How to load wave from text file with two different delimiters

I would run the load process twice for each wave.  The one time to capture the level values and the second time to capture the data and then use the level values as a list to rename the waves.  For the levels, my approach would be capture the whole line as single string and then remove the ":LEVELS:" which leaves you with a semi-colon delisted string that is easy to handle as a list.

I would create a loop that goes over the waves and create a name "Level_"+stringfromlist(index, Levellist)

I might create a temp folder to hold the waves and then rename them and move them to a new folder and kill the files in temp folder and repeat as you cycle through all your data.

Andy

Depends on if this format is completely fixed or can vary... To make this flexible, I would use:

FReadLine [/N=n /ENCG=textEncoding /T=termcharStr ] refNum, stringVarName

in a loop and read each line separately. Once you hit line containing  :LEVELS:  (use Grepstring or stringMatch) you have the headers. Store that line in temp string. Keep reading until you reach :Data. Now you know the number of lines to skip in the loadwave. Then use the Loadwaves command you have and use default names (make sure they are available by deleting those if needed). Then rename the default named waves into what the names you have from header in simple loop. As far as I can say this is single pass procedure which is also dependent only on use of :LEVELS: and :DATA keywords, it is flexible if number of header lines changes... You could make it simpler by relying on reading third line only and skipping 4 header lines, if the format is fixed. 

I have mostly written a file loader for your file but I can't finish it because text copied from your sample data above is not a reliable representation of the data in your file (e.g., tabs may get turned into spaces).

Please attach a zip archive of a sample data file.

Also let me know what version of Igor you are using.

I really appreciate the help. Attached is an unedited sample data file. You'll see that :LEVELS: is on line 9, and that the wave data starts on line 11 (I simplified the text for my post, but maybe should not have done that). I'm currently using version 9.00 of Igor Pro.

I have attached a file loader for this file.

You should probably put this in your "Igor Procedures" folder so it is always available. Execute this for details:

DisplayHelpTopic "Special Folders"

Thank you. This is a huge help, I really appreciate it. I put the file loader in "Igor Procedures" and it works perfectly--this will be my most used file loader for the foreseeable future. Cheers!