`qc_scATAC()` can try to quantify negative ranges

[bjmt]

Hi,

I've been getting this error when running qc_scATAC(): Peaks are not in sorted order by (chr, end, start). This was a rather confusing error message, and it took some digging before I found the cause is due to qc_scATAC() generating negative ranges if input ranges are, for example, below 2000:

https://github.com/bnprks/BPCells/blob/93f16ffe4c56dad9e7187183a1e6f22a41b8f73a/r/R/atac_utils.R#L208-L221

As a result, when these ranges are eventually passed to the PeakMatrix::PeakMatrix function, the negative ranges get turned into very large unsigned values and thus trigger the 'not in sorted order' error (as the following ranges will be smaller).

[immanuelazn]

Good catch. I'll try to get a fix either today or tomorrow. Thanks!

[immanuelazn]

Let me know if this has fixed the problem.

Immanuel