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 grid.hline.col and grid.vline.col.

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.