Adding Data to Exisiting Data File

[jdionne]

I am trying to find out if there is any way to write data onto an existing data file as a new line. I currently write one line of data at a time, reposition my test set-up and then re-run the same test. Instead of writing a new file each time I run my test and copy and pasting them together later on, I was wondering if there is a way to open an existing file, read the data that exists and then add a new line of data while keeping the old data. If anyone has advice or has a quick solution, please let me know. Thanks

[jdionne]

The way that I am writing to a file is "Write to Spreadsheet file". I am using LabVIEW 8.0 if there are any questions with the version.

[Dennis_Knutson]

With Write to Spreadsheet file, do you see the input called 'append to file? (new file:F)'? Just wire a true constant to it. If you are not already doing it, go to the help menu and select 'Show context Help'. This will pop-up a help window for each function as you move your mouse over. You'd be surprised at the amount of information the built-in help system has.

[jdionne]

Dennis,

I'll check that out, thanks

[craigc]

or you can use the long way round which works with most filetypes.  You may or may not need the carriage return.

Craig

Message Edited by craigc on 02-29-2008 10:52 AM

Message Edited by craigc on 02-29-2008 10:52 AM