[R] plotrix 2.8-4

[rtist]

Hi, 
And thanks for the great package.  I was using it to output a color table
map for a financial returns matrix.
I like that the fact that I can output a table of values with corresponding
colors, which I was asking about on an earlier thread.

Any way to get each box to have a dark black line border?

ex:
library(plotrix)
x<-matrix(rnorm(30),6,5)
cellcol[x>0]<-c("green")
cellcol[x<0]<-c("red")
color2D.matplot(x=round(x,2),cellcolors=cellcol,show.values=TRUE,main="Association
plot")

thanks!
Rtist


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