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| <== Date ==> | <== Thread ==> |
|---|
| Subject: | Re: CSS X-Y Graph |
| From: | Michael Davidsaver <[email protected]> |
| To: | [email protected] |
| Date: | Tue, 21 Feb 2012 18:48:06 -0500 |
Hello John,I too have had trouble doing this. I was able to setup a rule to set the buffer size from the NORD field of a waveform record. The result was that, when the size was reduced, the start of the waveform was removed instead of the end. So not very useful.
In the end, as this data was for display only, I "fixed" this by padding the arrays by repeating the last value. This at least produces the correct visual effect.
I would welcome a better solution. Michael On 2/21/2012 4:45 PM, John Dobbins wrote:
All, I am trying to create an X-Y graph for displaying a waveform which may change in length. A Tech-Talk thread from June 2010 http://www.aps.anl.gov/epics/tech-talk/2010/msg00740.php suggests to put a PV into "Buffer Size" . However I am trying to do that now (CSS 3.1) and find I can only put an integer into this field, not a PV. Taking a step back, is there a recommended approach for displaying a waveform which may vary in size. I would like the plot x scale to automatically adjust to the new waveform length. Thanks, John Dobbins Cornell University