How to use the '\b' backspace code to remove a trailing comma

[cewboeing]

I am using LabVIEW 2009 on a PC running Windows XP.  I am trying to develop a section of a program that will take a 2-dimensional array of numeric data, convert the numeric data to strings, and for each row insert commas between each string that represents a numeric data, and then write this as a comma-separated-variable data format to a file.  Each column in the original array will end up as a separate line in the target text file.

Please see the attached picture of the part of my LabVIEW program for doing the above operation (the final write-to-file operations are not shown).

The problem that I am having is that I would like to delete the final comma at the end of the string for each line, just before the CR-LF.  I am using the \b code for backspace in the string concatenate function, however this does not appear to be working.  Here is an example output that I get:

2.500000E+0,2.500000E+0,2.500000E+0,2.500000E+0,2.500000E+0,2.500000E+0,

I stuffed the entire array with the value of 2.5 for each element.  Notice that the final comma was not removed, but a strange character (the box) was added at the end.  The CR-LF did work.  If I remove the \b from this program, the box character goes away.

Any suggestions?  Thanks.

[altenbach]

How about using "array to spreadsheet string" with comma as delimiter? One step!

(Your \b is just another character added to the string, it does not perform any editing operation)

[altenbach]

Also, if all you just need to do is write the result to a file, use write to spreadsheet file instead with comma as delimiter. Nothing else needed.