Re: BOY FAQ: howto plot a live waveform record cartesian plot

[Peter Milne <peter.milne@d-tacq.com>]

Hi Chen

On 03/01/2012 06:25 PM, Chen, Xihui wrote:
> Hi Peter,
>
> You can use XY Graph widget in BOY. Set "Y PV" as your waveform PV
> and set "Concatenate Data" to false.
^^^^^^^^^^^^^^^^^^^^^^^^^^^
Yes, of course. That makes sense. At first there was this display that 
seemed to do nothing, then after a few minutes it morphed into a huge 
scrolling ..concatenation.. of all the data that had gone past.
Shoulda asked earlier, my waveform source is now c/o FEDEX.


> See /BOY
> Examples/Miscellaneous/ArraysOperation/PlotFirstNPointsExample.opi
Great, looking forward to trying this

Thank you!

/Peter

> Cheers, Xihui
>
> > -----Original Message----- From: Peter Milne
> > [mailto:pgm0044@gmail.com] On Behalf Of Peter Milne Sent: Thursday,
> > March 01, 2012 1:08 PM To: Tech-talk Cc: Chen, Xihui Subject: BOY
> > FAQ: howto plot a live waveform record cartesian plot
> >
> > Hi Chen
> >
> > Is there an example of this?. In a recent demo, I'd success
> > plotting a live scalar PV to a stripchart with CSS data browser,
> > but no joy in getting a live waveform record to plot (refresh
> > 1..10Hz, complete redraw each time, like a scope). Luckily for me
> > the MEDM cartesian plot still worked fine, but I'd far prefer to
> > have it all under CSS.
> >
> > If we have to create an an actual OPI/BOY display to do this, that
> > would be OK too, but an example to copy would be helpful.
> >
> > Thanks
> >
> > Peter
> >
> > -- Peter Milne			Peter.Milne@d-tacq.com D-TACQ Solutions Ltd
> > www.d-tacq.com

--
Peter Milne			Peter.Milne@d-tacq.com
D-TACQ Solutions Ltd		www.d-tacq.com