[2136] | 1 | ! |
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| 2 | MODULE agrif_modutil |
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| 3 | ! |
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| 4 | CONTAINS |
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| 5 | ! |
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| 6 | !************************************************************************ |
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| 7 | ! * |
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| 8 | ! MODULE AGRIF_MODUTIL * |
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| 9 | ! * |
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| 10 | ! module containing subroutine used for : * |
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| 11 | ! - unrolling 2D arrays to 1D arrays (required for SCRIP package use) * |
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| 12 | ! - convert 1D arrays to 2D arrays (required for SCRIP package use) * |
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| 13 | ! - remapping process (use SCRIP remapping matrix) * |
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| 14 | ! * |
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| 15 | !************************************************************************ |
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| 16 | ! |
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| 17 | !*********************************************************** |
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| 18 | SUBROUTINE ssort (x, nb) |
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| 19 | !*********************************************************** |
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| 20 | ! |
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| 21 | IMPLICIT NONE |
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| 22 | |
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| 23 | INTEGER :: nb |
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| 24 | REAL*8, DIMENSION(:) :: x |
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| 25 | REAL*8 :: temp |
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| 26 | INTEGER ji,jj,jmax,itemp |
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| 27 | ! |
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| 28 | jmax=nb-1 |
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| 29 | ! |
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| 30 | ! |
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| 31 | DO ji=1,nb-1 |
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| 32 | temp=HUGE(1) |
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| 33 | |
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| 34 | DO jj=1,jmax |
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| 35 | |
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| 36 | IF(X(jj).LE.X(jj+1)) THEN |
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| 37 | temp=X(jj) |
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| 38 | X(jj)=X(jj+1) |
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| 39 | X(jj+1)=temp |
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| 40 | ENDIF |
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| 41 | |
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| 42 | ENDDO |
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| 43 | |
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| 44 | IF(temp.EQ.HUGE(1)) RETURN |
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| 45 | jmax=jmax-1 |
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| 46 | ENDDO |
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| 47 | |
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| 48 | RETURN |
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| 49 | END SUBROUTINE ssort |
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| 50 | ! |
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| 51 | !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! |
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| 52 | !************************************************************************ |
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| 53 | ! SUBROUTINE 1Dto2D |
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| 54 | !************************************************************************ |
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| 55 | !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! |
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| 56 | |
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| 57 | SUBROUTINE tab1Dto2D(tab1D,tab2D,nx,ny) |
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| 58 | ! |
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| 59 | IMPLICIT NONE |
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| 60 | ! |
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| 61 | REAL*8,DIMENSION(:) :: tab1D |
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| 62 | REAL*8,DIMENSION(:,:) :: tab2D |
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| 63 | ! |
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| 64 | INTEGER :: xpos,ypos |
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| 65 | INTEGER :: nx,ny |
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| 66 | INTEGER :: i |
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| 67 | ! |
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| 68 | xpos=0 |
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| 69 | ypos=1 |
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| 70 | ! |
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| 71 | DO i=1,nx*ny |
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| 72 | xpos=xpos+1 |
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| 73 | IF(xpos.GT.nx) THEN |
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| 74 | xpos=1 |
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| 75 | ypos=ypos+1 |
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| 76 | ENDIF |
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| 77 | tab2D(ypos,xpos)=tab1D(i) |
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| 78 | END DO |
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| 79 | ! |
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| 80 | END SUBROUTINE tab1Dto2D |
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| 81 | |
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| 82 | !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! |
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| 83 | !************************************************************************ |
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| 84 | ! SUBROUTINE tab2Dto1D |
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| 85 | !************************************************************************ |
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| 86 | !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! |
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| 87 | |
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| 88 | SUBROUTINE tab2Dto1D(tab2D,tab1D) |
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| 89 | ! |
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| 90 | IMPLICIT NONE |
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| 91 | ! |
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| 92 | REAL*8,DIMENSION(:,:) :: tab2D |
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| 93 | REAL*8,DIMENSION(:) :: tab1D |
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| 94 | ! |
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| 95 | INTEGER :: xpos,ypos |
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| 96 | INTEGER :: nx,ny |
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| 97 | INTEGER :: i |
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| 98 | ! |
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| 99 | nx = SIZE(tab2D,2) |
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| 100 | ny = SIZE(tab2D,1) |
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| 101 | ! |
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| 102 | xpos = 0 |
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| 103 | ypos = 1 |
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| 104 | DO i = 1,nx*ny |
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| 105 | xpos = xpos + 1 |
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| 106 | IF(xpos.GT.nx) THEN |
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| 107 | xpos = 1 |
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| 108 | ypos = ypos + 1 |
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| 109 | END IF |
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| 110 | tab1D(i) = tab2D(ypos,xpos) |
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| 111 | END DO |
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| 112 | ! |
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| 113 | END SUBROUTINE tab2Dto1D |
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| 114 | |
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| 115 | |
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| 116 | !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! |
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| 117 | !************************************************************************ |
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| 118 | ! SUBROUTINE tab2Dto1D logical |
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| 119 | !************************************************************************ |
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| 120 | !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! |
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| 121 | |
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| 122 | SUBROUTINE logtab2Dto1D(tab2D,tab1D) |
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| 123 | ! |
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| 124 | IMPLICIT NONE |
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| 125 | ! |
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| 126 | LOGICAL,DIMENSION(:,:) :: tab2D |
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| 127 | LOGICAL,DIMENSION(:) :: tab1D |
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| 128 | ! |
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| 129 | INTEGER :: xpos,ypos |
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| 130 | INTEGER :: nx,ny |
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| 131 | INTEGER :: i |
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| 132 | ! |
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| 133 | nx = SIZE(tab2D,2) |
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| 134 | ny = SIZE(tab2D,1) |
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| 135 | ! |
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| 136 | xpos = 0 |
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| 137 | ypos = 1 |
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| 138 | DO i = 1,nx*ny |
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| 139 | xpos = xpos + 1 |
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| 140 | IF(xpos.GT.nx) THEN |
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| 141 | xpos = 1 |
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| 142 | ypos = ypos + 1 |
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| 143 | END IF |
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| 144 | tab1D(i) = tab2D(ypos,xpos) |
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| 145 | END DO |
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| 146 | ! |
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| 147 | END SUBROUTINE logtab2Dto1D |
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| 148 | ! |
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| 149 | !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! |
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| 150 | !************************************************************************ |
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| 151 | ! SUBROUTINE 1Dto2D |
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| 152 | !************************************************************************ |
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| 153 | !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! |
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| 154 | |
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| 155 | SUBROUTINE logtab1Dto2D(tab1D,tab2D,nx,ny) |
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| 156 | ! |
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| 157 | IMPLICIT NONE |
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| 158 | ! |
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| 159 | LOGICAL,DIMENSION(:) :: tab1D |
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| 160 | LOGICAL,DIMENSION(:,:) :: tab2D |
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| 161 | ! |
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| 162 | INTEGER :: xpos,ypos |
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| 163 | INTEGER :: nx,ny |
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| 164 | INTEGER :: i |
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| 165 | ! |
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| 166 | xpos=0 |
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| 167 | ypos=1 |
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| 168 | ! |
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| 169 | DO i=1,nx*ny |
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| 170 | xpos=xpos+1 |
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| 171 | IF(xpos.GT.nx) THEN |
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| 172 | xpos=1 |
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| 173 | ypos=ypos+1 |
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| 174 | ENDIF |
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| 175 | tab2D(ypos,xpos)=tab1D(i) |
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| 176 | END DO |
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| 177 | ! |
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| 178 | END SUBROUTINE logtab1Dto2D |
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| 179 | |
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| 180 | !************************************************************** |
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| 181 | ! subroutine make_remap |
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| 182 | !************************************************************** |
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| 183 | ! |
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| 184 | SUBROUTINE make_remap(tabin,tabout,nxfin,nyfin,matrix,src_add,dst_add) |
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| 185 | ! |
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| 186 | IMPLICIT NONE |
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| 187 | ! |
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| 188 | REAL*8, DIMENSION(:,:) :: tabin |
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| 189 | REAL*8, DIMENSION(:,:) :: tabout |
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| 190 | REAL*8, POINTER, DIMENSION(:,:) :: tabtemp |
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| 191 | INTEGER,DIMENSION(:) :: src_add,dst_add |
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| 192 | INTEGER :: nxfin,nyfin |
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| 193 | REAL*8, POINTER, DIMENSION(:) :: var1D,var_interp1D |
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| 194 | REAL*8,DIMENSION(:,:) :: matrix |
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| 195 | INTEGER :: num_links,i |
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| 196 | ! |
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| 197 | ALLOCATE(var1D(SIZE(tabin,1)*SIZE(tabin,2))) |
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| 198 | CALL tab2Dto1D(tabin,var1D) |
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| 199 | ! |
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| 200 | ALLOCATE(var_interp1D(nxfin*nyfin)) |
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| 201 | var_interp1D = 0.0 |
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| 202 | num_links = SIZE(dst_add) |
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| 203 | ! |
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| 204 | DO i = 1,num_links |
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| 205 | var_interp1D(dst_add(i)) = var_interp1D(dst_add(i)) & |
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| 206 | + matrix(1,i)*var1D(src_add(i)) |
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| 207 | END DO |
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| 208 | ! |
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| 209 | ALLOCATE(tabtemp(SIZE(tabout,1),SIZE(tabout,2))) |
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| 210 | ! |
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| 211 | CALL tab1Dto2D(var_interp1D,tabtemp,nyfin,nxfin) |
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| 212 | ! |
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| 213 | tabout = tabtemp |
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| 214 | ! |
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| 215 | DEALLOCATE(var_interp1D,var1D,tabtemp) |
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| 216 | ! |
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| 217 | END SUBROUTINE make_remap |
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| 218 | ! |
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| 219 | ! |
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| 220 | !************************************************************** |
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| 221 | ! end subroutine make_remap |
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| 222 | !************************************************************** |
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| 223 | ! |
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| 224 | ! |
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| 225 | !************************************************************** |
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| 226 | ! subroutine make_bicubic_remap |
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| 227 | !************************************************************** |
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| 228 | ! |
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| 229 | SUBROUTINE make_bicubic_remap(tabin,masksrc,tabout,nxfin,nyfin,matrix,src_add,dst_add) |
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| 230 | ! |
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| 231 | IMPLICIT NONE |
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| 232 | ! |
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| 233 | REAL*8, DIMENSION(:,:) :: tabin |
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| 234 | LOGICAL, DIMENSION(:,:) :: masksrc |
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| 235 | LOGICAL, POINTER, DIMENSION(:) :: grid1_mask |
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| 236 | REAL*8, DIMENSION(:,:) :: tabout |
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| 237 | INTEGER,DIMENSION(:) :: src_add,dst_add |
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| 238 | INTEGER :: nxfin,nyfin |
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| 239 | REAL*8, POINTER, DIMENSION(:) :: var1D,var_interp1D,gradi,gradj,gradij,deriv1,deriv2 |
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| 240 | REAL*8,DIMENSION(:,:) :: matrix |
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| 241 | INTEGER :: num_links,i,j,nx,ny,n,ip1,im1,jp1,jm1 |
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| 242 | INTEGER :: in,is,ie,iw,ine,inw,ise,isw |
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| 243 | REAL*8 :: delew,delns |
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| 244 | ! |
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| 245 | nx = SIZE(tabin,1) |
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| 246 | ny = SIZE(tabin,2) |
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| 247 | ALLOCATE(gradi(nx*ny),gradj(nx*ny),gradij(nx*ny),deriv1(nx*ny),deriv2(nx*ny)) |
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| 248 | ALLOCATE(var1D(nx*ny),grid1_mask(nx*ny)) |
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| 249 | ! |
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| 250 | CALL tab2Dto1D(tabin,var1D) |
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| 251 | CALL logtab2Dto1D(masksrc,grid1_mask) |
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| 252 | ! |
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| 253 | gradi = 0.0 |
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| 254 | gradj = 0.0 |
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| 255 | gradij = 0.0 |
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| 256 | ! |
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| 257 | DO n = 1,nx*ny |
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| 258 | |
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| 259 | IF( grid1_mask(n) ) THEN |
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| 260 | ! |
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| 261 | delew = 0.5 |
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| 262 | delns = 0.5 |
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| 263 | |
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| 264 | j = (n-1)/ny + 1 |
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| 265 | i = n - (j-1)*ny |
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| 266 | ! |
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| 267 | ip1 = i+1 |
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| 268 | im1 = i-1 |
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| 269 | jp1 = j+1 |
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| 270 | jm1 = j-1 |
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| 271 | ! |
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| 272 | IF (ip1 > ny) ip1 = ip1 - ny |
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| 273 | |
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| 274 | IF (im1 < 1 ) im1 = ny |
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| 275 | |
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| 276 | IF (jp1 > nx) THEN |
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| 277 | jp1 = j |
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| 278 | delns = 1. |
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| 279 | ENDIF |
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| 280 | |
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| 281 | IF (jm1 < 1 ) THEN |
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| 282 | jm1 = j |
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| 283 | delns = 1. |
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| 284 | ENDIF |
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| 285 | ! |
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| 286 | in = (jp1-1)*ny + i |
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| 287 | is = (jm1-1)*ny + i |
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| 288 | ie = (j -1)*ny + ip1 |
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| 289 | iw = (j -1)*ny + im1 |
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| 290 | ! |
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| 291 | ine = (jp1-1)*ny + ip1 |
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| 292 | inw = (jp1-1)*ny + im1 |
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| 293 | ise = (jm1-1)*ny + ip1 |
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| 294 | isw = (jm1-1)*ny + im1 |
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| 295 | ! |
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| 296 | !*** compute i-gradient |
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| 297 | |
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| 298 | IF (.NOT. grid1_mask(ie)) THEN |
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| 299 | ie = n |
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| 300 | delew = 1. |
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| 301 | ENDIF |
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| 302 | ! |
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| 303 | IF (.NOT. grid1_mask(iw)) THEN |
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| 304 | iw = n |
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| 305 | delew = 1. |
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| 306 | ENDIF |
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| 307 | ! |
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| 308 | gradi(n) = delew*(var1D(ie) - var1D(iw)) |
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| 309 | ! |
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| 310 | !*** compute j-gradient |
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| 311 | |
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| 312 | IF (.NOT. grid1_mask(in)) THEN |
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| 313 | in = n |
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| 314 | delns = 1. |
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| 315 | ENDIF |
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| 316 | ! |
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| 317 | IF (.NOT. grid1_mask(is)) THEN |
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| 318 | is = n |
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| 319 | delns = 1. |
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| 320 | ENDIF |
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| 321 | ! |
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| 322 | gradj(n) = delns*(var1D(in) - var1D(is)) |
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| 323 | ! |
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| 324 | !*** compute ij-gradient |
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| 325 | |
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| 326 | delew = 0.5 |
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| 327 | |
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| 328 | IF (jp1 == j .OR. jm1 == j) THEN |
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| 329 | delns = 1. |
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| 330 | ELSE |
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| 331 | delns = 0.5 |
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| 332 | ENDIF |
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| 333 | ! |
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| 334 | IF (.NOT. grid1_mask(ine)) THEN |
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| 335 | IF (in /= n) THEN |
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| 336 | ine = in |
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| 337 | delew = 1. |
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| 338 | ELSE IF (ie /= n) THEN |
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| 339 | ine = ie |
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| 340 | inw = iw |
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| 341 | IF (inw == n) delew = 1. |
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| 342 | delns = 1. |
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| 343 | ELSE |
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| 344 | ine = n |
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| 345 | inw = iw |
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| 346 | delew = 1 |
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| 347 | delns = 1 |
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| 348 | ENDIF |
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| 349 | ENDIF |
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| 350 | ! |
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| 351 | IF (.NOT. grid1_mask(inw)) THEN |
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| 352 | IF (in /= n) THEN |
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| 353 | inw = in |
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| 354 | delew = 1. |
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| 355 | ELSE IF (iw /= n) THEN |
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| 356 | inw = iw |
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| 357 | ine = ie |
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| 358 | IF (ie == n) delew = 1. |
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| 359 | delns = 1. |
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| 360 | ELSE |
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| 361 | inw = n |
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| 362 | ine = ie |
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| 363 | delew = 1. |
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| 364 | delns = 1. |
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| 365 | ENDIF |
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| 366 | ENDIF |
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| 367 | ! |
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| 368 | deriv1(n) = delew*(var1D(ine)-var1D(inw)) |
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| 369 | ! |
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| 370 | IF (.NOT. grid1_mask(ise)) THEN |
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| 371 | IF (is /= n) THEN |
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| 372 | ise = is |
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| 373 | delew = 1. |
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| 374 | ELSE IF (ie /= n) THEN |
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| 375 | ise = ie |
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| 376 | isw = iw |
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| 377 | IF (isw == n) delew = 1. |
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| 378 | delns = 1. |
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| 379 | ELSE |
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| 380 | ise = n |
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| 381 | isw = iw |
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| 382 | delew = 1. |
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| 383 | delns = 1. |
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| 384 | ENDIF |
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| 385 | ENDIF |
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| 386 | ! |
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| 387 | IF (.NOT. grid1_mask(isw)) THEN |
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| 388 | IF (is /= n) THEN |
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| 389 | isw = is |
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| 390 | delew = 1. |
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| 391 | ELSE IF (iw /= n) THEN |
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| 392 | isw = iw |
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| 393 | ise = ie |
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| 394 | IF (ie == n) delew = 1. |
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| 395 | delns = 1. |
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| 396 | ELSE |
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| 397 | isw = n |
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| 398 | ise = ie |
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| 399 | delew = 1. |
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| 400 | delns = 1. |
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| 401 | ENDIF |
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| 402 | ENDIF |
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| 403 | |
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| 404 | deriv2(n) = delew*(var1D(ise) - var1D(isw)) |
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| 405 | gradij(n) = delns*(deriv1(n) - deriv2(n)) |
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| 406 | ENDIF |
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| 407 | END DO |
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| 408 | ! |
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| 409 | DEALLOCATE(deriv1,deriv2,grid1_mask) |
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| 410 | |
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| 411 | ! |
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| 412 | ALLOCATE(var_interp1D(nxfin*nyfin)) |
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| 413 | var_interp1D = 0.0 |
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| 414 | num_links = SIZE(dst_add) |
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| 415 | ! |
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| 416 | DO i = 1,num_links |
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| 417 | ! |
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| 418 | var_interp1D(dst_add(i)) = var_interp1D(dst_add(i)) + & |
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| 419 | matrix(1,i)*var1D(src_add(i)) + & |
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| 420 | matrix(2,i)*gradi(src_add(i)) + & |
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| 421 | matrix(3,i)*gradj(src_add(i)) + & |
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| 422 | matrix(4,i)*gradij(src_add(i)) |
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| 423 | END DO |
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| 424 | ! |
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| 425 | DEALLOCATE(gradi,gradj,gradij,var1D) |
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| 426 | ! |
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| 427 | CALL tab1Dto2D(var_interp1D,tabout,nyfin,nxfin) |
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| 428 | ! |
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| 429 | DEALLOCATE(var_interp1D) |
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| 430 | ! |
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| 431 | END SUBROUTINE make_bicubic_remap |
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| 432 | ! |
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| 433 | ! |
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| 434 | !************************************************************** |
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| 435 | ! end subroutine make_bicubic_remap |
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| 436 | !************************************************************** |
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| 437 | ! |
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| 438 | ! |
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| 439 | END MODULE agrif_modutil |
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