spreadsheet waveform

[scarface]

hi,

i am sing a DAC card to output an AO and then read 8 AI (voltage against time).i have managed to show both the AO generated and the 8 AIs on a waveform graph.however,

i can't figure out how to save this data as an ASCII file so that i have 9 Y values (the one AO and the 8 AI voltage values) for every time value.i have tried exporting the file to a spreadsheet and saving the data as a text file, but there seems to be a problem connecting up the array terminals for these functions from the waveform that is generated.can anyone help with this?

stephen

[mfitzsimons]

Use LabVIEW's built in Write To Measurement File Express VI located in the file pallet.  It will save the file as text (AKA ASCII) in LVM format.  Simple format that works well for storing and restoring data.  I am not a big fan of Express VIs but this one works well.

[scarface]

hi,

how do i then read the .lvm file after the program has finnished?

[AnalogKid2DigitalMan]

lvm files are ascii text- you can view and edit it in Word, Excel, Notepad, etc

[scarface]

hi mathew,

ignore that last comment, i realise its just a plain text file which i can read in any text based software.thanks for the help, the vi works a treat.i was just wondering, in terms of programming how i could split up the individual components of the array from my measurements.ie. split up the the 10 components (timestamp starting from t=0, AO and 8AI) of the array and put them into a table.

thanks again,

stephen

[scarface]

...the table would be in the program, so that i can keep track of the each individual AI/AO wrt time throughout the program.

thanks again,

stephen

[mfitzsimons]

You are welcome.  FYI: Data is viewed easily in Excel if less than 64.000 lines.