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change the minimual length requrement to 36
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Haifeng Chen committed Nov 24, 2015
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1. Why does WALT get much lower mapping rate (mapping effiency) compared to other bisulfite mappers?

By default, WALT ignores reads shorter than 39. If you get lower mapping rate, please go to mapstats file and check the percentage of reads that are shorter than 39. If a large portion of reads are shorter than 39, I suggest you use WALT seed pattern 7.
By default, WALT ignores reads shorter than 36. If you get lower mapping rate, please go to mapstats file and check the percentage of reads that are shorter than 36. If a large portion of reads are shorter than 36, I suggest you use WALT seed pattern 7.

(1) Open walt/src/walt/Makefile, modify “-D SEEDPATTERN3" to " -D SEEDPATTERN7"

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