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Tool for detecting valleys in Chip-seq like data?

Hello,

We would like to know about the tools used in detecting valleys in Chip-seq like data. Can the tools that detect peaks also detect valleys? Or, are there specific tools for valley detection?

Best,
-Kaivan

ngs chip-seq

How do you distinguish valleys from lack of signal/sequencing depth?

Also: regions which can not be mapped using reads of length X.

Thank you all. I'll check the scipy tool and the paper.

1 answer

If you are comfortable with python, scipy has a find_peaks function you can use. This could be pretty easily adapted to your situation by multiplying your signal value by -1 to flip the data signal, then finding the peaks of the new signal.

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