[datameet] Re: village boundary layer for Karnataka

2014-09-10 Thread Justin Meyers
Sharad,
Thanks for uploading this.  I have looked at this and compared to a few 
other datasets.  I have a question about a location in your dataset and how 
it lines up with census data/ codes.  

LOC_CODE: 15103000 NAME:Krishnarajasagara Nac

If you go to the Census Digital Library 
(http://www.censusindia.gov.in/DigitalLibrary/Tables.aspx) and look at the 
2001 table for the Mandya District, the first records in the table read:

 STATE DISTRICT SUB-DISTT TOWN_VILL WARD EB LEVEL NAME TRU  29 22  
 0 0 DISTRICT Mandya Total  29 22   0 0 DISTRICT Mandya 
Rural  29 22   0 0 DISTRICT Mandya Urban  29 22  42205000 0 
0 TOWN Krishnarajasagara (NAC) Urban  29 22  42205000 1 0 WARD 
Krishnarajasagara 
(NAC) - Ward No.1 Urban 
I have seen SUB-DISTT codes of  before for states, districts, and very 
large cities (i.e. Hyderabad) - but this is something new!?  I believe the 
census table is wrong.  But something that is kinda throwing me off as well 
is your data has two of these, both with identical records, and the same 
Taluk, but you can see i think it should be split (but not certain)?

https://lh6.googleusercontent.com/-KIM29wpLGWs/VBBjJABRYAI/ALY/46VKKJX5oFE/s1600/mandya_error.jpg

a last thing to throw in the mix is that in a different census gis dataset, 
the north part has :2922000302365700 Chikkayarahalli and the south part 
has 2922000402378200 Hongahalli - these are both in the census table as 
well...


Can anyone make sense of this!??


Thanks!  Justin




On Thursday, August 21, 2014 1:34:07 PM UTC-4, Sharad Lele wrote:

 Dear All, 

 I have uploaded a village boundary layer for Karnataka (shapefile 
 format). Also has a README file explaining its source, strengths and 
 limitations. Link is: 

 https://app.box.com/s/fah79mv5fe951ywmq5d3 

 Hope this is useful. Would be nice if folks who use it post information 
 on how it was used. 

 I should mention that we paid for the layer but would like to make it 
 freely available. Ideally, if it were ported to Google maps, that would 
 help a lot of people. But that would also need better geo-rectification. 

 Sharad 

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



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[datameet] Re: village boundary layer for Karnataka

2014-09-10 Thread Sharad Lele
Hi Justin,

Thanks for pointing this out. I am sure there are a few other such errors 
in our layer--as mentioned in the readme, it was digitized from maps in 
census of india district handbooks, and those maps contain other confusing 
features such as roads, which may get mis-digitized. I don't have an 
immediate response beyond this. It will take me a while to get to the 
nittygritty. But others are welcome to point out more errors. The only 
tragedy here is that we are all reinventing a wheel invented at least 3 
times before: village boundaries have been digitized by state Remote 
Sensing Application Centres, by individual departments when they need them, 
and now (as mentioned in a separate post) by Census!

Sharad


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[datameet] Re: village boundary layer for Karnataka

2014-08-23 Thread Dilip Damle
Dear Mr. Lele,

Nice datatset 

I have converted the dataset to kml file for the reference of the people 
who may want to view it in Google Earth,

I have just converted it as it is. 

here are the links for download

http://tinyurl.com/qem2r4b

readme copy is here

http://tinyurl.com/q5hj25x

Rgds

Dilip Damle


On Thursday, August 21, 2014 11:04:07 PM UTC+5:30, Sharad Lele wrote:

 Dear All, 

 I have uploaded a village boundary layer for Karnataka (shapefile 
 format). Also has a README file explaining its source, strengths and 
 limitations. Link is: 

 https://app.box.com/s/fah79mv5fe951ywmq5d3 

 Hope this is useful. Would be nice if folks who use it post information 
 on how it was used. 

 I should mention that we paid for the layer but would like to make it 
 freely available. Ideally, if it were ported to Google maps, that would 
 help a lot of people. But that would also need better geo-rectification. 

 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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