Removing White Lines In Heatmap

Question

[Woa]

Hello all,

I'm trying to plot a heatmap using the heatmap.2 function from the 'Gplots' package.I'm getting some unwanted white lines separating some of the rows and columns. Can somebody help me out to get rid of these lines? The code and the plot are as follows:

Thanks in Advance

heatmap.2(my.mat,
Rowv=TRUE,
Colv=FALSE,
dendrogram= c("row"),
scale="none",
distfun = dist,
hclustfun = hclust,
key=TRUE,
keysize=1,
trace="none",
density.info=c("none"),
margins=c(15, 20),
col=redgreen(75),
sepwidth=c(0,0),
cexRow=1.00    
)

[Maxime Lamontagne]

Hi, try to print your heatmap in a file, it could be an artifact from the graphic device.

[Woa]

Actually I'm printing it to a png file.I'm not sure, but can this be a case as mentioned here: https://stat.ethz.ch/pipermail/r-devel/2011-July/061540.html

[Maxime Lamontagne]

I had the same problem and by changing the size while using png() I was able to remove the white lines, even if you change the size by 1 pixel. Another question: are-you using png() or dev.opy()?

[Woa]

I'm using png()

Answer 1

[Woa]

The plot works fine with R version 2.12.1