Thanks guys,
As always, it was a nice combination of user error and unexpected behavior. My
slice origin was [1.0, 1.0, 0.0] and when I used the CSV writer, it happily
wrote out data files for me so I assumed everything worked fine. But when I
used any other writer, the slice didn't actually exist (that's why there was
the error about no output port). When I moved my slice to [1.0, 1.0, 0.1] then
I could get other writers to work. I went with the XdmfWriter just because
we're used to dealing with Xdmf files anyway.
SaveData() also works (once my slice is in the right place) on later versions,
but doesn't exist in 4.1. I should upgrade, but it's such a pain to build on
clusters that I like to avoid it as long as possible!
Thanks again,
Tim
----- Original Message -----
From: "Ganesh Vijayakumar" <ganesh.i...@gmail.com>
Cc: "ParaView list" <paraview@paraview.org>
Sent: Tuesday, October 27, 2015 3:11:54 PM
Subject: Re: [Paraview] Saving a slice of data for later visualization
I use this. Has worked for me fairly well.
SaveData('fileName.vtm', proxy=Clip1, Writealltimestepsasfileseries=0,
DataMode='Binary', HeaderType='UInt64', EncodeAppendedData=0,
CompressorType='None')
On Tue, Oct 27, 2015 at 7:55 AM Andy Bauer < andy.ba...@kitware.com > wrote:
Hi Tim,
I believe that the writer you want is the XML multiblock data writer --
XMLMultiBlockDataWriter(). The extension for that is .vtm. The reason for this
is that a slice through a multiblock data set outputs a multiblock of polydata.
You can use the Merge Blocks filter to reduce it to an unstructured grid.
Cheers,
Andy
On Mon, Oct 26, 2015 at 8:21 PM, Tim Gallagher < tim.gallag...@gatech.edu >
wrote:
<blockquote>
Hi,
I'm struggling to write a script for Paraview that will let me take a slice
through my vtkMultiblockDataSet and save just the slice (so all of the data on
the slice and all of the points that make up the slice) in a format that I can
look at later. I can get it to dump all of the data to a set of CSV files, but
I can't look at those again in paraview.
My function is very simple (see below). I have tried to use CreateWriter
directly with the .vtk file extension like is shown on
http://www.paraview.org/Wiki/ParaView/Python_Scripting#Writing_Data_Files_.28ParaView_3.9_or_later.29
but that says the vtk file format is unknown and so it doesn't work.
I have tried virtually every writer that would make sense in that writer line
and none of them work properly. As it is, the one that is there now says:
vtkCompositeDataPipeline (0x9ac9380): Can not execute simple alorithm without
output ports
and I don't know what that means or why it fails to write. (Side note --
algorithm is spelled wrong in that error message, comes from
vtkCompositeDataPipeline.cxx line 168).
Anybody have any suggestions or advice on how to save the datasets that results
from a slice so I can look at just that slice later?
Thanks,
Tim
def run(out_dir, file_num, spreadsheet_name, slice_origin, slice_normal,
triangulate=False):
restart_file = XDMFReader(FileName=out_dir+'/RESTS/rest_%05i.xmf' % file_num)
restart_file_dr = Show()
if triangulate:
tri = 1
else:
tri = 0
my_slice = Slice(SliceOffsetValues=[0.0], Triangulatetheslice=tri,
SliceType="Plane" )
my_slice.SliceType.Origin = slice_origin
my_slice.SliceType.Normal = slice_normal
slice_dr = Show()
writer = XMLUnstructuredGridWriter(Input=my_slice)
writer.FileName = out_dir+"/post/"+"%s_data_%05i_.vtu" % (spreadsheet_name,
file_num)
writer.UpdatePipeline()
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</blockquote>
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