Increasing the number of significant figures from a cursor tag

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Mon, 09/23/2019 - 09:03 am

Hello, 

I have a macro that was written by a previous lab mate that inserts a tag with the x value when you have the cursor placed on the graph. This is a very useful macro, however, on a current data set I am analyzing, I realized it only gives sigfigs to the hundreths place, but I need to look at differences in peak position that are <0.01. So I am trying to modify this macro to include more sigfigs. I do not understand however how hcsr() function abstracts the x values and the documentation does not include anything on this topic. 

Any ideas would be very much appreciated. 

Thanks

Macro TagItX()
    variable cmPosition = hcsr(A)
    variable xPosition = xcsr(A)
    String LocValue = "\\Z14" + num2str(cmPosition)
    Tag /O=90 /F=0 /A=MB /X=0 /Y=10/L=1 /B=1 $CsrWave(A), xPosition, LocValue
EndMacro

instead of num2str, try using sprintf to insert output of hcsr() into the LocValue string in whatever format/precision you like

DisplayHelpTopic "sprintf"

 

September 23, 2019 at 10:32 am - Permalink

Have a look at: DisplayHelpTopic "num2str"

You probably want something like:

Macro TagItX()
    variable cmPosition = hcsr(A)
    variable xPosition = xcsr(A)
    String LocValue
    sprintf LocValue "\\Z14 %.9f", cmPosition
    Tag /O=90 /F=0 /A=MB /X=0 /Y=10/L=1 /B=1 $CsrWave(A), xPosition, LocValue
EndMacro

opps, too late!

September 23, 2019 at 10:40 am - Permalink

I may have been a few seconds quicker to post but, as usual, it was Christian that provided helpful working code.

September 23, 2019 at 02:40 pm - Permalink

well, no problem to be second after Tony.

After all it was him who introduced me to Igor, must have been in 2000 or so and IP3 ;-)

 

September 24, 2019 at 05:15 am - Permalink