search for: cvreat

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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...