_bhuvan_village_state_OD.shp.part1.rar 
> 
> ​​
>  in_bhuvan_village_state_OD.shp.part2.rar 
> 
> ​​
>  in_bhuvan_village_state_OD.shp.part3.rar 
> 
> ​​
>  in_bhuvan_village_state_OD.shp.part4.rar 
> 
> ​​
>  in_bhuvan_village_state_OD.shx.rar 
> 
> ​
>
> On Wed, Dec 27, 2017 at 3:57 PM, Thejesh GN  > wrote:
>
>> We are working on it. It will be out sometime early next year.
>>
>> Thej
>> --
>> Thejesh GN *⏚* ತೇಜೇಶ್ ಜಿ.ಎನ್
>> http://thejeshgn.com
>> GPG ID :  0xBFFC8DD3C06DD6B0
>>
>> On 27 December 2017 at 15:33, > wrote:
>>
>>> Hi Friends,
>>>
>>> I need Village boundaries map and Block level map for Odisha (Shape file 
>>> or geojson). I would  be really grateful if some could help me out.
>>>
>>> With regards,
>>> Papesh
>>> Research Fellow,
>>> Sociology
>>> Pondicherry University
>>>
>>> --
>>> Datameet is a community of Data Science enthusiasts in India. Know more 
>>> about us by visiting http://datameet.org
>>> ---
>>> You received this message because you are subscribed to the Google 
>>> Groups "datameet" group.
>>> To unsubscribe from this group and stop receiving emails from it, send 
>>> an email to datameet+u...@googlegroups.com .
>>> 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 datameet+u...@googlegroups.com .
>> For more options, visit https://groups.google.com/d/optout.
>>
>
>
>
> -- 
> *Ananya Bhatia*
> *Research Analyst *
> *Environics Trust, New Delhi*
>
> *"Growth for the sake of growth is the ideology of the cancer cell"- 
> Edward Abbey*
>
>

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Re: [datameet] Village boundaries map for Odisha

2017-12-27 Thread ANANYA BHATIA 
Please check if this helps. and adding to your request here, if anyone can
provide with the shapefiles of uttarakhand, latest, village and block
level.
 in_bhuvan_village_state_OD.cpg.rar

​​
 in_bhuvan_village_state_OD.dbf.rar

​​
 in_bhuvan_village_state_OD.prj.rar

​​
 in_bhuvan_village_state_OD.shp.part1.rar

​​
 in_bhuvan_village_state_OD.shp.part2.rar

​​
 in_bhuvan_village_state_OD.shp.part3.rar

​​
 in_bhuvan_village_state_OD.shp.part4.rar

​​
 in_bhuvan_village_state_OD.shx.rar

​

On Wed, Dec 27, 2017 at 3:57 PM, Thejesh GN  wrote:

> We are working on it. It will be out sometime early next year.
>
> Thej
> --
> Thejesh GN *⏚* ತೇಜೇಶ್ ಜಿ.ಎನ್
> http://thejeshgn.com
> GPG ID :  0xBFFC8DD3C06DD6B0
>
> On 27 December 2017 at 15:33,  wrote:
>
>> Hi Friends,
>>
>> I need Village boundaries map and Block level map for Odisha (Shape file
>> or geojson). I would  be really grateful if some could help me out.
>>
>> With regards,
>> Papesh
>> Research Fellow,
>> Sociology
>> Pondicherry University
>>
>> --
>> Datameet is a community of Data Science enthusiasts in India. Know more
>> about us by visiting http://datameet.org
>> ---
>> You received this message because you are subscribed to the Google Groups
>> "datameet" group.
>> To unsubscribe from this group and stop receiving emails from it, send an
>> email to datameet+unsubscr...@googlegroups.com.
>> 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.
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>



-- 
*Ananya Bhatia*
*Research Analyst *
*Environics Trust, New Delhi*

*"Growth for the sake of growth is the ideology of the cancer cell"- Edward
Abbey*

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Datameet is a community of Data Science enthusiasts in India. Know more about 
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Re: [datameet] Village boundaries map for Odisha

2017-12-27 Thread Thejesh GN 
We are working on it. It will be out sometime early next year.

Thej
--
Thejesh GN *⏚* ತೇಜೇಶ್ ಜಿ.ಎನ್
http://thejeshgn.com
GPG ID :  0xBFFC8DD3C06DD6B0

On 27 December 2017 at 15:33,  wrote:

> Hi Friends,
>
> I need Village boundaries map and Block level map for Odisha (Shape file
> or geojson). I would  be really grateful if some could help me out.
>
> With regards,
> Papesh
> Research Fellow,
> Sociology
> Pondicherry University
>
> --
> Datameet is a community of Data Science enthusiasts in India. Know more
> about us by visiting http://datameet.org
> ---
> You received this message because you are subscribed to the Google Groups
> "datameet" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to datameet+unsubscr...@googlegroups.com.
> For more options, visit https://groups.google.com/d/optout.
>

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[datameet] Village boundaries map for Odisha

2017-12-27 Thread papeshkumar 
Hi Friends,

I need Village boundaries map and Block level map for Odisha (Shape file or 
geojson). I would  be really grateful if some could help me out.

With regards,
Papesh
Research Fellow,
Sociology
Pondicherry University

-- 
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us by visiting http://datameet.org
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