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I'm new to the GIS world. I've read several sites and previous posts but couldn't find a satisfactory answer.

I have a data set of ~400k coordinates from Los Angeles and would now like to determine their respective neighborhood.

Lat            Lon
-118.4382362   34.2530534   
(...)

What would be the best way to determine the coordinates neighborhood?


EDIT: I started working with ArcMap and plotted some test coordinates on a shapefile.

enter image description here

How would I now match the neighborhood names from the shapefile to my coordinate data? When I use the join function, it only counts how many coordinates occur in a specific neighborhood. However, I'd like to know the opposite i.e. the respective neighborhood name per coordinate pair.

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    Welcome to GIS SE! As a new user please take the tour to learn about our format. What GIS software are you using? What data do you have available, and what format are your 400k coordinates?
    – Midavalo
    Commented Oct 18, 2017 at 18:49
  • Thanks! I'm using QGIS. I received the coordinates through Google Maps' API using R. The coordinates are in CSV format.
    – Neicooo
    Commented Oct 19, 2017 at 7:23

1 Answer 1

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The short answer would be, independent of software, to spatially join or intersect your 400k coordinates to a data layer of Los Angeles neighborhoods. This would append the data from the neighborhood layer onto your coordinate layer, or create a new layer of the combined data

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  • Is there a way you could show me how to do this in QGIS?
    – Neicooo
    Commented Oct 19, 2017 at 7:24
  • Unsure of how this workflow goes in QGIS, im sure the terminology is the same
    – Maksim
    Commented Oct 19, 2017 at 12:39
  • That doesn't really help me yet. Alternatively, I was thinking, would it be possible to get the Zip Codes for my ~400k coordinates. What I have is the Street name and the coordinates. Getting the zip codes would actually be all what I need.
    – Neicooo
    Commented Oct 19, 2017 at 19:59
  • @Makism: Do you know how to do this in ArcMap?
    – Neicooo
    Commented Oct 22, 2017 at 14:46
  • Yes, basically what I gave in the answer would be the steps in ArcMap. Either spatially join your points to polygons, or intersect the two
    – Maksim
    Commented Oct 23, 2017 at 12:50

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