On 07/04/2017 04:01 PM, [email protected] wrote:
> Hi,
>
> Is there a way in CSS of plotting data from the archive so that you can
> plot one PV against another; thus forming an X-Y Plot?
Yes, though it's bare bones and well hidden in a context sub-menu.
In the Data Browser prospective. In the Properties view. In the Traces
tab. Right click on a trace and look for "Export Samples", then "Post
Analyzer". You'll have to export both of the traces you want to compare.
> If so is there a way of embedding this into an OPI?
Not that I'm aware of.
> We have a stress rig which measures stress and strain; these are
> archived as PVs in our archive engine. We would like to recover these
> values out of the archive and plot one against another for a period of
> time. Is this something that has been done as part of CSS or a BOY OPI?
> We have done a similar thing for just Y vs time plots using the CSS data
> browser (although not in a BOY OPI) and we were wondering whether there
> is an extension to allow this form of plotting too.
Depending on how this plot will be used, you might be better off trying
to do this with a script instead of data browser GUI. Making a
correlation plot from traces with different time bases isn't trivial,
and there are multiple ways to do it.
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- Plotting X-Y Data from the archive in CSS John . Holt
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