[Paraview] vtkPVTrivialProducer issues

Wed Apr 28 21:21:28 EDT 2010

There is always pydoc.  Just run help(paraview.simple) in the console.

Pat

On Wed, Apr 28, 2010 at 9:14 PM, <wastrel at gmail.com> wrote:

> I have read that, but wonder if there is any more detailed and systematic
> document available.
>
> Thanks.
>
> Ken
>
>
>
>
> On Wed, Apr 28, 2010 at 5:58 PM, pat marion <pat.marion at kitware.com>wrote:
>
>> You can read about python scripting in paraview here:
>>
>>
>> http://www.paraview.org/Wiki/ParaView/Python_Scripting
>>
>> Paraview has the concept of an active source.  Making a source the active
>> source in python is like selecting it in the gui.  For all operations, if no
>> input is specified, the active source is used.  You can get the active
>> source with GetActiveSource().  When you create a new object, like
>> TrivialProducer(), it becomes the active source.
>>
>> When creating a new source (or writer), you can specify the input(s)
>> explicity using arguments to the constructor.  Or you can specify a Input
>> keyword argument that takes a list.  Such as:
>>
>> AppendDatasets(source1, source2)
>>  or
>> AppendDatasets(Input=[source1, source2])
>>
>> Pat
>>
>>
>> On Wed, Apr 28, 2010 at 6:22 PM, <wastrel at gmail.com> wrote:
>>
>>> Thanks. I just tired it and it seems to work. But how does the writer
>>> figure out the input object?
>>>
>>> Is there any detailed documentation on pvpython?
>>>
>>> Thanks,
>>>
>>> Ken
>>>
>>>
>>>
>>>
>>> On Sun, Apr 25, 2010 at 6:37 AM, Utkarsh Ayachit <
>>> utkarsh.ayachit at kitware.com> wrote:
>>>
>>>> Here's a modified version of the script, using the updated python
>>>> scripting style (since ParaView 3.6)
>>>>
>>>>
>>>> from paraview.simple import *
>>>> from paraview.simple import servermanager as sm
>>>> from paraview import vtk
>>>>
>>>> # Set the pvpython path
>>>> INPUTFILE="test.vtu"
>>>> OUTPUTFILE="tested.vtu"
>>>>
>>>> # create a reader
>>>> reader=XMLUnstructuredGridReader(FileName=INPUTFILE)
>>>>
>>>> # get the data i.e moves data from the server to the client
>>>> data=sm.Fetch(reader)
>>>>
>>>> tp=TrivialProducer()
>>>> obj=tp.GetClientSideObject()
>>>> obj.SetOutput(data)
>>>>
>>>> writer=XMLUnstructuredGridWriter(DataMode=2,FileName=OUTPUTFILE)
>>>> writer.UpdatePipeline()
>>>>
>>>>
>>>> Utkarsh
>>>>
>>>> On Sat, Apr 24, 2010 at 3:24 PM,  <wastrel at gmail.com> wrote:
>>>> > I simplified the code and tried it on Paraview3.8.0. It reads in a vtu
>>>> file,
>>>> > fetch the data and then write it back to a new file. But still got
>>>> errors as
>>>> > follow.
>>>> >
>>>> > Script:
>>>> >
>>>> > from paraview.simple import *
>>>> > from paraview.simple import servermanager as sm
>>>> > from paraview import vtk
>>>> >
>>>> > # connect internally
>>>> > connection=sm.Connect()
>>>> >
>>>> > # Set the pvpython path
>>>> > INPUTFILE="test.vtu"
>>>> > OUTPUTFILE="tested.vtu"
>>>> >
>>>> > # create a reader
>>>> > reader=sm.sources.XMLUnstructuredGridReader(FileName=INPUTFILE)
>>>> >
>>>> > # get the data i.e moves data from the server to the client
>>>> > data=sm.Fetch(reader)
>>>> >
>>>> > tp=sm.sources.TrivialProducer()
>>>> > obj=tp.GetClientSideObject()
>>>> > obj.SetOutput(data)
>>>> >
>>>> >
>>>> writer=sm.writers.XMLUnstructuredGridWriter(DataMode=2,FileName=OUTPUTFILE,Input=obj)
>>>> >
>>>> > writer.UpdatePipeline()
>>>> >
>>>> >
>>>> > Errors:
>>>> >
>>>> > getting appended
>>>> > vtkReductionFilter : [ ...........]
>>>> > Traceback (most recent call last):
>>>> >   File "convert.py", line 88, in <module>
>>>> >
>>>> >
>>>> writer=sm.writers.XMLUnstructuredGridWriter(DataMode=2,FileName=OUTPUTFILE,Input=obj)
>>>> >   File
>>>> >
>>>> "/home/kitware/ParaView-3-8/ParaView-3.8/ParaView3Bin/Utilities/VTKPythonWrapping/paraview/servermanager.py",
>>>> > line 186, in __init__
>>>> >   File
>>>> >
>>>> "/home/kitware/ParaView-3-8/ParaView-3.8/ParaView3Bin/Utilities/VTKPythonWrapping/paraview/servermanager.py",
>>>> > line 204, in __setattr__
>>>> >   File
>>>> >
>>>> "/home/kitware/ParaView-3-8/ParaView-3.8/ParaView3Bin/Utilities/VTKPythonWrapping/paraview/servermanager.py",
>>>> > line 2361, in setProperty
>>>> >   File
>>>> >
>>>> "/home/kitware/ParaView-3-8/ParaView-3.8/ParaView3Bin/Utilities/VTKPythonWrapping/paraview/servermanager.py",
>>>> > line 253, in SetPropertyWithName
>>>> >   File
>>>> >
>>>> "/home/kitware/ParaView-3-8/ParaView-3.8/ParaView3Bin/Utilities/VTKPythonWrapping/paraview/servermanager.py",
>>>> > line 1162, in SetData
>>>> > AttributeError: SMProxy
>>>> >
>>>> >
>>>> >
>>>> > Any clues?
>>>> >
>>>> >
>>>> > On Sat, Apr 24, 2010 at 9:41 AM, Utkarsh Ayachit
>>>> > <utkarsh.ayachit at kitware.com> wrote:
>>>> >>
>>>> >> Here are my results from 3.7 (consequently 3.8 or git master should
>>>> >> work as well).
>>>> >>
>>>> >> >>> from paraview.simple import *
>>>> >> paraview version 3.7.0, Date: 2010-03-27
>>>> >> >>> TrivialProducer()
>>>> >> <paraview.servermanager.TrivialProducer object at 0x121587e90>
>>>> >> >>> servermanager.sources.TrivialProducer()
>>>> >> <paraview.servermanager.TrivialProducer object at 0x121587d50>
>>>> >>
>>>> >> Utkarsh
>>>> >>
>>>> >> On Fri, Apr 23, 2010 at 5:44 PM, Utkarsh Ayachit
>>>> >> <utkarsh.ayachit at kitware.com> wrote:
>>>> >> > You no longer need the initial part for loading the XML. You can
>>>> >> > directly use:
>>>> >> >
>>>> >> >  tp = sm.sources.TrivialProducer()
>>>> >> >
>>>> >> > and that should work.
>>>> >> >
>>>> >> > Utkarsh
>>>> >> >
>>>> >> > On Fri, Apr 23, 2010 at 5:09 PM,  <wastrel at gmail.com> wrote:
>>>> >> >> I used the the following snippet to generate data on the client
>>>> side
>>>> >> >> but
>>>> >> >> ended up with errors:
>>>> >> >>
>>>> >> >> Code:
>>>> >> >> sm = servermanager
>>>> >> >> f = open('trivialproducer.xml', 'r')
>>>> >> >> parser = sm.vtkSMXMLParser()
>>>> >> >> parser.Parse(f.read())
>>>> >> >> parser.ProcessConfiguration(sm.vtkSMObject.GetProxyManager())
>>>> >> >> # Update the modules
>>>> >> >> sm._updateModules()
>>>> >> >>
>>>> >> >> tp = sm.sources.TrivialProducer()
>>>> >> >> obj = tp.GetClientSideObject()
>>>> >> >> obj.SetOutput(pd)
>>>> >> >>
>>>> >> >> # use tp as any other source proxy
>>>> >> >>
>>>> >> >>
>>>> >> >> trivialproducer.xml:
>>>> >> >>
>>>> >> >> <ServerManagerConfiguration>
>>>> >> >> <ProxyGroup name="sources">
>>>> >> >>
>>>> >> >> <SourceProxy name="TrivialProducer"
>>>> >> >> class="vtkPVTrivialProducer">
>>>> >> >> </SourceProxy>
>>>> >> >> </ProxyGroup>
>>>> >> >>
>>>> >> >>
>>>> >> >> Errors:
>>>> >> >> ERROR: In
>>>> >> >>
>>>> >> >>
>>>> /home/berk/Work/ReleaseBuilds/ParaView3/Servers/Common/vtkProcessModule.cxx,
>>>> >> >> line 1001
>>>> >> >> vtkProcessModule (0x807b790): Cannot create object of type
>>>> >> >> "vtkPVTrivialProducer".
>>>> >> >> while processing
>>>> >> >> Message 0 = New
>>>> >> >>   Argument 0 = string_value {vtkPVTrivialProducer}
>>>> >> >>   Argument 1 = id_value {40}
>>>> >> >>
>>>> >> >>
>>>> >> >> ERROR: In
>>>> >> >>
>>>> >> >>
>>>> /home/berk/Work/ReleaseBuilds/ParaView3/Servers/Common/vtkProcessModule.cxx,
>>>> >> >> line 1002
>>>> >> >> vtkProcessModule (0x807b790): Aborting execution for debugging
>>>> >> >> purposes.
>>>> >> >>
>>>> >> >> Abort
>>>> >> >>
>>>> >> >>
>>>> >> >> _______________________________________________
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>>>> >> >>
>>>> >> >> Visit other Kitware open-source projects at
>>>> >> >> http://www.kitware.com/opensource/opensource.html
>>>> >> >>
>>>> >> >> Please keep messages on-topic and check the ParaView Wiki at:
>>>> >> >> http://paraview.org/Wiki/ParaView
>>>> >> >>
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>>>> >> >>
>>>> >> >>
>>>> >> >
>>>> >
>>>> >
>>>>
>>>
>>>
>>> _______________________________________________
>>> Powered by www.kitware.com
>>>
>>> Visit other Kitware open-source projects at
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>>>
>>> Please keep messages on-topic and check the ParaView Wiki at:
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>>>
>>
>
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