Hi Matt, By quickly reading your code, I understand that you try to put the ouput of the PlotOverLine on the the input of an image writer. The mistake, IMHO, is that PlotOverLine outputs a vtkPolyData (Polygonal Mesh in ParaView), that's why the writer doesn't want it as input (it expects a vtkImageData instead).
I think that what you want is a screenshot of the plot. You should look in that direction. Sort of "Offscreen screenshot" ?? Don't know... HTH Jerome 2010/10/29 <[email protected]>: > > Hi, > > As promised, I have another question! > > The code below can render a picture to the screen fine. But I would > like to send the picture to a file, without rendering anything to the > screen. I know I can put > WriteImage('/tmp/foo.png') > at the end to save the output, but that is after I've popped up an > image. > > I did find a powerpoint by David E DeMarle about paraview scripting > with this in it: > > writer = servermanager.writers.PNGWriter() > writer.FileName = '/tmp/foo.png' > writer.Input = pl > writer.UpdatePipeline() > > But when I try that I get: > ERROR: In /scratch/pv/ParaView/VTK/IO/vtkPNGWriter.cxx, line 54 > vtkPNGWriter (0xb108028): Write:Please specify an input! > which is odd since I thought I had set the input via writer.Input = pl > > My full code was > > from paraview.simple import * > reader = servermanager.sources.XMLUnstructuredGridReader(FileName = > "/var/tmp/file.vtu") > pl = PlotOverLine(Input = reader) > pl.Source.Point1 = [-7000, -5000, 0] > pl.Source.Point2 = [4300, 6300, 1111.75] > writer = servermanager.writers.PNGWriter() > writer.FileName = '/tmp/foo.png' > writer.Input = pl > c = CreateXYPlotView() > d = Show() > d.XArrayName = 'arc_length' > d.SeriesVisibility = ['namecolours (0)', '0', 'namecolours (1)', '0', > 'namecolours (2)', '0', 'vtkValidPointMask', '0', 'arc_length', '0'] > d.UseIndexForXAxis = 0 > writer.UpdatePipeline() > > I feel pretty bad about always asking questions on this list, but I > just can't seem to find documentation, or if I do, it is for a > slightly different setup (as in David E DeMarle's powerpoint for > instance). So, if I am just missing some good doco source, please > point me that way! > > Thanks for any help! > > Matt Wilkins > > On Fri, Oct 29, 2010 at 01:22:24PM +1300, [email protected] wrote: >> >> Hi Utkarsh, >> >> Thanks, I am using 3.9, but I wasn't using paraview.simple, just >> following the examples in the Python Scripting chapter in the ParaView >> Guide. Using paraview.simple does make things simpler ;-) and indeed >> I can get it to work. >> >> For the record this works fine for me: >> >> from paraview.simple import * >> reader = servermanager.sources.XMLUnstructuredGridReader(FileName = >> "/var/tmp/file.vtu") >> pl = PlotOverLine(Input = reader) >> pl.Source.Point1 = [-7000, -5000, 0] >> pl.Source.Point2 = [4300, 6300, 1111.75] >> CreateXYPlotView() >> d = Show() >> d.XArrayName = 'arc_length' >> d.SeriesVisibility = ['namecolours (0)', '0', 'namecolours (1)', '0', >> 'namecolours (2)', '0', 'vtkValidPointMask', '0', 'arc_length', '0'] >> d.UseIndexForXAxis = 0 >> Render() >> >> OK, so got past this problem, more to come I expect! >> >> Thank you >> >> Matt Wilkins >> >> On Thu, Oct 28, 2010 at 09:08:50AM -0600, Utkarsh Ayachit wrote: >> > What version of ParaView are you using? Here's my script with 3.9 >> > (should work with 3.8 too). >> > >> > Wavelet() >> > pl = PlotOverLine() >> > pl.Source.Point1 = [-10, -10, -10] >> > pl.Source.Point2 = [10, 10, 10] >> > CreateXYPlotView() >> > Show() >> > Render() >> > >> > Utkarsh >> > >> > >> > On Wed, Oct 27, 2010 at 2:30 PM, <[email protected]> wrote: >> > > >> > > Hi, >> > > >> > > I am driving paraview via pvpython, and trying to do a probe over >> > > line. I would think this is quite easy, but it is proving >> > > frustratingly difficult! This is what I am typing >> > > >> > > from paraview import servermanager >> > > c = servermanager.Connect() >> > > reader = servermanager.sources.XMLUnstructuredGridReader(FileName = >> > > "/var/tmp/file.vtu") >> > > pl = servermanager.filters.ProbeLine(Input = reader) >> > > pl.Source.Point1 = [-7000, -5000, 0] >> > > pl.Source.Point2 = [4300, 6300, 1111.75] >> > > view = servermanager.CreateRenderView() >> > > rep = servermanager.CreateRepresentation(pl, view) >> > > pl.UpdatePipeline() >> > > view.ResetCamera() >> > > view.StillRender() >> > > >> > > I get a nice picture of the x axis and a short y axis, but nothing >> > > plotted. I try a probe over line in paraview with the same beginning >> > > and end points and I get data displayed. >> > > >> > > I am not specifying what variables should be displayed for the probe >> > > over line, so perhaps nothing is getting displayed? I cannot for the >> > > life of me find how I would specify what to display though. If I do a >> > > probe over line in paraview with the Python Shell Trace running, I can >> > > see that the SeriesVisibility attribute in the >> > > paraview.servermanager.XYChartRepresentation object is being set. >> > > However I don't have that representation, I only have the 'rep' above, >> > > and that doesn't have a SeriesVisibility attribute. >> > > >> > > Thank you for any help, even if it is a pointer to where this is >> > > documented! >> > > >> > > Matt >> > > >> > > >> > > _______________________________________________ >> > > Powered by www.kitware.com >> > > >> > > 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 >> > > >> > > Follow this link to subscribe/unsubscribe: >> > > http://www.paraview.org/mailman/listinfo/paraview >> > > >> _______________________________________________ >> Powered by www.kitware.com >> >> 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 >> >> Follow this link to subscribe/unsubscribe: >> http://www.paraview.org/mailman/listinfo/paraview > _______________________________________________ > Powered by www.kitware.com > > 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 > > Follow this link to subscribe/unsubscribe: > http://www.paraview.org/mailman/listinfo/paraview > _______________________________________________ Powered by www.kitware.com 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 Follow this link to subscribe/unsubscribe: http://www.paraview.org/mailman/listinfo/paraview
