On Wed, 29 Dec 2004, t takahashi wrote:
New to R, and didn't find the following in the docs.
Main use for R. to get feet wet, is to pipe in x,y,z data, one point per line, and plot it in 3d, like this:
{ echo 1,2,3 echo 2,4,6 ... } | R ...
But functions like contour seem to require index vectors that are sorted. I am curious why, and how to convert.
In addition to Uwe's points, if the elevation data are in a matrix then these functions do not require any index vectors.
-thomas
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