Re: [datameet] Pincode Boundaries of India

[Arun Ganesh]

Shravan, crowdsourcing the boundaries of pincodes is not as trivial as you
think. To start with, an area does not fall under a pincode, rather a
street does based on the post office that services it. Read this:
http://www.georeference.org/doc/zip_codes_are_not_areas.htm

You may also want to do some background reading of existing research that
has been done by the group here:
https://datameet.hackpad.com/M4hPFJVV2Gm?eid=v4YoXN4tTw5

To sum up, nobody has precise pincode boundaries like how you imagine them,
not even the postal department. Any existing datasets are an estimate at
best using some data processing on a large volume of address data.

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Re: [datameet] Pincode Boundaries of India

[Dilip Damle]

HI, 

Precise Pincode Boundaries may actually have a more complicated 
relationship with other boundaries than we think.

Because of the following reasons.

1. The current 6 digit pincode is a unique number of a group of 
villages/localities towns. and there is no next level to differentiate a 
village within that.
2. There are more than one post offices under one pin code especially 
branch offices which have no unique code.  
3. The most important. :: The objective of pincode is not concerned with 
the area of land under forest agriculture and any other activity except 
human habitation.
4. Because of 3 there could be distict possibilty that revenue boundaries 
which deal with entire land may even cross pincode boundaries at places. 

So end result is  Every house and every building will (ideally) have a 
unique pincode and a unique postoffice within that from where it is served. 
These will form a cluster of points and then we could aggregate them to 
form polygons which may have nothing or little to do with other boundaries.



On Tuesday, March 22, 2016 at 4:16:46 PM UTC+5:30, Shravan Shah wrote:
>
> Thank You guys. I think we should use the power of crowd sourcing / 
> community project to define these boundaries on OpenStreetMap. Any 
> suggestions are welcome.
>
> Thanks,
> Shravan
>
> On 22 March 2016 at 12:02, Ma-roof M > 
> wrote:
>
>> True. revenue village is what I had in mind. not the GPs.
>>
>> 
>> Knowledge, that is *discovered*, lasts a lifetime..
>>
>> Research Associate, PAS Project
>> CEPT University, Navrangpura, Ahmedabad, 380009 Gujarat, India
>> Per | mahr...@gmail.com  | 
>> *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 22 March 2016 at 11:17, Jaisen Nedumpala > > wrote:
>>
>>>
>>>
>>> 2016-03-22 9:33 GMT+05:30 Ma-roof M >:
>>>
 I would think that the tehsil/taluka boundaries would be a union of 
 respective village/town boundaries.

>>>
>>> Tehsil/Taluk boundaries are a union of respective revenue village 
>>> boundaries. Not to be confused with the village panchayat/municipality 
>>> boundaries.  
>>>  
>>>

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

 Research Associate, PAS Project
 CEPT University, Navrangpura, Ahmedabad, 380009 Gujarat, India
 Per | mahr...@gmail.com  | 
 *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 22 March 2016 at 00:26, Arun Ganesh >>> > wrote:

> It would be interesting to know how postal boundaries are defined 
> officially. I have asked a couple of postmasters and the most even they 
> have is a hand drawn diagram of the postman's beat. 
>
> On Mon, Mar 21, 2016 at 2:35 PM, Yogesh  > wrote:
>
>> Hi Shravan,
>>
>> You can get them either from gadm[1] where there are some 
>> restrictions on the use of data or from OSM boundaries[2] site where the 
>> data is available under ODbL. But I'm not sure whether Tehsils of all 
>> Indian states have been mapped in OSM and also gadm data may not be 
>> complete/accurate. 
>>
>>
>> [1]http://www.gadm.org/download
>> [2]https://osm.wno-edv-service.de/boundaries/
>>
>>
>> cheers,
>> yogi
>>
>>
>>
>> On 03/21/2016 02:09 PM, shravan wrote:
>>
>> Hi Dilip, 
>>
>> Where can I get the Tehsil boundaries from?
>>
>> Thanks,
>> Shravan
>>
>> On 21 March 2016 at 13:15, Dilip Damle > > wrote:
>>
>>> One could then supers impose tehsil boundaries which are available 
>>> and fine tune the boundaries
>>>
>>> On Thursday, March 17, 2016 at 11:34:00 AM UTC+5:30, Raphael 
>>> Susewind wrote: 

 Hi Shravan, 

 another option - depending on what you are after - could be to use 
 Devdatta's point data for post offices, voronoi it into polygons, 
 and 
 aggregate by pincode - that might not be the same as official 
 boundaries, but the closest you can get (each locality in India 
 would be 
 assigned to the most proximate postoffice...) 

 Best, 
 Raphael 

 On 17.03.2016 06:18, Jaisen Nedumpala wrote: 
 > Hi Shravan, 
 > 
 > I don't think that you would get it that easy. I was in search of 
 this 
 > data, since the year 2008. Eventually I could understand that 
 even the 
 > department of posts doesnt have this data. We could do it as a 
 community 
 > project to build it. Not easy, but not impossible. 
 > 
 > 
 > 2016-03

Re: [datameet] Pincode Boundaries of India

[shravan]

Thank You guys. I think we should use the power of crowd sourcing /
community project to define these boundaries on OpenStreetMap. Any
suggestions are welcome.

Thanks,
Shravan

On 22 March 2016 at 12:02, Ma-roof M  wrote:

> True. revenue village is what I had in mind. not the GPs.
>
> 
> 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  Mob:* +91 *94 285 10963 *| O: +91
> 79 26302470 ext: 467
> * f * fb.com/pas.cept | * in * linkedin.com/in/pascept
>
>
> On 22 March 2016 at 11:17, Jaisen Nedumpala  wrote:
>
>>
>>
>> 2016-03-22 9:33 GMT+05:30 Ma-roof M :
>>
>>> I would think that the tehsil/taluka boundaries would be a union of
>>> respective village/town boundaries.
>>>
>>
>> Tehsil/Taluk boundaries are a union of respective revenue village
>> boundaries. Not to be confused with the village panchayat/municipality
>> boundaries.
>>
>>
>>>
>>> 
>>> 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  Mob:* +91 *94 285 10963 *| O: +91
>>> 79 26302470 ext: 467
>>> * f * fb.com/pas.cept | * in * linkedin.com/in/pascept
>>>
>>>
>>> On 22 March 2016 at 00:26, Arun Ganesh  wrote:
>>>
 It would be interesting to know how postal boundaries are defined
 officially. I have asked a couple of postmasters and the most even they
 have is a hand drawn diagram of the postman's beat.

 On Mon, Mar 21, 2016 at 2:35 PM, Yogesh  wrote:

> Hi Shravan,
>
> You can get them either from gadm[1] where there are some restrictions
> on the use of data or from OSM boundaries[2] site where the data is
> available under ODbL. But I'm not sure whether Tehsils of all Indian 
> states
> have been mapped in OSM and also gadm data may not be complete/accurate.
>
>
> [1]http://www.gadm.org/download
> [2]https://osm.wno-edv-service.de/boundaries/
>
>
> cheers,
> yogi
>
>
>
> On 03/21/2016 02:09 PM, shravan wrote:
>
> Hi Dilip,
>
> Where can I get the Tehsil boundaries from?
>
> Thanks,
> Shravan
>
> On 21 March 2016 at 13:15, Dilip Damle  wrote:
>
>> One could then supers impose tehsil boundaries which are available
>> and fine tune the boundaries
>>
>> On Thursday, March 17, 2016 at 11:34:00 AM UTC+5:30, Raphael Susewind
>> wrote:
>>>
>>> Hi Shravan,
>>>
>>> another option - depending on what you are after - could be to use
>>> Devdatta's point data for post offices, voronoi it into polygons,
>>> and
>>> aggregate by pincode - that might not be the same as official
>>> boundaries, but the closest you can get (each locality in India
>>> would be
>>> assigned to the most proximate postoffice...)
>>>
>>> Best,
>>> Raphael
>>>
>>> On 17.03.2016 06:18, Jaisen Nedumpala wrote:
>>> > Hi Shravan,
>>> >
>>> > I don't think that you would get it that easy. I was in search of
>>> this
>>> > data, since the year 2008. Eventually I could understand that even
>>> the
>>> > department of posts doesnt have this data. We could do it as a
>>> community
>>> > project to build it. Not easy, but not impossible.
>>> >
>>> >
>>> > 2016-03-17 10:32 GMT+05:30 shravan >> > >:
>>> >
>>> > Hey everyone,
>>> >
>>> > I am looking for pin code boundaries of India, preferably in
>>> any of
>>> > the GIS file formats ( kml, kmz, shp, geojson or any other ).
>>> It
>>> > would be nice if someone can point me in the right direction,
>>> where
>>> > I can get this data from.
>>> >
>>> > Thanks,
>>> > Shravan
>>> >
>>> > --
>>> > 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
>>> > .
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>>> https://groups.google.com/d/optout.
>>> >
>>> >
>>> >
>>> >
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>>>