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Apr
19
comment how to overlay a polygon over SpatialPointsDataFrame and preserving the SPDF data?
@code123 gIntersects(pts, ply, byid=TRUE) will record that information, so it's just a matter of extracting it in whatever form you want.
Feb
8
awarded  Enlightened
Feb
8
awarded  Nice Answer
Nov
13
revised Is there a county-level maps dataset that includes independent cities in virginia?
deleted 95 characters in body
Nov
13
answered Is there a county-level maps dataset that includes independent cities in virginia?
Sep
24
accepted How to find points present in one layer but not in a second layer, using ArcGIS?
Sep
24
comment How to find points present in one layer but not in a second layer, using ArcGIS?
Perfect! Thanks for the super-clear explanation.
Sep
24
asked How to find points present in one layer but not in a second layer, using ArcGIS?
Aug
18
awarded  Caucus
Jul
24
revised How to create randomly points within polygons for each row of a dataframe matching a Polygon ID with R
Fixed final plot call
Jul
24
suggested approved edit on How to create randomly points within polygons for each row of a dataframe matching a Polygon ID with R
Jul
17
comment R SP library: identicalCRS and parameters in different order
Yeah, I'm sure there are. That's (just) one reason it's far from perfect!
Jul
17
awarded  Commentator
Jul
17
comment R SP library: identicalCRS and parameters in different order
To complicate things a bit further, identical CRS's need not even have the same set of arguments. See here for an example, and an (imperfect) function I've used to test for equivalence of PROJ4 strings.
Jun
16
revised AddJoin failing in Python ArcGIS
Fixed names of arcpy commands, giving fully qualified versions and correct cases to names, since arcpy is case-sensitive.
Jun
16
suggested approved edit on AddJoin failing in Python ArcGIS
Jun
6
revised How to automatically draw lines with a given angle from one single point in qgis 1.8?
added 7 characters in body
Jun
6
answered How to automatically draw lines with a given angle from one single point in qgis 1.8?
Jun
6
comment How to automatically draw lines with a given angle from one single point in qgis 1.8?
Two questions: (1) Do you actually want to get the line segments that connect the point to the nearest intersection with the contour (or do you really want long line segments that cross the contour); and (2) are you still open to an R-based solution?
May
30
awarded  Student