Module category: Filter

• FilterCrop
  • Parameters
  • Input Ports
  • Output Ports
  • Examples

FilterCrop

FilterCrop allows to reduce the number of grid lines in structured grids.

FilterCrop can either crop the index space of a grid by chosing min and max indices different from 0 and the initial max value, by simply omitting all grid points that lie outside this interval (this is independent for all three coordinate axes). The other possibility is to use the sample parameter to skip a certain number of intermediate grid points (this is the same value for all three directions). A sample of 2 (the default) means that every second grid point will be displayed, in the case of 3 every third grid point and so on.

FilterCrop is available for COVISE version 4.5 and higher. It's tested on all supported platforms.

Parameters

Name	Type	Description
i_min	Slider	minimum for the range of the i index
i_max	Slider	maximum for the range of the i index
j_min	Slider	minimum for the range of the j index
j_max	Slider	maximum for the range of the j index
k_min	Slider	minimum for the range of the k index
k_max	Slider	maximum for the range of the k index
sample	Scalar	reduces to every nth gridline

Input Ports

Name	Type	Description
requiredmeshin	UniformGrid StructuredGrid RectilinearGrid	Grids or sets of grids.
optionaldatain	Float Vec3	Scalar or vector data on the grid or sets of scalar or vector data on the sets of grids. The number of elements must match the number of nodes in the grid.

Output Ports

Name	Type	Description
outputmeshout	UniformGrid StructuredGrid RectilinearGrid	The filtered and cropped grid.
dependdataout	Float Vec3	The filtered and cropped data (this object is only created when the input port datain is connected).

Examples

Figure: covise/net/examples/FilterCrop.net

In this example some grid and data is generated by the GenDat module (it can be chosen whether this will be on a uniform, rectilinear or structured grid). After filtering and/or cropping the grid and the data the grid is displayed via the ShowGrid module in the Renderer. The next image is a snapshot of the Control Panel showing the parameters for the map FilterCrop.net.

Figure: Parameters for the example map

In addition the unfiltered grid can be seen in blue (partially overlapped by the white filtered grid). The next image is a snapshot of the results in the Inventor Renderer.

Figure: Result in the renderer