[R-sig-Geo] Question about image.plot

[Muhammad Rahiz]

Dear all,

I've plotted my data using the following

image.plot(data, zlim=c(0,500), add=FALSE, nlevel=64, horizontal=T, 
legend.shrink=0.5, legend.width=.8, col=tim.colors(64))

However, I see white spaces in my image which I attribute them to values 
that is >500 than that defined in zlim().

Does anyone have any suggestions how I can rectify this issue? I am 
thinking in the lines of, if value >=500, assign color x.



Thanks.


Muhammad