Hi everyone,

I want to compare expression values of multiple genes in several cancers by using RNA-seq or microarray data. The data is in the form of z-score. I'm using three heatmaps for showing mean of expression, the frequency of samples whose z-score values are bigger than specific number and median of samples. In each heatmap, rownames are genes and colnames are cancers. What is the best way to present these data in a professional way? 

I don't know exactly what you're asking. If you're looking for a good heatmap package, try ComplexHeatmap:

https://bioconductor.org/packages/release/bioc/html/ComplexHeatmap.html

Or pheatmap on CRAN