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Filter reads is only available for unaligned reads of FASTQ format. Select the Unaligned Reads data node then select Filter reads from the Pre-alignment tools section on the menu.

There are two options to filter reads: Subsample reads and Filter by read length

To Subsample reads, specify how many reads you want to keep for every nth reads. For example: if the user specifies to "Keep one read for every 10 reads" (Figure 1), this means that for every 10 reads, the program will keep only 1 read. This is equivalent to keeping 10% of the data. 

Numbered figure captions
SubtitleTextBy default, Subsample reads subsets of subsample raw data by keeping one read for every 10 reads
AnchorNamesubsample-reads

To Filter by read length, set the read length limits by choosing the minimum and maximum read length(s) to keep


Numbered figure captions
SubtitleTextFilter by read length(s) by setting the parameters for minimum and maximum read length
AnchorNamesubsample-reads

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