Yes, contourplot() takes irregular spaced values, but you need a regular
grid to project the data on to.
grid <- expand.grid(x=x,y=y);
contourplot(z~x*y,grid,cuts=50);
This gives me a plot with little coloured areas around my datapoints only.
A better way for me was to
library(akima);
data.int
Hello,
I'm dealing with the following problem:
I have a table with x and y coordinates and corresponding values of
a mineral concentration, let's call it z.
Can someone provide me a short step-by-step manual for the steps
necessary to get a contour map?
How to sort and interpolate my matrix
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