Juan Pablo Fededa wrote:
> Dear Contributors:
>
> I have the next matrix:
>
> "X" "Y" "Z"
>
> 1 2 526
> 2 5 723
> 3 10 110
> 4 7 1110
> 5 9 34
> 6 8 778
> 7 1 614
> 8 4 876
> 9 6 249
> 10 3 14
>
> I want to order the matrix from bigest Z (1110) to lower Z (14).
> Then I want to asign a color scale vector from blue ( bigest Z) to
> orange (lower Z), and then I want to make a plot with the X vs.Y
> coordinates of the matrix, with the number correspondent to Z in every
> point, each number coloured with the assigned colour scale colour.
> Is this doable?????
Sure, but I don't think you need to order the rows to do it:
library(plotrix)
jpf<-read.csv("jpf.csv")
plot(jpf$X,jpf$Y,main="Test of color/text plot",
type="n")
text(jpf$X,jpf$Y,labels=jpf$Z,
col=color.scale(jpf$Z,extremes=c("orange","blue")))
Note that the "extremes" argument will only work properly in the latest
version of plotrix.
Jim
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