Hi all,

I was wondering if there is a way to put conditional statements in a Galaxy workflow.


This would be useful, for example, in the case of a workflow that has an optional advanced option that the user can click. This advanced option would add some extra steps to the data processing.

Another example of how this could be useful is if inside a workflow, the data needs to be processed differently based on the results of previous workflow steps. Say, you have a worflow that takes some sequences, and calculate their average length. Using a conditional statement, the workflow would put the data through DeBruijn assembler if the reads are small, but through a traditional Overlap-Layout-Consensus assembler if the reads are long.

Are conditional statements possible in Galaxy workflows and I just don't know how to use them?

Best,

Florent
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