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comment How to compare spatial patterns (crime cases vs population)?
You should mention you cross-posted at r-sig-geo mailing list as well.
Jun
29
comment Checking if Lng and Lat fall inside polygons from ESRI Shape file
@MoustafaAlzantot please edit your original question, not everyone reads comments. Plus, you have greater flexibility regarding code folding and syntax highlighting.
Jun
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comment Checking if Lng and Lat fall inside polygons from ESRI Shape file
@MoustafaAlzantot What's the exact command you're using to import data using readOGR?
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answered Checking if Lng and Lat fall inside polygons from ESRI Shape file
Jun
19
comment how to overlay a polygon over SpatialPointsDataFrame and preserving the SPDF data?
Great, this also works for multiple polygons (I've added an example to play with into Joshua's answer).
Jun
19
suggested rejected edit on how to overlay a polygon over SpatialPointsDataFrame and preserving the SPDF data?
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accepted how to overlay a polygon over SpatialPointsDataFrame and preserving the SPDF data?
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asked how to overlay a polygon over SpatialPointsDataFrame and preserving the SPDF data?
May
13
comment How to extract values from rasters at location of points in R?
What about something along the lines of cbind(coordinates(presencias), variables_presencia)? You can then convert to SPDF using coordinates(result) <- ~ X + Y and you can use the plethora of methods designed for spatial objects again.
May
13
comment How to extract values from rasters at location of points in R?
Shouldn't the values correspond to the coordinates of your presencias?
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