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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