Re: [Cs-studio-users] is XY plot limited to 16K points?

[Peter M. <pet...@d-...>]

Hi Will

Got it now, thank you.
Set buffer size max value at design time works.

Cheers

Peter


On 27/10/14 09:43, wil...@di... wrote:
> Hi,
>
> I can't actually find the setting you mention:
>
>> XYPlot | Configure Graph | Axes | Sample(X) | Maximum=66000
> Nevertheless, are you creating your own OPI screen?  In OPI Editor perspective, one of the many properties of the XYGraph widget is
>
> Trace 0 -> Buffer Size
> Trace 1 -> Buffer Size
> ...
>
> If this value isn't big enough, then all your points won't be plotted.
>
> Cheers,
> Will

>
> ________________________________________
> From: Peter Milne [pet...@d-...]
> Sent: 25 October 2014 11:37
> To: cs-...@li...
> Subject: [Cs-studio-users] is XY plot limited to 16K points?
>
> Hello CSS
>
> A fault monitor application plots a waveform "scope plot" using a
> VDoubleArray
> (waveform record converted to volts).
>
> It works really well up to 16K points, but refuses to plot more points
> when available.
>
> eg with a waveform length 66000 points, I've set
> EPICS_CA_MAX_ARRAY_BYTES=500000 at the IOC end and
> and
> CSS Preferences | CSS-core | EPICS | max_array_bytes=500000
>
> Clearly the MAX_ARRAY thing is OK, because the XY plot shows normal PV
> (no "Barbie-pink"), and actually it's plotting the first 16K points as
> normal.
>
>
>
> XYPlot | PVINFO knows the length too:
> Value: VFloatArray[[-0.00224333256483078, -0.0022397562861442566,
> -0.0021968409419059753, ...], size 66000, 2014/10/25 11:24:24.795]
>
> Regular CA prints the right length:
> acq1001_048> caget  acq1001_048:1:AI:TW:09:V.VALA | wc
>           1     66002    785555
> Plotting this output (eg with octave) shows data all the way to the end..
>
>
> If there is a plot limit, is it possible to extend it?
>
> I appreciate that attempting to plot multiple channels x many thousand
> points may overload the computer and make it slow, but the tool should
> at least try to do it, or to state what the limit is.
>
> CSS version:
> Css    3.2.16.20140409    org.csstudio.basic.epics.product.product
>
>
> Thanks a lot
>
>
> Peter
>
> --
> Peter Milne
> www.d-tacq.com
>
>
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-- 
Peter Milne
Director of Sales
www.d-tacq.com