append to file

[Beaton]

I want to be able to append waveforms to a file as I am writing, as i can do with write an excel file but, I don't want an excel file I would much rather a tdms, or binary.

I have tried the append to file in the write measurement express vi but it just adds the waveform to the end of the previous waveform. I woud rather if it took thee 1d array input and added to  a 2d array file.

Am I asking to much, or not trying hard enough?

thanks

[Xaq]

Beaton-

In order to write waveforms to a TDMS file as a new waveform instaed of appending to an existing waveform, you will need to get a little more in depth than the express VI and start interacting with teh TDMS VI's directly. Take a look at some of the TDMS shipping examples (just search the example finder for TDMS), specifically the Write Channel Groups (TDMS).vi example. You simply need to write the waveform under a different group or channel name to have it stored as a seperate waveform.

Xaq