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2005 May 16
2
Fitting Contour to Data Points
Apologies for the mass mailing today!
I am attempting to produce a contour plot for phsical data on a map
matrix. I have a small number of data points which each has an (x,y)
co-ordinate together with a corresponding value which I would like to
cvreate a contour plot for.
I have tried the following code:
contour(data$x,data$y,data$value)
but am told:
Error in contour.default(data$x, data$y, data$value) :
increasing x and y values expected
I have re-ordered the matrix so that the x values are increasing, but
these do not necessarrily...