Dear Jim,
this is just to confirm that it your solution worked :)
Regards
Alex
--- On Fri, 2/18/11, Jim Lemon <j...@bitwrit.com.au> wrote:
> From: Jim Lemon <j...@bitwrit.com.au>
> Subject: Re: [R] color.scale error
> To: "Alaios" <ala...@yahoo.com>
> Cc: R-help@r-project.org
> Date: Friday, February 18, 2011, 9:10 AM
> On 02/18/2011 04:31 AM, Alaios
> wrote:
> > Dear all
> > when I call color.scale like this:
> >
> >
> > require('plotrix')
> >
> colcolor<-color.scale(c(range_sr,sr),extremes=c("red","blue"))
> >
> >
> > Error in if (min(reds)< 0 ||
> max(reds)> 1) reds<- rescale(reds, c(0, :
> > missing value where TRUE/FALSE needed
> >
> >
> > range_sr
> > [1] -10.00000000000000 44.02977813958366
> >
> > str(sr)
> > num [1:100, 1:100] 2.54 2.71 2.89
> 2.95 3.03 ...
> >
> >
> > this was working on simpler data sets before.
> >
> > How can I understand more what was the problem in
> depth.? I have read the source code of color.scale but
> unfortunately I did not make any progress to understand this
> error message. Is it possible to raise an exception before
> the error happens and see what went wrong?
> >
> Hi Alex,
> When you concatenate (c) the extremes and the matrix, you
> get a vector:
>
> > sr<-matrix(runif(10000,-10,44.03),100,100)
> > str(sr)
> num [1:100, 1:100] 11.2 27.13 4.13 -4.46 26.44 ...
> > sr_colors<-color.scale(c(-10,44.03,sr))
> > str(sr_colors)
> chr [1:10002] "#000000" "#FFFFFF" "#646464"
> "#AFAFAF" "#434343" ...
>
> Recreate the matrix:
>
> sr_colors<-matrix(sr_colors[-(1:2)],100,100)
>
> and all should be well.
>
> Jim
>
>
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