EPICS Home

Experimental Physics and Industrial Control System


 
1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  <20122013  2014  2015  2016  2017  2018  2019  2020  Index 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  <20122013  2014  2015  2016  2017  2018  2019  2020 
<== Date ==> <== Thread ==>

Subject: RE: waveform display
From: "Chen, Xihui" <chenx1@ornl.gov>
To: John Dobbins <john.dobbins@cornell.edu>, EPICS Tech-Talk <tech-talk@aps.anl.gov>
Date: Thu, 26 Jul 2012 13:06:19 -0400
Hi John,

In BOY XY Graph widget, you just need to set trace property "Buffer Size" to m*N and "Concatenate Data" to yes. Please let me know if it works for you.

Best regards,
Xihui



> -----Original Message-----
> From: John Dobbins [mailto:john.dobbins@cornell.edu]
> Sent: Thursday, July 26, 2012 12:14 PM
> To: EPICS Tech-Talk
> Subject: waveform display
> 
> All,
> 
> I have a waveform record which holds the latest N samples of a
> transient. It is periodically updated. I would like to display the last
> m readings of this waveform as a single plot, i.e. m*N points, to
> recreate a longer time record. With each update the display would
> discard the oldest N values and add the newest N values.
> 
> I stumbled around in EDM and CSS/BOY and failed to get the behavior I
> wanted but may well have missed something. I could accomplish this in
> the IOC (creating a long waveform and displaying that) but then I would
> be retransmitting data unnecessarily, so I was wondering if this is
> easily done in a display tool.
> 
> In CSS I could write a javascript which creates a local PV that
> implements this behavior?
> 
> Other suggestions?
> 
> Thanks and regards,
> 
> John Dobbins
> Cornell Laboratory for Accelerator-based Sciences and Education Cornell
> University Ithaca, NY
> 
> 



Replies:
Re: waveform display John Dobbins
Re: waveform display John Dobbins
References:
waveform display John Dobbins

Navigate by Date:
Prev: RE: asynPortDriver Mark Rivers
Next: Re: waveform display John Dobbins
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  <20122013  2014  2015  2016  2017  2018  2019  2020 
Navigate by Thread:
Prev: waveform display John Dobbins
Next: Re: waveform display John Dobbins
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  <20122013  2014  2015  2016  2017  2018  2019  2020