+ "help_text": "Defines the minimum read length that is required for reads after merging to be considered for downstream analysis after read merging. Default is `30`.\n\nNote that when you have a large percentage of very short reads in your library (< 20 bp) - such as retrieved in single-stranded library protocols - that performing read length filtering at this step is not _always_ reliable for correct endogenous DNA calculation. When you have very few reads passing this length filter, it will artificially inflate your 'endogenous DNA' value by creating a very small denominator. \n\nIf you notice you have ultra short reads (< 20 bp), it is recommended to set this parameter to 0, and use `--bam_filter_minreadlength` instead, to filter out 'un-usable' short reads after mapping. A caveat, however, is that this will cause a very large increase in computational run time, due to all reads in the library will be being mapped.\n\n> Modifies AdapterRemoval parameter: `--minlength`\n"
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