Hi Nikhil and Naveen,
Thank you so much for this, it's very helpful! I am one of those new to the
subject, so the bracketed sentences very relevant.
I'll spend some time on this and get back to you if I am able to produce
some outputs that would be useful for everyone!
Thanks once again.
Sincerely,
Shruti
On Sun, Sep 1, 2019 at 8:16 AM Naveen Francis wrote:
> Data from OSM
>
> https://taginfo.openstreetmap.in/tags/amenity=police#map
>
>
> On Saturday, 31 August 2019 09:33:37 UTC+5:30, Nikhil VJ wrote:
>>
>> Hi Shruti,
>>
>> Sharing possible ways that I know of to find and build the data you're
>> looking for from the generally available map platforms. Sentences in
>> brackets give more background info for people new to the subject. Note: I
>> am adding an important caveat at the bottom.
>>
>>
>> *OpenStreetMap or OSM* (the all-open commons alternative to google maps
>> that you'll find members of this community earnestly pitching for) way:
>> Relevant tag/key-value pair : "amenity=police" . Link:
>> https://wiki.openstreetmap.org/wiki/Tag:amenity%3Dpolice
>> Query on Overpass Turbo (the "backend" of Openstreetmap and the quickest
>> way to search download specific data): https://overpass-turbo.eu/s/LX6
>>
>>
>> *Google Places API* (the more complicated "backend" of Google maps which
>> while having more coverage for now, is way more restricted both technically
>> and legally and the reason why you'll find members of this community
>> earnestly pitching for moving to OSM / enriching OSM instead )
>> ... lists "police" as one of the POI types than can be searched and
>> retrieved programmatically.
>> Link: https://developers.google.com/places/supported_types
>>
>> Note: Since the term "poiice" is generic, the direct search may also
>> throw up places that aren't police stations, eg: police training
>> institutes. It's safe to assume any dataset you get will be messy and will
>> need considerable manual work on it to get to an acceptable stage.
>>
>>
>> *Caveat:* We cannot expect full coverage or any proper answers about
>> extent of coverage (The usual answer to "does this cover everything?" is
>> "Nobody knows!") because that requires some official institution putting
>> the data out there, and if there had been one then one wouldn't need to
>> search on general map platforms. So what you get here is typically a
>> perpetual work-in-progress cobbling-together of data by ordinary people
>> volunteering time and effort. It will probably never be "complete" but it's
>> much better than nothing. The remedy to lack of coverage is to start
>> contributing to the common well and get others to do the same.
>>
>>
>> Regards
>> Nikhil VJ
>> Pune
>>
>>
>> On Friday, August 30, 2019 at 10:23:58 PM UTC+5:30, Ajayakumar A wrote:
>>>
>>> u can search in google map ( type it as *police stations*, first u hv
>>> to zoom the area, then u can type, if u search it for wide area in google
>>> map, u will not get full data.so u hv to locate some area and search the
>>> police station) and make it as kml files, then u can process it in Arcgis.
>>> U can prepare the map also.
>>>
>>> On Tue, Aug 27, 2019 at 8:12 PM Shruti Lakhtakia
>>> wrote:
>>>
>>>> Hi,
>>>>
>>>> I am a Ph.D. student working on crime and development in India, and I
>>>> am looking for:
>>>>
>>>> (1) a map of all the police stations in India, as well as their
>>>> jurisdictions,
>>>> (2) information on how police stations can be mapped to the assembly
>>>> constituencies of their respective states.
>>>>
>>>> Please do let me know if you have any experience working on this, or
>>>> any suggestions on how this information can be collected.
>>>>
>>>> Thank you!
>>>>
>>>> Sincerely,
>>>> Shruti Lakhtakia
>>>>
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