[vtkusers] Problem with 'vtkThreshold'

[Amy Squillacote]

You don't need to do any casting. Just do #include "vtkUnstructuredGrid.h".

- Amy

Björn Zehner wrote:
> Hello,
> I am not sure if you need to explicitely downcast. Did you include 
> both, vtkUnstructuredGrid.h and vtkDataObject.h?
>  
> else try:
> gf->SetInput(vtkUnstructuredGrid::SafeDownCast(thresholdEdgels->GetOutput()));
>  
> else I don't know.
> Kind regards and good luck,
> Bjoern
>
> ----- Ursprüngliche Nachricht -----
> Von: Nour Mestiri <nourmestiri at yahoo.fr>
> Datum: Donnerstag, 13. November 2008, 10:44
> Betreff: Re: [vtkusers] Problem with 'vtkThreshold'
> An: Björn Zehner <bjoern.zehner at ufz.de>
> Cc: vtk <vtkusers at vtk.org>
>
>
> > Hi,
> > I knew that i can resolve the problem using the 'SafeDownCast' 
> function. How can i do this?
> > Thanks
>
> > --- En date de : *Jeu 13.11.08, "Björn Zehner" 
> /<bjoern.zehner at ufz.de>/* a écrit :
>
>     > De: "Björn Zehner" <bjoern.zehner at ufz.de>
>     > Objet: Re: [vtkusers] Problem with 'vtkThreshold'
>     > À: nourmestiri at yahoo.fr
>     > Cc: "vtk" <vtkusers at vtk.org>
>     > Date: Jeudi 13 Novembre 2008, 9h15
>
>     > Hi,
>     > sometimes I get this kind of error if an include is missing. In
>     your case that
>     > would be #include "vtkDataObject.h"
>     > Kind regards,
>     > Bjoern
>
>     > ----- Ursprüngliche Nachricht -----
>     > Von: Nour Mestiri <nourmestiri at yahoo.fr>
>     > Datum: Mittwoch, 12. November 2008, 18:55
>     > Betreff: [vtkusers] Problem with 'vtkThreshold'
>     > An: vtk <vtkusers at vtk.org>
>
>
>     > > Hi all vtk users.
>     > > I have a problem with 'vtkThreshold' class.
>     > > I want to use the output of a 'vtkThreshold ' as the input of
>     a 'GeometryFilter'.
>     > > I do this:
>     > > vtkThreshold *thresholdEdgels = vtkThreshold::New();
>     > > ...
>     > > ...
>     > > vtkGeometryFilter *gf = vtkGeometryFilter::New();
>     > > gf->SetInput(thresholdEdgels->GetOutput());
>      
>     > > When i this this code, i have this error:
>     > > cannot convert parameter 1 from 'class vtkUnstructuredGrid *'
>     to 'class vtkDataObject *'
>      
>     > > How should i do to rectify this?
>     > > Thanks a lot
>
>
>
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>
>     >
>     -------------------------------------------------------------------------
>
>     > Dr. Bjoern Zehner
>     > UFZ Centre for Environmental Research Leipzig-Halle
>     > Permoserstrasse 15
>     > 04318 Leipzig
>     > Germany
>     > http://www.ufz.de/index.php?en=5673
>     > Tel: ++49 (341) 235 1979
>     > Fax: ++49 (341) 235 1939
>
>
>
>
>
>
> -------------------------------------------------------------------------
> Dr. Bjoern Zehner
> UFZ Centre for Environmental Research Leipzig-Halle
> Permoserstrasse 15
> 04318 Leipzig
> Germany
> http://www.ufz.de/index.php?en=5673
> Tel: ++49 (341) 235 1979
> Fax: ++49 (341) 235 1939
>
> ------------------------------------------------------------------------
>
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-- 
Amy Squillacote                    Phone: (256) 726-4839
Computer Scientist                 Fax: (256) 726-4806
CFD Research Corporation           Web: http://www.cfdrc.com
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Huntsville, AL  35805