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<== Date ==> <== Thread ==>

Subject: Re: CSS xy graph question
From: Jörn Dreyer <[email protected]>
To: [email protected]
Date: Wed, 18 Apr 2018 13:57:54 +0200
Hi Mark,

yes the NORD field is set correctly:

epics> dbpr XXX:cam1:WaveLengthArray_RBV
ASG:                BUSY: 0             DESC: Array of wavelength per bin       
DISA: 0             DISP: 0             DISV: 1             
NAME: XXX:cam1:WaveLengthArray_RBV                   NORD: 4000          
SEVR: NO_ALARM      STAT: NO_ALARM      TPRO: 0             VAL: (nil)

epics> dbpr XXX:image1:ArrayData
ASG:                BUSY: 0             DESC:               DISA: 0             
DISP: 0             DISV: 1             NAME: XXX:image1:ArrayData       
NORD: 2048          SEVR: NO_ALARM      STAT: NO_ALARM      TPRO: 0             
VAL: (nil)

If I do a caget it returns:

$> caget HIBEF:XFEL:cam1:WaveLengthArray_RBV
HIBEF:XFEL:cam1:WaveLengthArray_RBV 4000 340.32 340.702 341.084 341.467 
341.849 342.231 342.614 342.996 343.378 343.76 344.142 344.524 344.906 345.288 
345.669 ....

So that part works. If I add this PV as "X PV" to the XY graph widget, CSS has 
a problem and disconnects from the IOC nand reconnects to it aftera short 
moment.

Regards,

Jörn

Am Mittwoch, 18. April 2018, 13:35:55 CEST schrieb Mark Rivers:
> Has the NORD field of that waveform record been set correctly?  What happens
> if you do caget on it?
> 
> Mark
> 
> 
> ________________________________
> From: [email protected] <[email protected]> on
> behalf of Jörn Dreyer <[email protected]> Sent: Wednesday, April 18, 2018
> 4:31 AM
> To: [email protected]
> Subject: CSS xy graph question
> 
> Hi,
> 
> I have a question regarding the XY graph widget in CS Studio.
> I want to define the x axis labels based on an array read from my
> areadetector driver. The PV is of type waveform with 4000 elements of type
> double and contains one value per bin.  If I put this record as "X PV", the
> widget shows an error and the message that the value of this PV is nil.
> 
> The reason for this is, that the driver is universal for a class of
> spectrometers where every pixel in the sensor stands for a certain
> wavelength. Different devices have different ranges of wavelength they
> cover.
> Of course I could hard code the range, but then one needs to generate a
> separate OPI file for each type of device.
> 
> What is the correct type for the PV that defines the x axis?
> 
> Regards,
> 
> Jörn Dreyer


-- 
Dr. Joern Dreyer
HIBEF DAQ + Controls
Institut für Strahlenphysik
Helmholtz-Zentrum Dresden - Rossendorf e.V
Abt. FWKX                Tel: +49 351 260 3263
                                   FAX: +49 351 260 3700
01314 Dresden        eMail: [email protected]

Helmholtz-Zentrum Dresden - Rossendorf e.V (HZDR)
Bautzner Landstraße 400, 01328 Dresden
Vorstand: Prof. Dr. Dr. h. c. Roland Sauerbrey, Dr. Ulrich Breuer
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Replies:
RE: CSS xy graph question Mark Rivers
References:
CSS xy graph question Jörn Dreyer
Re: CSS xy graph question Mark Rivers

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