Question: Fastq joiner and sequencing reads previously submitted to a quality based trimming
0
gravatar for anacrys7
3.6 years ago by
anacrys7 • 0
Portugal
anacrys7 • 0 wrote:

Hello!

I have a couple of doubts about Fastq joiner:

1) on the Fastq joiner instructions I see that the program will join the paired ends, but will exclude sequences that have lost their pair during quality check. Is there a way of keeping these lone sequences rather than ditching them? 

2) the sequences joining scheme seems to simply concatenate /1 and /2 seqs as they are: shouldn't /2 seqs be reverted? shouldn't they be separated by an N in the middle in the final output?

Input formats

Left-hand Read:

@HWI-EAS91_1_30788AAXX:7:21:1542:1758/1
GTCAATTGTACTGGTCAATACTAAAAGAATAGGATC
+HWI-EAS91_1_30788AAXX:7:21:1542:1758/1
hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh

Right-hand Read:

@HWI-EAS91_1_30788AAXX:7:21:1542:1758/2
GCTCCTAGCATCTGGAGTCTCTATCACCTGAGCCCA
+HWI-EAS91_1_30788AAXX:7:21:1542:1758/2
hhhhhhhhhhhhhhhhhhhhhhhh`hfhhVZSWehR

Output

A multiple-fastq file, for example:

@HWI-EAS91_1_30788AAXX:7:21:1542:1758
GTCAATTGTACTGGTCAATACTAAAAGAATAGGATCGCTCCTAGCATCTGGAGTCTCTATCACCTGAGCCCA
+HWI-EAS91_1_30788AAXX:7:21:1542:1758

 

Thank a lot by the help!

fastq joiner • 970 views
ADD COMMENT • link • modified 3.6 years ago by Anton Nekrutenko ♦ 1.7k • written 3.6 years ago by anacrys7 • 0
0
gravatar for Anton Nekrutenko
3.6 years ago by
Penn State
Anton Nekrutenko ♦ 1.7k wrote:

One of the assumptions made by the joiner is that the sequences are of the same length. Why are you trying to join sequences?

ADD COMMENT • link written 3.6 years ago by Anton Nekrutenko ♦ 1.7k
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