[R] colorful plot

[Jose Iparraguirre]

Hi Nooshin,

Have you tried the RColorBrewer package? 
After loading the package, the following gives you the whole array of available colour palletes.

> display.brewer.all(n=NULL, type="all", select=NULL, exact.n=TRUE)

Then, you can add to your code something like this (I'm using palette "Set3" just as an example):

> nooshin.col = brewer.pal(12,"Set3")

And:

> Nooshin_heatmap <- heatmap(Nooshin_matrix, Rowv=NA,
Colv=NA,scale="column", margins=c(5,10), col=nooshin.col)


Hope this helps.

José

José Iparraguirre
Chief Economist
Age UK

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-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On Behalf Of nooshin bahar
Sent: 21 August 2012 10:04
To: Jessica Streicher; r-help at r-project.org; petr.pikal at precheza.cz
Subject: Re: [R] colorful plot

>
> > Hello guys,
> >
> > I want to increase contrast of colors in my matrix plot.
>
  > Nooshin<-
as.matrix(matrix(sample(c(0.02,0.01,0.003,0.001,0.0001,0.0005,0.0004,0.00013),2401,replace=TRUE),ncol=49),
row.names=1, header=TRUE)
  > filled.contour(Nooshin, main="Permeability")
 > Nooshin_matrix <- data.matrix(Nooshin)
 > Nooshin_heatmap <- heatmap(Nooshin_matrix, Rowv=NA,
Colv=NA,scale="column", margins=c(5,10))

> How I could increase contrast with 8 kind of color.
my break is mybreaks <-
c(0.02,0.01,0.003,0.001,0.0001,0.0005,0.0004,0.00013)
with different color.
heat map give me red-orang-yellow.I need 8 different colors.

Best Regards
Nooshin


>
> Thanks
> Nooshin
>

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