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I'm trying to determine if a specific gps coordinate is within a gps spatial polygon.

My gps coordinate is being outputted from the geocode function from the ggmap library and the spatial polygons are being read from a GeoJSON file using readOGR.

So far I've found pieces of what I'm looking for in the sp and maptools library but no specific functions...any suggestions ?

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    The high-level ?over or the low-level ?point.in.polygon is what you are after. – mdsumner Sep 17 '15 at 20:30
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    or over. data wld be nice tho – hrbrmstr Sep 18 '15 at 1:09
  • In case you're dealing with projected coordinate systems, gIntersection from the rgeos package should work as well. – fdetsch Sep 18 '15 at 7:24
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I had a similar problem that I solved using the over() function from the sp package. The key was making sure that both the list of GPS points and the loaded shapefile are in the same CRS:

https://stackoverflow.com/questions/38151918/creating-a-buffer-around-a-geographic-point-and-then-checking-whether-a-list-of

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