deeptools / HiCExplorer

HiCExplorer is a powerful and easy to use set of tools to process, normalize and visualize Hi-C data.
https://hicexplorer.readthedocs.org
GNU General Public License v3.0
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--setToZeroThreshold 1.0 for normalization method smallest #856

Open MWSchmid opened 1 year ago

MWSchmid commented 1 year ago

Hi there

Thanks for the tools, work really well so far. Just one point that caused quite some confusion. The manual for the normalization step says:

--setToZeroThreshold

"It is recommended to set it for the normalize mode “smallest” to 1.0."

I did so and observed that the smallest sample was very different from the rest by having much more inter-chromosomal interactions. I guess that choosing exactly 1.0 deletes most inter-chromosomal interactions in all samples except for the smallest. Hence, I wouldn't recommend choosing 1.0 and I would also think about disabling this threshold in the "smallest" mode.

Best,

Marc