Data Preparation Procedure: Can I rename my files?

[JKSH]

I'm trying to make my own DPP (https://www.ni.com/docs/en-US/bundle/systemlink/page/data-preparation.html)

I'd like to set the output filename based on some information extracted from the file itself -- For example, converting XYZ.tdms to <MINION_ID>_XYZ.tdms, where <MINION_ID> is embedded in the file as a file property. Is this possible?

[Brad_Turpin]

Hi JKSH,

As of TDM Server 2019 (SystemLink TDM 19.5), this is not possible using the built-in file conversion architecture of the Data Preprocessor (Data Preparation module).  There is information in the oContext object in the V&V step which you can use to read out the expected file path and file name, but changing those values of those properties does not currently result in a change in the output location or file name.  You can instead manually convert the file with DataFileSave() and then use the oContext object to register a V&V failure, which will abort the action of the built-in file conversion architecture.  It's clunky, but I've gotten it to work on one of my projects, so I know it's possible.  Hopefully this will get easier in subsequent releases.  I did mention this to R&D about a month ago.

Brad Turpin

Senior Technical Support Engineer

National Instruments

[Ralf11]

You also can use MoveFile