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#nextflow

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nf-core<p>Pipeline release! nf-core/rnavar v1.2.0 - nf-core/rnavar 1.2.0 - Black Bebop!</p><p>Please see the changelog: <a href="https://github.com/nf-core/rnavar/releases/tag/1.2.0" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">github.com/nf-core/rnavar/rele</span><span class="invisible">ases/tag/1.2.0</span></a></p><p><a href="https://mstdn.science/tags/gatk4" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>gatk4</span></a> <a href="https://mstdn.science/tags/rna" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>rna</span></a> <a href="https://mstdn.science/tags/rnaseq" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>rnaseq</span></a> <a href="https://mstdn.science/tags/variantcalling" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>variantcalling</span></a> <a href="https://mstdn.science/tags/worflow" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>worflow</span></a> <a href="https://mstdn.science/tags/nfcore" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>nfcore</span></a> <a href="https://mstdn.science/tags/openscience" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>openscience</span></a> <a href="https://mstdn.science/tags/nextflow" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>nextflow</span></a> <a href="https://mstdn.science/tags/bioinformatics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>bioinformatics</span></a></p>

how to use #nextflow "multiMap' to transform a channel if the 'input' of an existing module doesn't fit your needs.

eg: you want

tuple val(meta), path(bam),path(bed)

while the module was designed the following way:

tuple val(meta1), path(bed)
tuple val(meta2), path(bam)

gist.github.com/lindenb/fbd76e

thanks a lot @mbp for the tip !

Gistusing nextflow multiMap to split a stream so the input can fit the design of an existing module.using nextflow multiMap to split a stream so the input can fit the design of an existing module. - multiMap.nf

1/🧵 Ok, so I finally figured out the interesting (i.e. painful) error I’ve been chasing in my #Nextflow genomic mapping pipeline the past few days.
Basically, I’ve got hundreds of bwa mem mapping jobs running as separate processes in Docker containers, grouped on large AWS EC2 instances. Seemingly randomly some samples would fail during the subsequent mark duplicates process due to issues with the read group (@RG) headers.
#bioinformatics #genomics