Chapter 12 Legend
12.1 Removing the legend
Removing the legend entirely can be achieved by setting
legend = FALSE.
Changing the size of the legend can be achieved by setting
legend.width. The size of the text can be set using
12.3 Vertical spacing
You can increase or decrease the vertical space between the heatmap and the legend using the
legeng.vspace argument. The default is set to 0.1.
12.4 Legend breaks
Sometimes it is nice to customize the legend even further. Superheat tries to provide pretty legend breaks, but sometimes fails to do so. You can specify the desired number of breaks presented in the legend using the
legend.num.ticks argument. Unfortunately, if the underlying
pretty() function that decides the legend breaks does not think your number is a good choice, it will veto your suggestion and do whatever it wants instead.
legend.breaks argument can be used to manually specify the legend break values (i.e. where the numbers and ticks appear). This argument does not mess with the actual color range or presentation.