Hi, New to R, I don't find a way to plot the following data with image():
x is a N * M matrix y is a vector of length M z is a N*M matrix I wish to plot z as a greyscale image, but my x axis is different for every row of the z data. Here is a minimal example, > theta<-c(3:6) # N > y<-c(1:5) # M > > x<-theta%*%t(y)# N * M > z<-sin(x) # N * M > > image(z) This doesn't give what I want, as the x axis needs to be shifted as we go from line to the following. (probably clearer if you plot matplot(x,z): the curves are shifted) The way I see it, I need either to construct a bigger matrix with all possible values of x giving the new dimension and arbitrary values for the missing points, or find a plotting function that would plot lines by lines. The ordering of the x and z values is giving me a headache on the first idea, and I can't find any option / alternative to image. Thanks in advance! baptiste ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
