mwfilter removes unwanted (noisy) data from mass spectrometry output in proteomics. It reads an input file with a list of experimental molecular weights and writes the same data to an output file but with unwanted (noisy) data removed, at a specified ppm tolerance. Optionally the deleted molecular weights are shown. It removes those molecular weights which are:
The last two operations can be done as most peaks are reported in both modified and unmodified forms. Removal of modified peaks aids in database searching for protein identification.
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The input file is a simple list of the experimental molecular weights.
There should be one weight per line.
Comments in the data file start with a '#' character in the first column.
Blank lines are ignored.