Help with Slingshot functions

[lucygarner]

Hi,

Thank you for generating these functions. I am particularly interesting in the Slingshot functions, which look like they would be very useful. However I am struggling to get some of them to work.

Do you have examples for how to run each of the functions?

I used runSlingshot as follows (sample is my Seurat object):
test <- runSlingshot(sample, start.clus = 0, reduction = "umap")

This worked well, but then I tried to run plotCurveHeatmaps and I got an error. How do I specify the curve in this function? This is what I tried:
plotCurveHeatmaps(sample, curve = "curve1")

The curve is called "curve1" in the SlingshotDataSet object. However I got the following error:

Error in UseMethod("arrange_") :
no applicable method for 'arrange_' applied to an object of class "NULL"

Could you advise me as to where I am going wrong?

Many thanks,
Lucy

[mpmorley]

Section has been re written.