Plotting only every Nth point

Share icon

Wed, 11/19/2008 - 12:19 pm

I'm plotting data as yWave vs. xWave. There are simply too many points displayed. I'd like to only plot every, say, 10th point. But I don't want to delete any of the data.

Also, I use several different yWaves---something like yWave1, yWave2, etc---plotted against the same xWave, so I don't want to have to change the values of xWave.

Thanks,
Kevin
Execute the following from the Igor command line:
DisplayHelpTopic "Subrange Display Syntax"


The short answer is that yes, you can do exactly what you want, by including the inc value in the range specification.

November 19, 2008 at 12:52 pm - Permalink

And furthermore, you can do it right in the New Graph or Append To Graph dialogs.

If you have a button that says "More Choices" click it.

Then select your X and Y waves and click Add.

Now you can edit the ranges in the list at the bottom of the dialog.

John Weeks
WaveMetrics, Inc.
support@wavemetrics.com

November 19, 2008 at 01:14 pm - Permalink