[R] How to save heatmap as image or pdf

[chakri_amateur]

Kevin Wright-5 wrote:
> 
> ?pdf
> 

I could save heat map to *.ps. Now I have another small query. In enclosed
image, column and row labels are overlapping, making image unsuitable for
reading. Can anyone direct me to literature/tutorial that explains how to
slant labels (at an angle) or how to reduce font size ?
http://r.789695.n4.nabble.com/file/n3413871/heatmap.jpg 

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