Hi Angela,
It depends upon what you want to illustrate. If you are just interested in
the relative values, you can suppress the labels. One solution is to create
a very high PDF to look at the colors, which you could then expand and
scroll around to see the labels.

Jim

On Sat, Aug 29, 2015 at 6:06 AM, Angela via R-help <r-help@r-project.org>
wrote:

> Hi Jim,
>
> Thank you, that definitely reduced it but there are still about 600 genes,
> so too many to label. It does make the heat map itself look cleaner. Maybe
> labeling isn't necessary for the heat map?
>
> -Angela
>
>

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