Transcription factor footprinting

[l-magnificence]

When I performed motif footprinting analysis from the signac footprinting vignette in my own dataset, the motif object set in seurat was 0x0 and there occur an error in functon PlotFootprint: Error in (ncol(x = x) - background):ncol(x = x) : argument of length 0.
So I created motif assay directly in Motif analysis vignette , and then run footprint and PlotFootprint function, but it still occur an error: Error in (ncol(x = x) - background):ncol(x = x) : argument of length 0.

code:
tmp <- Footprint(
object = tmp ,
motif.name = features,
genome = BSgenome.Hsapiens.UCSC.hg38
)

PlotFootprint(tmp, features = features)

[timoast]

Please include the full code you're running and the output of sessionInfo()

[l-magnificence]

I found the reason why this error occured.
One of the cell types in my data has number 1 ,so it can't extract data in GetFootprintData function.
When I deleted this cell, it run greatly.

[timoast]

Ok this should now be fixed on the develop branch. See the website for installation instructions