Significant Digits in data file

[glskinner]

Is there a way to change the significant digits in an LVM data file? I'm using "Write to measurements file"

[PaulG.]

Depends. What do your "signals" data look like?

[glskinner]

Signals? They're waveforms, voltages...

[ChrissyC]

Hi,

I'd use the "Write to Sreadsheet File" VI instead. It'll write your results to a text file and you can specify the format.

-CC

[glskinner]

I'm not sure I can do it with "write to spreadsheet." It doesn't have a "Saving Data" boolean. A lot of my program is dependent on that. Is there any other way to change the significant digits in a "write to measurements file"?

[RavensFan]

Put the Write to Spreadsheet File function inside a case structure.

There is no easy way to change the number of digits using the Express VI.  You'd have to convert the Express VI to a regular subVI through the Open Front Panel menu option.  Then you'd have to drill down quite a few levels of subVI's and find where the format string is and change it.  Then you'd have to save that entire hierarchy of subVI's under new names.  I don't recommend any of this.

[JÞB · Accepted solution]

Caution! This will change files in vi.lib. I suggest you rename and move the affeted vis (do not blame me if other things break)

Convert the express vi to a vi

Drill to here in the heirarchy

Change this constant format specifier

[glskinner]

Jeff, I think I tried this method before...exactly what do I put in the string to output only 3 significant digits?

[JÞB]

%.3g

[glskinner]

does the semi colon stay?