how to customize the color key value in pheatmap

[Yong]

Dear group members,

I plan to have color key value ranging from -2 to 2, not from -2 to 1.5 as shown in the image. I understand this is based on my data since I used the build-in option of pheatmap. I didn't add the argument color = colorRampPalette.

If I use the color argument, I need to set up the break and the corresponding pheatmap didn't have continuous color range.  How should I get the continuous color transition in my heatmap and the color key value is between -2 and 2 if I use the build-in option of pheatmap?

Thanks,

Yong

[Ivan Struzhkov]

Hello, as quick solution you could try specify limits in scale fill option

p1 + scale_fill_continuous(limits = c(0,20), breaks = c(0, 5, 10, 15, 20)

where p1 is gg object

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