Hello Daniel, Examining existing tools that have multiple/optional inputs can be a good way to see how this is done. One example is the tool: "NGS: QC and manipulation -> Manipulate FASTQ". The 'Manipulate FASTQ' tool source is here: http://bitbucket.org/galaxy/galaxy-central/src/e58a87c91bc4/tools/fastq/ fastq_manipulation.py fastq_manipulation.xml The tool tag set is defined in this wiki; http://wiki.g2.bx.psu.edu/Admin/Tools/Tool%20Config%20Syntax See <repeat>, <conditional>, and <when> for more details and examples. Questions about tools are best sent to the galaxy-dev@bx.psu.edu mailing list (the galaxy-user list is primarily for questions about data/tools usages on the main public instance). I am going to forward your question over there so that the development community can add to my reply in case they have a simpler way of doing this or other advice. Best, Jen Galaxy team On 3/5/12 7:32 AM, Daniel Sobral wrote:
Hi,
I wanted to build a workflow where the first step would be a tool that can have a variable number of inputs (e.g. a series). It seems that I need to predefine apriori the number of inputs to give to the tool.
Is there a way to define the number of inputs at runtime? E.g. a series-like input?
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