Hi everyone,
i have a matrix of points and want to calculate the direction and length of
each vector between the points.
I can easily calculate the length with dist(testdata), but is their a function
that returns a matrix of the direction of the vectors between points (angles
0-360°)?
testdata <- matrix(1:8, nrow=4, ncol=2,
dimnames=list(c("A","B","C","D"), c("x","y"))
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