*-----------------------------------------------------------------------
*     Copyright (C) 2000-2022 GFD Dennou Club. All rights reserved.
*-----------------------------------------------------------------------
      PROGRAM U2D1

      PARAMETER( NX=37, NY=37 )
      PARAMETER( XMIN=0, XMAX=360, YMIN=-90, YMAX=90 )
      PARAMETER( PI=3.14159, DRAD=PI/180 )
      REAL P(NX,NY)

      DO 10 J=1,NY
      DO 10 I=1,NX
        ALON = ( XMIN + (XMAX-XMIN)*(I-1)/(NX-1) ) * DRAD
        ALAT = ( YMIN + (YMAX-YMIN)*(J-1)/(NY-1) ) * DRAD
        SLAT = SIN(ALAT)
        P(I,J) = 3*SQRT(1-SLAT**2)*SLAT*COS(ALON) - 0.5*(3*SLAT**2-1)
   10 CONTINUE

      WRITE(*,*) ' WORKSTATION ID (I)  ? ;'
      CALL SGPWSN
      READ (*,*) IWS

      CALL GROPN( IWS )
      CALL GRFRM

      CALL GRSWND( XMIN, XMAX, YMIN, YMAX )
      CALL GRSVPT(  0.2,  0.8,  0.2,  0.8 )
      CALL GRSTRN( 1 )
      CALL GRSTRF

      CALL USDAXS
      CALL UDSFMT( '(F4.1)' )
      CALL UDGCLA( 0., 1.4, 0.2 )
      CALL UDSCLV( -1., 3, 4, 'abc', 0.028 )
      CALL UDDCLV( 0.6 )
      CALL UDCNTR( P, NX, NX, NY )

      CALL GRCLS

      END
