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vtkExtractGrid Class Reference
select piece (e.g., volume of interest) and/or subsample structured grid dataset.
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#include <vtkExtractGrid.h>
Inheritance diagram for vtkExtractGrid:
[legend]Collaboration diagram for vtkExtractGrid:
[legend]List of all members.
Detailed Description
select piece (e.g., volume of interest) and/or subsample structured grid dataset.
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Date:
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2001/10/11 13:37:00
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Revision:
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1.29
vtkExtractGrid is a filter that selects a portion of an input structured grid dataset, or subsamples an input dataset. (The selected portion of interested is referred to as the Volume Of Interest, or VOI.) The output of this filter is a structured grid dataset. The filter treats input data of any topological dimension (i.e., point, line, image, or volume) and can generate output data of any topological dimension.
To use this filter set the VOI ivar which are i-j-k min/max indices that specify a rectangular region in the data. (Note that these are 0-offset.) You can also specify a sampling rate to subsample the data.
Typical applications of this filter are to extract a plane from a grid for contouring, subsampling large grids to reduce data size, or extracting regions of a grid with interesting data.
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See also:
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vtkGeometryFilter vtkExtractGeometry vtkExtractVOI vtkStructuredGridGeometryFilter
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Examples:
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vtkExtractGrid (Examples)
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Tests:
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vtkExtractGrid (Tests)
Definition at line 78 of file vtkExtractGrid.h.
Constructor & Destructor Documentation
| vtkExtractGrid::vtkExtractGrid |
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| vtkExtractGrid::~vtkExtractGrid |
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Member Function Documentation
| vtkExtractGrid* vtkExtractGrid::New |
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| virtual const char* vtkExtractGrid::GetClassName |
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| int vtkExtractGrid::IsTypeOf |
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| virtual int vtkExtractGrid::IsA |
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const char * |
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| vtkExtractGrid* vtkExtractGrid::SafeDownCast |
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vtkObject * |
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| void vtkExtractGrid::PrintSelf |
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ostream & |
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vtkIndent |
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Methods invoked by print to print information about the object including superclasses. Typically not called by the user (use Print() instead) but used in the hierarchical print process to combine the output of several classes.
Reimplemented from vtkSource. |
| virtual void vtkExtractGrid::SetVOI |
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int |
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Specify i-j-k (min,max) pairs to extract. The resulting structured grid dataset can be of any topological dimension (i.e., point, line, plane, or 3D grid). |
| virtual void vtkExtractGrid::SetVOI |
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int |
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Specify i-j-k (min,max) pairs to extract. The resulting structured grid dataset can be of any topological dimension (i.e., point, line, plane, or 3D grid). |
| virtual int* vtkExtractGrid::GetVOI |
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Specify i-j-k (min,max) pairs to extract. The resulting structured grid dataset can be of any topological dimension (i.e., point, line, plane, or 3D grid). |
| virtual void vtkExtractGrid::GetVOI |
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int |
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Specify i-j-k (min,max) pairs to extract. The resulting structured grid dataset can be of any topological dimension (i.e., point, line, plane, or 3D grid). |
| virtual void vtkExtractGrid::SetSampleRate |
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Set the sampling rate in the i, j, and k directions. If the rate is > 1, then the resulting VOI will be subsampled representation of the input. For example, if the SampleRate=(2,2,2), every other point will be selected, resulting in a volume 1/8th the original size. |
| virtual void vtkExtractGrid::SetSampleRate |
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int |
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Set the sampling rate in the i, j, and k directions. If the rate is > 1, then the resulting VOI will be subsampled representation of the input. For example, if the SampleRate=(2,2,2), every other point will be selected, resulting in a volume 1/8th the original size. |
| virtual int* vtkExtractGrid::GetSampleRate |
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Set the sampling rate in the i, j, and k directions. If the rate is > 1, then the resulting VOI will be subsampled representation of the input. For example, if the SampleRate=(2,2,2), every other point will be selected, resulting in a volume 1/8th the original size. |
| virtual void vtkExtractGrid::GetSampleRate |
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int |
data[3] |
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Set the sampling rate in the i, j, and k directions. If the rate is > 1, then the resulting VOI will be subsampled representation of the input. For example, if the SampleRate=(2,2,2), every other point will be selected, resulting in a volume 1/8th the original size. |
| virtual void vtkExtractGrid::SetIncludeBoundary |
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Control whether to enforce that the "boundary" of the grid is output in the subsampling process. (This ivar only has effect when the SampleRate in any direction is not equal to 1.) When this ivar IncludeBoundary is on, the subsampling will always include the boundary of the grid even though the sample rate is not an even multiple of the grid dimensions. (By default IncludeBoundary is off.) |
| virtual int vtkExtractGrid::GetIncludeBoundary |
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Control whether to enforce that the "boundary" of the grid is output in the subsampling process. (This ivar only has effect when the SampleRate in any direction is not equal to 1.) When this ivar IncludeBoundary is on, the subsampling will always include the boundary of the grid even though the sample rate is not an even multiple of the grid dimensions. (By default IncludeBoundary is off.) |
| virtual void vtkExtractGrid::IncludeBoundaryOn |
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Control whether to enforce that the "boundary" of the grid is output in the subsampling process. (This ivar only has effect when the SampleRate in any direction is not equal to 1.) When this ivar IncludeBoundary is on, the subsampling will always include the boundary of the grid even though the sample rate is not an even multiple of the grid dimensions. (By default IncludeBoundary is off.) |
| virtual void vtkExtractGrid::IncludeBoundaryOff |
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Control whether to enforce that the "boundary" of the grid is output in the subsampling process. (This ivar only has effect when the SampleRate in any direction is not equal to 1.) When this ivar IncludeBoundary is on, the subsampling will always include the boundary of the grid even though the sample rate is not an even multiple of the grid dimensions. (By default IncludeBoundary is off.) |
| void vtkExtractGrid::Execute |
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This method is the old style execute method
Reimplemented from vtkSource. |
| void vtkExtractGrid::ExecuteInformation |
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| void vtkExtractGrid::ComputeInputUpdateExtents |
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vtkDataObject * |
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What is the input update extent that is required to produce the desired output? By default, the whole input is always required but this is overridden in many subclasses.
Reimplemented from vtkSource. |
Member Data Documentation
int vtkExtractGrid::VOI[6] [protected]
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int vtkExtractGrid::SampleRate[3] [protected]
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int vtkExtractGrid::IncludeBoundary [protected]
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The documentation for this class was generated from the following file:
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