Re: [R] image function with large matrices

2011-04-21 Thread cutcopy11
I realized that my problem was not the image function but with the interp function. The default for the interp arguements xo and yo = 40, which is why I had a 40 X 40 square image. Here is the revised command. image( interp( ytar_rcayrtgy$V2, ytar_rcayrtgy$V4, ytar_rcayrtgy$V5, xo=seq

[R] image function with large matrices

2011-04-21 Thread cutcopy11
Hi, I am new to R. With the command below, I generated the image on the left in R. On the right, with the same data (x,y,z in columns), I generated a similar image in SigmaPlot. If you look at the R image, one can see that the resolution is low. Even though the data represents a 131 X 131 matri