[R] How to draw a big heatmap?

[Uwe Ligges]

Ning Ma wrote:
> Hi everyone. How can I draw a big heatmaps?
> 
> png("foo.png",10000,10000)
> heatmap(x)
> dev.off()
> 
> where x is a big matrix, say 200*200.
> 
> The code above generates a small heatmap in the middle of the png file
> and leaves big margins. I expect it to take up more space so that the
> labels are not overlapping.



Without having looked in detail -  I cannot even allocate enough space 
for a 10000x10000 and you certainly do not want to produce some 300Mb 
file, do you?
Anway, to proceed, decrease the size of the margins, see ?par.

Uwe Ligges


> Thanks in advance.
> 
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