public class PermMap extends Mapping
In addition to permuting the coordinate order, a PermMap may also assign constant values to coordinates. This is useful when the number of coordinates is being increased as it allows fixed values to be assigned to any new ones.
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Mapping.Interpolator, Mapping.SpreaderLINEAR_INTERPOLATOR, LINEAR_SPREADER, NEAREST_INTERPOLATOR, NEAREST_SPREADERAST__BAD, AST__TUNULL, pointer| Constructor and Description |
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PermMap(int nin,
int[] inperm,
int nout,
int[] outperm,
double[] constant)
Creates a PermMap.
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decompose, getInvert, getNin, getNout, getReport, getTranForward, getTranInverse, invert, linearApprox, mapBox, mapSplit, rate, rebin, rebinD, rebinF, rebinI, resample, resampleB, resampleD, resampleF, resampleI, resampleL, resampleS, setInvert, setReport, simplify, tran1, tran2, tranGrid, tranN, tranPannul, clear, copy, delete, equals, finalize, getAstConstantI, getB, getC, getD, getF, getI, getID, getIdent, getL, getNobject, getObjSize, getRefCount, hashCode, isThreaded, reportVersions, sameObject, set, setB, setC, setD, setF, setI, setID, setIdent, setL, show, test, tunepublic PermMap(int nin,
int[] inperm,
int nout,
int[] outperm,
double[] constant)
nin - The number of input coordinates.inperm - An optional array with "nin" elements which, for each input
coordinate, should contain the number of the output
coordinate whose value is to be used (note that this array
therefore defines the inverse coordinate transformation).
Coordinates are numbered starting from 1.
For details of additional special values that may be used in this array, see the description of the "constant" parameter.
If a NULL pointer is supplied instead of an array, each input coordinate will obtain its value from the corresponding output coordinate (or will be assigned the value AST__BAD if there is no corresponding output coordinate).
nout - The number of output coordinates.outperm - An optional array with "nout" elements which, for each output
coordinate, should contain the number of the input coordinate
whose value is to be used (note that this array therefore
defines the forward coordinate transformation). Coordinates
are numbered starting from 1.
For details of additional special values that may be used in this array, see the description of the "constant" parameter.
If a NULL pointer is supplied instead of an array, each output coordinate will obtain its value from the corresponding input coordinate (or will be assigned the value AST__BAD if there is no corresponding input coordinate).
constant - An optional array containing values which may be assigned to
input and/or output coordinates instead of deriving them
from other coordinate values. If either of the "inperm" or
"outperm" arrays contains a negative value, it is used to
address this "constant" array (such that -1 addresses the
first element, -2 addresses the second element, etc.) and the
value obtained is used as the corresponding coordinate value.
Care should be taken to ensure that locations lying outside the extent of this array are not accidentally addressed. The array is not used if the "inperm" and "outperm" arrays do not contain negative values.
If a NULL pointer is supplied instead of an array, the behaviour is as if the array were of infinite length and filled with the value AST__BAD.
AstException - if an error occurred in the AST libraryCopyright © 2024 Central Laboratory of the Research Councils. All Rights Reserved.