[R] Change font type for rows on Heatmap

[Ben Huas Thong]

Hi,

I would like to change the font type (to courier) of my rows labels when 
I plot a heatmap with R.

I have used cexRow=0.7 to modify the size but didn't find anything 
regarding font type.

heatmap(as.matrix(cebpa50), margins=c(5,10) , Colv=NA , scale="column", 
col=col4,  cexRow=0.7)

Thanks,

Ben