
 Usage

vtkDirectedGraphAlgorithm is a convenience class to make
writing algorithms easier. It is also designed to help
transition old algorithms to the new pipeline edgehitecture.
There are some assumptions and defaults made by this class
you should be aware of. This class defaults such that your
filter will have one input port and one output port. If that
is not the case simply change it with SetNumberOfInputPorts
etc. See this class constructor for the default. This class
also provides a FillInputPortInfo method that by default
says that all inputs will be Graph. If that isn't the case
then please override this method in your subclass. This
class breaks out the downstream requests into separate
functions such as ExecuteData and ExecuteInformation. For
new algorithms you should implement RequestData( request,
inputVec, outputVec) but for older filters there is a
default implementation that calls the old ExecuteData
(output) signature. For even older filters that don't
implement ExecuteData the default implementation calls the
even older Execute() signature.
.SECTION Thanks Thanks to Patricia Crossno, Ken Moreland,
Andrew Wilson and Brian Wylie from Sandia National
Laboratories for their help in developing this class.
To create an instance of class vtkDirectedGraphAlgorithm,
simply invoke its constructor as follows

    obj = vtkDirectedGraphAlgorithm



 Methods

The class vtkDirectedGraphAlgorithm has several methods that
can be used. They are listed below. Note that the
documentation is translated automatically from the VTK
sources, and may not be completely intelligible. When in
doubt, consult the VTK website. In the methods listed below,
obj is an instance of the vtkDirectedGraphAlgorithm class.

* string = obj.GetClassName ()
* int = obj.IsA (string name)
* vtkDirectedGraphAlgorithm = obj.NewInstance ()
* vtkDirectedGraphAlgorithm = obj.SafeDownCast (vtkObject o)
* vtkDirectedGraph = obj.GetOutput () - Get the output data
  object for a port on this algorithm.
* vtkDirectedGraph = obj.GetOutput (int index) - Get the
  output data object for a port on this algorithm.
* obj.SetInput (vtkDataObject obj) - Set an input of this
  algorithm. You should not override these methods because
  they are not the only way to connect a pipeline. Note that
  these methods support old-style pipeline connections. When
  writing new code you should use the more general
  vtkAlgorithm::SetInputConnection(). These methods
  transform the input index to the input port index, not an
  index of a connection within a single port.
* obj.SetInput (int index, vtkDataObject obj) - Set an input
  of this algorithm. You should not override these methods
  because they are not the only way to connect a pipeline.
  Note that these methods support old-style pipeline
  connections. When writing new code you should use the more
  general vtkAlgorithm::SetInputConnection(). These methods
  transform the input index to the input port index, not an
  index of a connection within a single port.


* FreeMat_Documentation
* Visualization_Toolkit_Filtering_Classes
* Generated on Thu Jul 25 2013 17:18:30 for FreeMat by
  doxygen_ 1.8.1.1

