Re: Script BOY IntensityGraph to show areaDetector output of variable size

[Phil Atkin <phil.atkin@pixelanalytics.co.uk>]

Perfect.  Thanks very much!

Phil

On 20/04/2016 18:04, Pearson, Matthew R. wrote:
> Click the ‘Rules’ value for the Intensity Widget, then click the ‘+’ icon.
> Enter a name for the rule, followed by selecting the actual property that the rule will change (eg. Data Width).
> In the ‘Input PVs’ list add the PV name (e.g.. $(P):ArraySize0_RBV) and make sure that the trigger is set to ‘Yes’. This will ensure the rule will run when the PV changes.
> Then in the ‘Expressions’ list, type in ‘pv0’ in the right field, then ‘true’ in the left field. Also make sure the ‘Output Expression’ is ticked.
>
> To verify the rule, click the ‘See Generated Script’ button. I get:
>
> importPackage(Packages.org.csstudio.opibuilder.scriptUtil);
> var pv0 = PVUtil.getDouble(pvs[0]);
> if(true)
> 	widget.setPropertyValue("data_width",pv0);
> else
> 	widget.setPropertyValue("data_width",2560);
>
>
> (where the 2560 is what I set the property to default to).
>
> When you have multiple input PVs, the variable names in the Expressions list are pv0, pv1, pv2, etc.
>
> Cheers,
> Matt
>
>
> > On Apr 20, 2016, at 12:04 PM, Phil Atkin <phil.atkin@pixelanalytics.co.uk> wrote:
> >
> > Thanks to both of you.
> > Could one of you give me a pointer on how to create such a rule?
> >
> > Thanks
> >
> > Phil
> >
> > On 20/04/2016 16:56, Pearson, Matthew R. wrote:
> > > Hi Phil,
> > >
> > > We do the same as Bruno mentions.
> > >
> > > Data Height (ArraySize1_RBV)
> > > Data Width (ArraySize0_RBV)
> > >
> > > where the PVs are from the StdArray plugin.
> > >
> > > In addition you’ll also need to have additional rules for setting the X and Y axis Min and Max values. These rules use the PVs from the detector driver that knows about binning and ROI selection:
> > >
> > > X Axis Min - (MinX_RBV)
> > > Y Axis Min - (MinY_RBV)
> > > X Axis Max (MinX_RBV + ArraySizeX_RBV)
> > > Y Axis Max (MinY_RBV + ArraySizeY_RBV)
> > >
> > > We also use a another rule that defines the maximum intensity (the Maximum property) based on a PV. Then we have a Scaled Slider widget to change the intensity.
> > >
> > > Cheers,
> > > Matt
> > >
> > >
> > > Data Acquisition and Control Engineer
> > > Spallation Neutron Source
> > > Oak Ridge National Lab
> > >
> > >
> > > > On Apr 20, 2016, at 9:26 AM, Bruno Martins <brunoseivam@gmail.com> wrote:
> > > >
> > > > Hi Phil,
> > > >
> > > > You can create two rules, for the data_width and data_height properties, that look at the $(P)ArraySize0_RBV and $(P)ArraySize1_RBV PV's
> > > >
> > > > HTH,
> > > >
> > > > Bruno
> > > >
> > > > On Wed, Apr 20, 2016 at 6:44 AM, Phil Atkin <phil.atkin@pixelanalytics.co.uk> wrote:
> > > > Thanks Gabriela,
> > > >
> > > > - but I guess my question was ambiguous.  If I understand correctly, your script adjusts the height of the IntensityGraph widget so that its aspect ratio matches the image.
> > > >
> > > > But the IntensityGraph will not display anything at all unless I set its Data Height and Data Width properties to match the attached array.  Do you have something to accomplish this?
> > > >
> > > > Also: I have no idea how to actually attach the code or make it run at an appropriate time.  Can you point me at documentation that describes this?
> > > >
> > > > Thanks
> > > >
> > > > Phil
> > > >
> > > >
> > > > On 20/04/2016 11:34, gabriele.salvato@cnr.it wrote:
> > > > this is the very simple python script that I use:
> > > >
> > > > from org.csstudio.opibuilder.scriptUtil import PVUtil
> > > >
> > > > imageWidget        = display.getWidget('Image')
> > > > imageXSizeWidget   = display.getWidget('X-Size')
> > > > imageYSizeWidget   = display.getWidget('Y-Size')
> > > >
> > > > try :
> > > >      imageXSizePV   = imageXSizeWidget.getPV()
> > > >      imageYSizePV   = imageYSizeWidget.getPV()
> > > >
> > > >      nImageRows    = PVUtil.getLong(imageYSizePV)
> > > >      nImageColumns = PVUtil.getLong(imageXSizePV)
> > > >
> > > >      imageWidget.setPropertyValue('graph_area_width', 512)
> > > >      imageWidget.setPropertyValue('graph_area_height', (512.0/nImageColumns)*nImageRows)
> > > >
> > > > except :
> > > >      pass
> > > >
> > > >
> > > >
> > > > Phil Atkin <phil.atkin@pixelanalytics.co.uk> ha scritto:
> > > >
> > > > Hi,
> > > >
> > > > I'm using BOY IntensityGraph to show a (stdArray) output image from an areaDetector driver/plugin.
> > > > The size of my array changes quite a bit.
> > > > Can someone tell me (in laborious detail if necessary, please) how to set up scripts or "embedded rules" on the IntensityGraph to cope with a variable-sized image?
> > > >
> > > > Thanks!
> > > >
> > > > Phil