plotHeatmap issues

[vivekbhr]

I am editing this to include multiple issues with plotHeatmap (instead of opening a series of issues).

• heatmap center label should reflect the --reference-point argument (I think this needs changes in computeMatrix code, rather than heatmapper.

• colorbar center should be centered at zero in case of divergent panel (I am not sure if it's because of tick labels misplacement, or the scale is actually wrong, but this stays wrong even after using a fixed zmin and zMax).

• options to scale the signal by sample or group before running the kmeans/hclust should be provided.

[dpryan79]

Regarding the 3rd option, I would generally prefer that people handle that themselves. I'm very much against adding more options to plotHeatmap/plotProfile/computeMatrix since they're already unwieldy.

Can you give an example of the colorbar centering issue?

[dpryan79]

I've split the first point into its own issue (#683). It's starting to annoy me now, so I'll fix it.

[dpryan79]

The first issue you mentioned is now taken care of in develop and will work properly in 3.0.2.