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[My apologies if this is a double post. I wrote the first post in HTML, and I think it may not have gotten through.] I have a SpatialLines(DataFrame) (e.g. streets) and SpatialPolygons(DataFrame) (e.g. neighborhoods). When a...
I have a plot with several layers of SpatialPoints and Polygons. They are all projected and in the correct CRS, so my map looks like it should. I now want to draw a circle with a radius x on a...
I am trying to use the "gDistance" from the "geos" package to calculate the Euclidean distance between a large number of points: to be exact, 28000 points. I'm doing: distance <- gDistance(points.sp) R doesn't run this on...
About 15.5 seconds here. This is awesome, thanks!! ________________________________________ From: Roger Bivand [Roger.Bivand at nhh.no] Sent: Friday, October 26, 2012 11:47 PM To: Wouter Steenbeek Cc: r-sig-geo at r-project.org Subject: Re: [R-sig...
Disregarding solution1 (;-)), let me give you a practical example where I (think I) really need the full matrix. Or more specifically, an example in which I use the function gWithinDistance (but the same memory issues apply here). I have a...
I'm sorry I didn't provide a toy example. I figured it was a simple question and I just couldn't find some well-known function. I am not very familiar with readWKT(), but I used the sp_intro...
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