how is autoscale calculated for bigWig vs tdf?

[Diya]

Hello,

I am curious how the autoscale calculates the data range for bigWig vs. tdf files. I understand from this message that tdf scales to 98th percentile of the currently visible window. For my bigWig files, I'm getting a constant data range for the entire file, no matter which region, but the max of the range varies from 68th-80th percentile. (I used bedGraphToBigWig to convert my data, and ran percentile calculations on the bedGraph, which includes regions with coverage 0.)

I like the autoscaled data ranges, and I'd like to know how they are calculated so I use them in visualizations outside of IGV.

I'm using 2.3.94 in case there have been some recent changes.

Thank you,

Diya

[Diya]

I realized a mistake in my calculations. Just to confirm, is the autoscale set at 2nd - 98th percentile across the entire bigWig file? (And does this vary by file type?)

Thanks,

Diya