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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 trimmed mean in which the minimum and
maximum values are excluded. The output means are returned in the array RESULT.
Invocation
CALL CCG_MM3x( NPIX, NLINES, STACK, MINPIX, RESULT, WRK1, POINT,
USED, NCON, NBAD, STATUS )
Arguments
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.
MINPIX = INTEGER (Given)
The minimum number of pixels
required to contribute to an output pixel.
RESULT( NPIX ) = ? (Returned)
The output
line of data.
WRK1( 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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