Adujusting the cell size in heatmap about complexheatmap

[TylerSagendorf]

I'm guessing if you modify the value passed to width in Heatmap instead of grid.rect, that will fix things; i.e., width = heatmap_width / 2. The problem is that the heatmap is drawing rectangles using width = heatmap_width and then your cell function is placing another smaller set of rectangles with a grey border on top of that. Also, you could omit the grid.rect part of the cell function and just specify border = "grey" in Heatmap and not have to re-draw the rectangles.