plotTrajectory second plot colour

[jblich870]

Hi,

Regarding plotTrajectory, the manual states:

"The second plot that is returned by plotTrajectory() is a dot plot of pseudo-time versus the value of the relevant feature, in this case, the gene score or gene expression of CEBPB. In this case, the cells are colored by their pseudo-time."

Would it be possible to add a feature that allows cells to be coloured by any metadata variable? For example one could colour cells by Sample, and then specify using pal = which colours would be assigned to each sample.

I had a go looking through the source code but was unable to figure out how to modify the function to allow this. In principle it seems like it might be a straightforward thing to add?

Would be v grateful!
Many thanks,
J