[R] Generating a polygon around points
rni.boh at gmail.com
Fri Aug 15 16:51:37 CEST 2014
I've been struggling for half a day on what should be a simple problem...
I have a data frame of lat/long coordinates that describe a region, and I
want to draw a polygon around them so I can use that as a boundary (to be
thrown at INLA, but those details aren't important). The coordinates are
almost on a regular grid: there is some variation in latitude (because
we're on a globe).
If the coordinates were on a regular grid, I could use as.owin() to create
a mask, and go on from there (I have code that will work). But as.owin()
doesn't like unevenly spaced points.
Can anyone suggest a way to sort this out? Preferable without having to
mess around transforming the coordinates.
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