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Description:
This routine accepts an array
consisting a series of (vectorised) lines of data. The data values in the lines are then combined to form
an output mode line. The output modal values are returned in the array RESULT. The variances are
propagated through the combination process and returned in RESVAR.
Invocation
CALL
CCG_MO1x( NSIGMA, NITER, NPIX, NLINES, STACK, VARS, MINPIX, NMAT, COVEC, RESULT,
RESVAR, WRK1, WRK2, POINT, USED, NCON, NBAD, STATUS )
Arguments
NSIGMA =
REAL (Given)
The number of sigma at which to reject data values.
NITER = INTEGER
(Given)
Maximum number of refining iterations.
NPIX = INTEGER (Given)
The number
of pixels in a line of data.
NLINES = INTEGER (Given)
The number of lines of data
in the stack.
STACK( NPIX, NLINES ) = ? (Given)
The array of lines which are to be
combined into a single line.
VARS( NPIX, NLINES ) = ? (Given)
The data variances.
MINPIX = INTEGER (Given)
The minimum number of pixels required to contribute to
an output pixel.
NMAT = INTEGER (Given)
Size of the first dimension of COVEC.
COVEC( NMAT, NLINES ) = DOUBLE PRECISION (Given)
The packed variance-covariance
matrix of the order statistics from a normal distribution of sizes up to NLINES, produced by
CCG_ORVAR.
RESULT( NPIX ) = ? (Returned)
The output line of data.
RESVAR( NPIX ) = ?
(Returned)
The output variances.
WRK1( NLINES ) = ? (Returned)
Workspace for
calculations.
WRK2( NLINES ) = ? (Returned)
Workspace for calculations.
POINT(
NLINES ) = INTEGER (Returned)
Workspace to hold pointers to the original positions
of the data before extraction and conversion in to the WRK1 array.
USED( NLINES )
= LOGICAL (Returned)
Workspace used to indicate which values have been used in
estimating a resultant value.
NCON( NLINES ) = DOUBLE PRECISION (Returned)
The
actual number of contributing pixels from each input line to the output line.
NBAD =
INTEGER (Returned)
The number of bad values in the output array created while forming the
statistics. It excludes those bad values whose corresponding values along the collapse axis
are all bad.
STATUS = INTEGER (Given and Returned)
The global status.
Notes:
-
There is a routine for real and double-precision: replace "
x"
in the routine name by D or R as
appropriate. The STACK, VARS, RESULT, RESVAR, WRK1, and WRK2 arguments supplied to the
routine must have the data type specified.
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