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<== Date ==> <== Thread ==>

Subject: EDM XY Graph Trace N Field
From: Alan Greer <[email protected]>
To: [email protected]
Date: Wed, 29 Jan 2014 09:11:41 +0000
Hi,

I'm using EDM version 1-12-89. I'm plotting a Waveform using the X-Y graph widget with the following trace properties:

X - Left blank for a chronological plot
Y - My waveform PV $(P)WAVEFORM
N - The NORD field of my waveform $(P)WAVEFORM.NORD

The waveform record has NELM = 1000 but it is not always full. My understanding from reading the help is that the X-Y graph should look at the N field and use the value to set the number of points to plot. However, whenever I open the screen I get messages like

Cannot find tag: nPv, near line 299

and the plot always plots 1000 points, even if the value of NORD is 500 (or anything less than 1000).

Has anyone else successfully used the N field of the X-Y graph widget?

Thanks, Alan


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