Request: Molecule type cast/converter (any, core, Erlwood, Indigo, etc) for *multiple* columns

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I've been struggling a bit with conversion of strings to structures (mainly smiles) for viewing in Knime - when having a dynamic number of columns.

Tried using looping, but haven't managed so far (e.g. even when I managed to loop around the number of columns, the columns end up all in one column only). I am sure though there is a solution.

Even if you don't have dynamic number of columns, multiple ones mean combining multiple type cast nodes in a row. Doable of course, but slighly annoying.

What would be simpler - and thus a request for one or any of the nodes that handle structures, be it Molecule Type Case; Open Babel; ERL String to Molecule; Indigo, whoever thinks it is a good idea or has time & resources:

Add a column selection to the node, so that one can select multiple ones at once, use variables, etc (as in Column Auto Type Cast).

Thank you for reading.

 

2

Hi Docminus.

You need to finnish the Loop with a Loop End Column Append. 

Here is the workflow on the example server which does the same job. 011_FlowVarsAndLoops/011006_loopColumnsManipulateEach

cheers, Iris 

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Thanks.

Afterwards one is always the wiser.... :)

Though a column selection in those nodes would still be nice to have.