[vtk-developers] [vtkusers] Removal of vtkImageSource causing problems for vtkITKArchetypeImageSeriesReader
berk.geveci at kitware.com
Thu Apr 18 11:55:34 EDT 2013
Can you share the piece of the code that is leading to this error? The
easiest thing would be to run this in a debugger and set a breakpoint
It looks like someone is calling SetInputConnection() or one of the related
functions on the reader. Also, if you could post the old and the new
versions of the reader, I might have some more specific suggestions on the
On Thu, Apr 18, 2013 at 11:44 AM, Kent Williams
<nkwmailinglists at gmail.com>wrote:
> I have spent several hours puzzling over this.
> There is a class vtkITKArchetypeImageSeriesReader that is part of Slicer.
> In the process of converting BRAINSTools to be compatible with VTK6, I ran
> into this issue: vtkImageSource is gone, and
> vtkITKArchetypeImageSeriesReader derives from it.
> As far as I can tell from reading the Pipeline migration guide, things
> that were once derived from vtkSource are now supposed to be derived from
> So I changed the superclass for vtkITKArchetypeImageSeriesReader to
> This compiles OK but at runtime it has this error message:
> 118: ERROR: In
> line 715
> 118: vtkCompositeDataPipeline (0x7f946c916190): Input port 0 of algorithm
> vtkITKArchetypeImageSeriesScalarReader(0x7f946c914990) has 0 connections
> but is not optional.
> Now something that is a source, doesn't need any inputs -- the input in
> this case is the name of the file or files to read to generate an image.
> I don't understand the VTK pipeline in general, or this problem
> specifically, and frankly I was trying to do this conversion on a 'need to
> know' basis -- only learn what I need to know in order to get the
> conversion done.
> So the question is -- if something was working fine before derived from
> vtkImageSource, what is the least-effort path to getting it functional in
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