CCG_SUM3x - Combines data lines using the sum of values

Description:

This routine accepts an array consisting of a series of (vectorised) lines of data. The data values in the lines are then summed. The output sums are returned in the array RESULT.

Invocation:

CALL CCG_SUM3x( NPIX, NLINES, STACK, MINPIX, RESULT, 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.

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 each numeric data type: replace "x" in the routine name by D, R, I, W, UW, B or UB as appropriate. The STACK and RESULT arguments supplied to the routine must have the data type specified. It is not wise to choose an integer type as the chances of overflow are high.