SUBROUTINE UNGRIDB( NCOLS, NROWS, XORIG, YORIG, XCELL, YCELL,
& NPTS, XLOC, YLOC, NU, CU )
INTEGER NCOLS, NROWS ! number of grid columns, rows
REAL*8 XORIG, YORIG ! X,Y coords of LL grid corner
REAL*8 XCELL, YCELL ! X,Y direction cell size
INTEGER NPTS ! number of (point-source) locations
REAL XLOC( NPTS ) ! X point coordinates
REAL YLOC( NPTS ) ! Y point coordinates
INTEGER NU( 4,NPTS ) ! single-indexed subscripts into grid
REAL CU( 4,NPTS ) ! coefficients
{ <XLOC(S),YLOC(S)>, S=1, ..., NPTS }More detail on the computation of these coefficients, etc., is given in the section on BMATVEC().
See also subroutines
BMATVEC and BILIN, DMATVEC, PMATVEC, and SMATVECand programs
MTXBLEND, MTXBUILD, MTXCALC, MTXCPLE.
Up: Coordinate and Grid Related Routines
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