CIBC:Documentation:SCIRun:Reference:Teem:UnuRmapN
Contents |
UnuRmapN
Information
- Package: Teem
- Catagory: UnuNtoZ
- Author(s): Michael Callahan
- Status: Supported in latest version
- Version: 3.0
Description
Summary
Map nrrd through *regular* univariate map (colormap). A map is regular if the control points are evenly spaced along the domain, and hence their position isn't explicitly represented in the map; the axis min, axis max, and number of points determine their location. This is an N dimensional mapping in that the fast axis of the nrrd is used to look up coordinates in the N or N+1 map. If the map is of dimension N then it is assumed to be grayscale, otherwise all of the fast axis is treated as a 'color'. This module does no interpolation, rather the nrrd coordinates should exactly match the range of the colormap nrrd dimensions, ie 0-255 for a 1D map of size 256.
Detailed Description
Map nrrd through *regular* univariate map of N dimension (colormap). A map is regular if the control points are evenly spaced along the domain, and hence their position isn't explicitly represented in the map; the axis min, axis max, and number of points determine their location.
This is an N dimensional mapping in that the fast axis of the nrrd is used to look up coordinates in the N or N+1 map. For instance if the fast axis is size three, then the map should contain 3 dimensions for grayscale or 4 dimensions where the fast dimension is the 'color'. It is byte copied so the 'color' can really be any opaque data type.
No interpolation is done by this module. Instead the mapping coordinates should be the exact zero based index into the mapping index that is to be used. For example, given a 1D colormap of size 256, the input nrrd should contain values between 0 and 255. The output nrrd will have the same dimensionality as the input but the data will be replaced with the fast axis data from the input nrrd.
Frequently Asked Questions
Known Bugs
Recent Changes
Go back to Documentation:SCIRun:Reference:Teem
