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SUBROUTINE VISSS (FU, MP,MT, J1,J2,NP, I1,I2,NT, L,M, Q, B, S, O,
X PR2, PL2)
C$ (Spherical Sequence)
C$ FU(NP,NT)......Array of function values.
C$ (MP,MT)........Actual declared dimensions of FU(*,*).
C$ (J1,J2)........Interval of PHI indices to be graphed.
C$ (I1,I2)........Interval of THETA indices to be graphed
C$ L..............Direction of view and increment (+: west,
C$ -: east)
C$ M..............Direction of view and increment (+: south,
C$ -: north)
C$ Q..............According to the orientation of each
C$ infinitesimal rectangle to the line of sight
C$ and search direction its edges will form
C$ part of the horizon or not.
C$ B..............(ATAN2 cut line does not fall in quadrant
C$ being graphed).
C$ S...............= 1.0, graph FU positive; = -1.0, graph FU
C$ negative.
C$ O(3,3).........Orthogonal rotation matrix.
C$ PR2............2-D projection subroutine.
C$ PL2............2-D pen movement subroutine.
C$ (09-APR-82)