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MATLAB saving as TDMS efficently

We're currently converting (automatically) csvs from another system into TDMS to match that outputted by our NI hardware.

 

The MATLAB "tdmswrite" works but the file sizes are huge. E.g. a 200MB csv ends up being 1000MB, which if you then save it through diadem ends up at <10MB.

 

Hence the built in MATLAB write is not that efficient. I've tried to use the dll method but that is WELL out of date and does not work anymore.

 

How can we save TDM/TDMS files from MATLAB at the same size efficiency as Diadem does?

 

Thanks!

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