Add ncol/nrow for organising plot_cells output

[GBeattie]

Note: This is an enhancement suggestion, not a bug

Unless I'm mistaken, there is no option in plot cells to adjust the layout of the plots when more than one gene is being plotted (shown below is an example output of plot_cells which would ideally be arranged in one row). An option similar to nrow or ncol would be useful.

[shanshenbing]

Hello, I am using the latest stable monocle 3 and I also can not find ncol parameter in plot_cells() function. I wonder to know how to arrange my plot without nol or nrow para. for example: plot_cells(cds2, genes=pr_deg_ids[1:4], show_trajectory_graph=FALSE, label_cell_groups=FALSE, label_leaves=FALSE) the code will get a col=4, row=1 plot, but I want to arrange it to col=2, row=2. How can I get it?