[Paraview] Insert text source into view in a script
M. Nawijn
nawijn at gmail.com
Thu Jul 16 14:31:38 EDT 2009
Thanks a lot! I will recompile and try it.
Marco
On Thu, Jul 16, 2009 at 6:07 PM, pat marion<pat.marion at kitware.com> wrote:
> I committed a fix to cvs. The problem was that
> ScalarBarWidgetRepresentation proxy does not have an Input property,
> so a runtime error was thrown when servermanager.GetRepresentation()
> tried to read the property value. I added a try/except.
>
> By the way, scalar bars can be created now through the paraview.simple
> module if you have the latest paraview:
>
>>>> help(CreateScalarBar)
> Help on function CreateScalarBar in module paraview.simple:
>
> CreateScalarBar(**params)
> Create and return a scalar bar widget. The returned widget may
> be added to a render view by appending it to the view's representations
> The widget must have a valid lookup table before it is added to a view.
> It is possible to pass the lookup table (and other properties) as arguments
> to this method:
>
> lt = MakeBlueToRedLt(3.5, 7.5)
> bar = CreateScalarBar(LookupTable=lt, Title="Velocity")
> GetRenderView().Representations.append(bar)
>
> By default the returned widget is selectable and resizable.
>
>
> Committed patch:
>
> RCS file: /cvsroot/ParaView3/ParaView3/Utilities/VTKPythonWrapping/paraview/servermanager.py,v
> retrieving revision 1.60
> diff -u -3 -r1.60 servermanager.py
> --- servermanager.py 30 Jun 2009 15:50:25 -0000 1.60
> +++ servermanager.py 16 Jul 2009 15:56:00 -0000
> @@ -1986,8 +1986,9 @@
>
> def GetRepresentation(aProxy, view):
> for rep in view.Representations:
> - if rep.Input == aProxy:
> - return rep
> + try: isRep = rep.Input == aProxy
> + except: isRep = False
> + if isRep: return rep
> return None
>
> def CreateRepresentation(aProxy, view, **extraArgs):
>
>
>
> Pat
>
> On Thu, Jul 16, 2009 at 10:34 AM, Utkarsh Ayachit
> <utkarsh.ayachit at kitware.com> wrote:
>>
>> Marco,
>>
>> Looks like Pat ran into this issue recently as well. He's investigating it.
>>
>> Utkarsh
>>
>> On Thu, Jul 16, 2009 at 5:12 AM, M. Nawijn<nawijn at gmail.com> wrote:
>> > I just found out the offending line that gives me the problem.
>> > Given the following code:
>> >
>> > from paraview.simple import *
>> >
>> > lt = MakeBlueToRedLT(-1.0, 1.0)
>> >
>> > bar = servermanager.rendering.ScalarBarWidgetRepresentation()
>> > bar.LookupTable = lt
>> > bar.LabelColor = [0.0, 1.0, 0.0]
>> > bar.Title = r'W [mm]'
>> > bar.TitleColor = [0.0, 1.0, 0.0]
>> > bar.LabelFontSize = 14
>> > bar.AspectRatio = 15.0
>> > bar.AutomaticLabelFormat = 0
>> >
>> > reader = XMLUnstructuredGridReader(FileName='disp-stage-%d.vtu' % 17)
>> >
>> > Show()
>> > Render()
>> >
>> > #UpdatePipeline()
>> >
>> > view = GetActiveView()
>> > view.Background = [0,0,0]
>> > ResetCamera(view)
>> > view.UseOffscreenRenderingForScreenshots = 0
>> >
>> > dp = GetDisplayProperties()
>> > dp.ColorArrayName = 'W'
>> >
>> > rep = GetRepresentation()
>> > rep.LookupTable = lt
>> >
>> > view.Representations.append(bar)
>> >
>> > # Don't know how to get this into the view
>> > text = Text()
>> > text.Text = "Hello"
>> >
>> > Show()
>> > Render()
>> >
>> > WriteImage('test.png')
>> >
>> > The code fails to add the text if I have the following line enabled:
>> >
>> > view.Representations.append(bar)
>> >
>> > If I uncomment this line, the text is added to the view as expected.
>> > Does anybody have a clue why this is?
>> >
>> > I added the traceback below:
>> >
>> > vtkFileSeriesReader : [ ...........]
>> > vtkPVGeometryFilter : [ ...........]
>> > vtkPVCacheKeeper : [ ...........]
>> > vtkPainterPolyDataMapper : [ ...........]
>> > vtkPainterPolyDataMapper : [ ...........]
>> > vtkPainterPolyDataMapper : [ ...........]
>> > Traceback (most recent call last):
>> > File "test3.py", line 42, in <module>
>> > Show()
>> > File "/home/nawijn/scratch/paraview-bin/Utilities/VTKPythonWrapping/paraview/simple.py",
>> > line 112, in Show
>> > rep = GetDisplayProperties(proxy, view)
>> > File "/home/nawijn/scratch/paraview-bin/Utilities/VTKPythonWrapping/paraview/simple.py",
>> > line 101, in GetDisplayProperties
>> > return GetRepresentation(proxy, view)
>> > File "/home/nawijn/scratch/paraview-bin/Utilities/VTKPythonWrapping/paraview/simple.py",
>> > line 90, in GetRepresentation
>> > rep = servermanager.GetRepresentation(proxy, view)
>> > File "/home/nawijn/scratch/paraview-bin/Utilities/VTKPythonWrapping/paraview/servermanager.py",
>> > line 1989, in GetRepresentation
>> > if rep.Input == aProxy:
>> > File "/home/nawijn/scratch/paraview-bin/Utilities/VTKPythonWrapping/paraview/servermanager.py",
>> > line 357, in __getattr__
>> > return getattr(self.SMProxy, name)
>> > AttributeError: Input
>> >
>> > Kind regards,
>> >
>> > Marco
>> >
>> >
>> >
>> > On Wed, Jul 15, 2009 at 10:33 PM, M. Nawijn<nawijn at gmail.com> wrote:
>> >> The script works. Somehow it seems like it does not work in
>> >> combination with my reader.
>> >>
>> >> Many thanks for your help. I have to go now, but I hope you have another idea.
>> >>
>> >> Kind regards,
>> >>
>> >> Marco
>> >>
>> >> On Wed, Jul 15, 2009 at 10:27 PM, Utkarsh
>> >> Ayachit<utkarsh.ayachit at kitware.com> wrote:
>> >>> Oops correction, I had a typo in the script:
>> >>> #=======================
>> >>> from paraview.simple import *
>> >>> Sphere()
>> >>> Show()
>> >>> Render()
>> >>>
>> >>> t = Text()
>> >>> t.Text = "Hello World"
>> >>> Show()
>> >>> Render()
>> >>> #=======================
>> >>>
>> >>>
>> >>>
>> >>> On Wed, Jul 15, 2009 at 4:25 PM, Utkarsh
>> >>> Ayachit<utkarsh.ayachit at kitware.com> wrote:
>> >>>> Does the following script work:
>> >>>> #=======================
>> >>>> from paraview.simple import *
>> >>>> Sphere()
>> >>>> Show()
>> >>>> Render()
>> >>>>
>> >>>> t = Text()
>> >>>> t.Text = "Hello World"
>> >>>> t.Show()
>> >>>> Render()
>> >>>> #=======================
>> >>>>
>> >>>> Utkarsh
>> >>>>
>> >>>>
>> >>>> On Wed, Jul 15, 2009 at 4:23 PM, M. Nawijn<nawijn at gmail.com> wrote:
>> >>>>> Hello Utkarsh,
>> >>>>>
>> >>>>> Thank you for the fast response. I tried this already before posting
>> >>>>> my question to the mailing list, however, when I inserted the Show(),
>> >>>>> I get the following error:
>> >>>>>
>> >>>>> vtkFileSeriesReader : [ ...........]
>> >>>>> vtkPainterPolyDataMapper : [ ...........]
>> >>>>> vtkPainterPolyDataMapper : [ ...........]
>> >>>>> Traceback (most recent call last):
>> >>>>> File "test3.py", line 39, in <module>
>> >>>>> Show()
>> >>>>> File "/home/nawijn/scratch/paraview-bin/Utilities/VTKPythonWrapping/paraview/simple.py",
>> >>>>> line 112, in Show
>> >>>>> rep = GetDisplayProperties(proxy, view)
>> >>>>> File "/home/nawijn/scratch/paraview-bin/Utilities/VTKPythonWrapping/paraview/simple.py",
>> >>>>> line 101, in GetDisplayProperties
>> >>>>> return GetRepresentation(proxy, view)
>> >>>>> File "/home/nawijn/scratch/paraview-bin/Utilities/VTKPythonWrapping/paraview/simple.py",
>> >>>>> line 90, in GetRepresentation
>> >>>>> rep = servermanager.GetRepresentation(proxy, view)
>> >>>>> File "/home/nawijn/scratch/paraview-bin/Utilities/VTKPythonWrapping/paraview/servermanager.py",
>> >>>>> line 1989, in GetRepresentation
>> >>>>> if rep.Input == aProxy:
>> >>>>> File "/home/nawijn/scratch/paraview-bin/Utilities/VTKPythonWrapping/paraview/servermanager.py",
>> >>>>> line 357, in __getattr__
>> >>>>> return getattr(self.SMProxy, name)
>> >>>>> AttributeError: Input
>> >>>>>
>> >>>>>
>> >>>>> Any suggestions?
>> >>>>>
>> >>>>> On Wed, Jul 15, 2009 at 10:17 PM, Utkarsh
>> >>>>> Ayachit<utkarsh.ayachit at kitware.com> wrote:
>> >>>>>> "Text" is a data source similar to the reader. You need to "Show" it
>> >>>>>> to add it to the active view.
>> >>>>>>
>> >>>>>> Just do:
>> >>>>>> load = 100.0
>> >>>>>> # Don't know how to get this into the view
>> >>>>>> text = Text()
>> >>>>>> text.Text = "Load %6.3f" % load
>> >>>>>> Show()
>> >>>>>>
>> >>>>>> Utkarsh
>> >>>>>>
>> >>>>>> On Wed, Jul 15, 2009 at 4:01 PM, M. Nawijn<nawijn at gmail.com> wrote:
>> >>>>>>> Hello,
>> >>>>>>>
>> >>>>>>> I am a newbie in Paraview Python scripting, so I apologize upfront if
>> >>>>>>> this is a trivial question.
>> >>>>>>>
>> >>>>>>> I am processing a set of datafiles obtained from an optical
>> >>>>>>> measurement system. I so far succeeded in loading the data file,
>> >>>>>>> adding a color legend and storing the resulting view in a image file.
>> >>>>>>> Sample code is posted below.
>> >>>>>>>
>> >>>>>>> What I would like to do next is add a text source to the view to
>> >>>>>>> provide some contextual information about the data (in particular the
>> >>>>>>> external load level at which the data was captured). I managed to add
>> >>>>>>> a text source to an "empty" view (so without first reading the data),
>> >>>>>>> but I cannot find a way to have the data and text source together.
>> >>>>>>>
>> >>>>>>> Can someone explain how I can add this to the view?
>> >>>>>>>
>> >>>>>>> Kind regards,
>> >>>>>>>
>> >>>>>>> Marco
>> >>>>>>>
>> >>>>>>> #==== What I have so far ===================================================
>> >>>>>>>
>> >>>>>>> from paraview.simple import *
>> >>>>>>>
>> >>>>>>> lt = MakeBlueToRedLT(-1.0, 1.0)
>> >>>>>>>
>> >>>>>>> bar = servermanager.rendering.ScalarBarWidgetRepresentation()
>> >>>>>>> bar.LookupTable = lt
>> >>>>>>> bar.LabelColor = [0.0, 1.0, 0.0]
>> >>>>>>> bar.Title = r'W [mm]'
>> >>>>>>> bar.TitleColor = [0.0, 1.0, 0.0]
>> >>>>>>> bar.LabelFontSize = 14
>> >>>>>>> bar.AspectRatio = 15.0
>> >>>>>>> bar.AutomaticLabelFormat = 0
>> >>>>>>>
>> >>>>>>> reader = XMLUnstructuredGridReader(FileName='disp-stage-%d.vtu' % 17)
>> >>>>>>>
>> >>>>>>> Show()
>> >>>>>>>
>> >>>>>>> #UpdatePipeline()
>> >>>>>>>
>> >>>>>>> view = GetActiveView()
>> >>>>>>> view.Background = [0,0,0]
>> >>>>>>> ResetCamera(view)
>> >>>>>>> view.UseOffscreenRenderingForScreenshots = 0
>> >>>>>>>
>> >>>>>>> dp = GetDisplayProperties()
>> >>>>>>> dp.ColorArrayName = 'W'
>> >>>>>>>
>> >>>>>>> rep = GetRepresentation()
>> >>>>>>> rep.LookupTable = lt
>> >>>>>>>
>> >>>>>>> view.Representations.append(bar)
>> >>>>>>>
>> >>>>>>> load = 100.0
>> >>>>>>> # Don't know how to get this into the view
>> >>>>>>> text = Text()
>> >>>>>>> text.Text = "Load %6.3f" % load
>> >>>>>>>
>> >>>>>>> # Image does not show the text
>> >>>>>>> WriteImage('test.png')
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>> >>>>>>>
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>> >>>>>>>
>> >>>>>>
>> >>>>>
>> >>>>
>> >>>
>> >>
>> >
>
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