Thanks Tom.
heatmap.2(mat, Rowv=NA, Colv=NA, col=redgreen, breaks=seq(-1,1,by=0.01),
symm=TRUE, trace="none", dendrogram="none")
that did the trick :)
Begin forwarded message:
From: "Leja, Thomas"
Date: 29 March 2011 03:47:59 GMT+01:00
To: "Benton, Paul"
Subject: Re: [R] comparing heatmaps
Yep, you have to specify the range for colours.
I usually plot the correlations from 0 to 1. Just add "breaks" option
and colour without the gradient:
col=redgreen, breaks=seq(0,1,by=0.1),
Hope this helps :)
Best,
Thomas
From: "Benton, Paul"
Date: 29 March 2011 02:36:02 GMT+01:00
To:
"<mailto:R-help@r-project.org>R-help@r-project.org<mailto:R-help@r-project.org>"
<<mailto:R-help@r-project.org>R-help@r-project.org<mailto:R-help@r-project.org>>
Subject: Re: [R] comparing heatmaps
Benno,
That helps but it only makes the color bar symmetrical. I want to be able to
compare 2 different heatmaps so that 0.7 (for example) is always the same tone
of green and not shifted slightly. Is this possible?
Paul
On 28 Mar 2011, at 10:42, Benno Pütz wrote:
On 27.Mrz.2011, at 22:54, Benton, Paul wrote:
library(gplots)
dat<-cor(matrix(rnorm(100, m=10), nrow=10))
mat<-cor(matrix(rnorm(100), nrow=10))
dev.new()
heatmap.2(mat, Rowv=NA, Colv=NA, col=redgreen(75), symm=TRUE,
trace="none", dendrogram="none",
main = paste("Correlation Matrix for time delay at ",
sep=""))
dev.new()
heatmap.2(dat, Rowv=NA, Colv=NA, col=redgreen(75), symm=TRUE,
trace="none", dendrogram="none",
main = paste("Correlation Matrix for time delay at ",
sep=""))
In this case adding
symkey = TRUE
to the heatmap.2 calls should help
Benno
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