Changing Waveform into XY data

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Fri, 04/25/2014 - 01:52 pm

Hi,

I can't seem to find any information about this anywhere in the help file or the web forums. There's a portion of the help file that explains how to change XY data into a waveform. There's nothing that shows how to change a waveform into XY data.

I would like help with one of two things.

1. I would like to convert the x-values of a Waveform into it's own data set.
2. I would like to replace the x-values of one data set with the x-values of another.

Any help on this would be appreciated.
Quote:

I would like to convert the x-values of a Waveform into it's own data set.


Here is one way to do it:
Make/N=100 test
SetScale/P x, 0, .25, "s", test
Make/N=100 xtest
xtest = pnt2x(text,p)


In most cases this is not recommended and indicates you may be taking the wrong approach. To know if that is true in your case I would need to know what you are trying to accomplish.


I would like to replace the x-values of one data set with the x-values of another.


You can copy the X scaling of one wave to another using CopyScales.

April 25, 2014 at 02:21 pm - Permalink

Thanks for the quick reply. This works just fine.

Since you asked what I'm doing, I'm trying to do arithmetic with histograms. The new wave I created would have the result I wanted but not the x-scale. So I was just trying to copy the old scale onto the new one.

April 25, 2014 at 02:43 pm - Permalink

The Duplicate command will also duplicate the X scaling of a wave. That will perhaps help you with creating the copy of a wave and getting the same X scaling. Duplicate can also help with the problem of converting a Waveform to an XY Pair:
Duplicate test, testx
testx = x

Still two lines, just like HRodstein's answer, but perhaps a bit easier to type.

John Weeks
WaveMetrics, Inc.
support@wavemetrics.com

April 28, 2014 at 09:19 am - Permalink