TDMS get position

[EEOMARK]

Is there a way to get the current TDMS position? something like the "Get File Position.vi" VI but for TDMS files.

I have a large data file, and I want a way to jump to specified percentage of the file and read it, for ex 30%. I'm thinking to move to the end of the file and get its position's offset, then use that # to determain the 30% position.

[Joe_Guo · Accepted solution]

the channel property contains the # of elements for that channel:

NI_ChannelLength

You can use it to calculate the starting % and use it to get a fixed number of data points.

TDMS file is a structured file.  A random offset most likely is not a valid position for a channel.

Joe

[EEOMARK]

Thanks Joe, this works for me.