[R] image function with large matrices

[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$V5, 
    xo=seq(min(ytar_rcayrtgy$V2), max(ytar_rcayrtgy$V2), length = 131),
    yo=seq(min(ytar_rcayrtgy$V4),max(ytar_rcayrtgy$V4), length = 131)
   )
)


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