[R] image() z-values beyond zlim
Roger.Bivand at nhh.no
Thu Mar 3 19:10:47 CET 2005
On Thu, 3 Mar 2005, Mikkel Grum wrote:
> Dear useRs,
> When plotting with image(), I would like the z-values
> that extend beyond the upper zlim to be indicated with
> one colour, or preferably with som sort of hatching,
> as I'm printing in black and white. By default these
> values just show up as blank areas in the image. I've
> tried all sorts of things, but nothing seems to work
> for me.
Use the breaks= and col= arguments to do this, extending zlim= to be the
range of z (or just drop it). Values of z outside zlim are made NA, and
thus not included in the span of colours.
> Any solutions would be greatly appreciated.
> R-help at stat.math.ethz.ch mailing list
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