Within the base package collection, see
?colorRamp and ?colorRampPalette
Then
or.to.blue<-colorRampPalette(c("orange","green","blue")) #green
included to avoid muddy blues
plot(df$X, df$Y,type="n")
text(df$X, df$Y, labels=df$Z,
col=or.to.blue(length(df$Z))[rank(df$Z)])
You don't need to order by Z to do this, but if you want that for
another reason, see ?order and try
oo<-order(df$Z)
df[oo,]
Steve E
>>> "hadley wickham" <[EMAIL PROTECTED]> 23/11/2007 01:02:13 >>>
Hi Juan,
Assuming that your data frame is named df, something like the
following should work:
library(ggplot)
qplot(X, Y, data = df, colour = Z, label = Z, geom = "text") +
scale_colour_continuous(low="orange", high = "blue")
You can find out more about ggplot2 at http://had.co.nz/ggplot2.
Hadley
On 11/22/07, Juan Pablo Fededa <[EMAIL PROTECTED]> 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?????
> Thanks in advance again,
>
>
>
> Juan Pablo
>
> ______________________________________________
> R-help@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
--
http://had.co.nz/
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