Experimental Physics and
Industrial Control System

Peter Milne <[email protected]> · Thu, 01 Mar 2012 18:46:10 +0000

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:[email protected]] 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			[email protected] D-TACQ Solutions Ltd
www.d-tacq.com

--
Peter Milne			[email protected]
D-TACQ Solutions Ltd		www.d-tacq.com

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System