pheatmap: Color for NA

Question

Using R package pheatmap to draw heatmaps. Is there a way to assign a color to NAs in the input matrix? It seems NA gets colored in white by default. E.g.:

libra         


        

Answer 1

If you want the NAs to be grey, you can simply force the "NA" as double.

m[is.na(m)] <- as.double("NA")
pheatmap(m, cluster_rows=F, cluster_cols=F)