Chapter 11 Grid aesthetics
The cell grid can be customized as you like in terms of color, size.
11.1 Removing the grid
Removing the grid lines is achieved by setting
grid.hline = FALSE and
grid.vline = FALSE.
11.2 Grid color
One particularly nice setting is to make the grid lines white. Changing the color can be done using
11.3 Grid size
The grid lines can be made thicker or thinner using the
11.4 Clustered grid
When clustering the heatmap, the grid lines are placed around the clusters rather than the individual rows and columns. Specifically, this helps present the clusters when forcing the left and bottom labels to be the variable names.