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 <navee...@gmail.com> 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 <lakhtak...@gmail.com> >>> 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 >>>> >>>> -- >>>> 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 data...@googlegroups.com. >>>> To view this discussion on the web visit >>>> https://groups.google.com/d/msgid/datameet/570bafb6-783a-4313-8de4-2088e162c6c2%40googlegroups.com >>>> <https://groups.google.com/d/msgid/datameet/570bafb6-783a-4313-8de4-2088e162c6c2%40googlegroups.com?utm_medium=email&utm_source=footer> >>>> . >>>> >>> >>> >>> -- >>> -. >>> Ajayakumar A >>> >>> -- > Datameet is a community of Data Science enthusiasts in India. 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