1 | !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! |
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2 | ! |
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3 | ! This routine is the driver for computing the addresses and weights |
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4 | ! for interpolating between two grids on a sphere. |
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5 | ! |
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6 | ! Modified slightly to get name of namelist file from command line - sga 2/12/05 |
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7 | ! |
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8 | !----------------------------------------------------------------------- |
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9 | ! |
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10 | ! CVS:$Id$ |
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11 | ! |
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12 | ! Copyright (c) 1997, 1998 the Regents of the University of |
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13 | ! California. |
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14 | ! |
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15 | ! This software and ancillary information (herein called software) |
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16 | ! called SCRIP is made available under the terms described here. |
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17 | ! The software has been approved for release with associated |
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18 | ! LA-CC Number 98-45. |
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19 | ! |
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20 | ! Unless otherwise indicated, this software has been authored |
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21 | ! by an employee or employees of the University of California, |
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22 | ! operator of the Los Alamos National Laboratory under Contract |
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23 | ! No. W-7405-ENG-36 with the U.S. Department of Energy. The U.S. |
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24 | ! Government has rights to use, reproduce, and distribute this |
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25 | ! software. The public may copy and use this software without |
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26 | ! charge, provided that this Notice and any statement of authorship |
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27 | ! are reproduced on all copies. Neither the Government nor the |
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28 | ! University makes any warranty, express or implied, or assumes |
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29 | ! any liability or responsibility for the use of this software. |
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30 | ! |
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31 | ! If software is modified to produce derivative works, such modified |
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32 | ! software should be clearly marked, so as not to confuse it with |
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33 | ! the version available from Los Alamos National Laboratory. |
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34 | ! |
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35 | !*********************************************************************** |
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36 | |
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37 | program scrip |
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38 | |
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39 | !----------------------------------------------------------------------- |
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40 | |
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41 | use kinds_mod ! module defining data types |
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42 | use constants ! module for common constants |
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43 | use iounits ! I/O unit manager |
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44 | use timers ! CPU timers |
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45 | use grids ! module with grid information |
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46 | use remap_vars ! common remapping variables |
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47 | use remap_conservative ! routines for conservative remap |
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48 | use remap_distance_weight ! routines for dist-weight remap |
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49 | use remap_bilinear ! routines for bilinear interp |
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50 | use remap_bicubic ! routines for bicubic interp |
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51 | use remap_write ! routines for remap output |
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52 | |
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53 | implicit none |
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54 | |
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55 | !----------------------------------------------------------------------- |
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56 | ! |
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57 | ! input namelist variables |
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58 | ! |
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59 | !----------------------------------------------------------------------- |
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60 | |
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61 | character (char_len) :: & |
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62 | grid1_file, & ! filename of grid file containing grid1 |
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63 | grid2_file, & ! filename of grid file containing grid2 |
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64 | interp_file1, & ! filename for output remap data (map1) |
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65 | interp_file2, & ! filename for output remap data (map2) |
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66 | map1_name, & ! name for mapping from grid1 to grid2 |
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67 | map2_name, & ! name for mapping from grid2 to grid1 |
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68 | map_method, & ! choice for mapping method |
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69 | normalize_opt, & ! option for normalizing weights |
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70 | output_opt ! option for output conventions |
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71 | |
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72 | integer (kind=int_kind) :: & |
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73 | nmap ! number of mappings to compute (1 or 2) |
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74 | |
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75 | namelist /remap_inputs/ grid1_file, grid2_file, & |
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76 | interp_file1, interp_file2, & |
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77 | map1_name, map2_name, num_maps, & |
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78 | luse_grid1_area, luse_grid2_area, & |
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79 | map_method, normalize_opt, output_opt, & |
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80 | restrict_type, num_srch_bins |
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81 | |
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82 | !----------------------------------------------------------------------- |
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83 | ! |
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84 | ! local variables |
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85 | ! |
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86 | !----------------------------------------------------------------------- |
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87 | |
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88 | integer (kind=int_kind) :: n, & ! dummy counter |
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89 | iunit ! unit number for namelist file |
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90 | |
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91 | character (char_len) :: nm_in |
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92 | #if defined ARGC |
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93 | integer :: iargc |
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94 | external iargc |
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95 | |
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96 | if (iargc() == 1) then |
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97 | call getarg(1, nm_in) |
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98 | else |
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99 | write(6,*) 'need name of namelist file' |
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100 | stop |
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101 | endif |
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102 | #else |
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103 | write(6,*) 'enter name for namelist file' |
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104 | read(5,*) nm_in |
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105 | #endif |
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106 | |
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107 | !----------------------------------------------------------------------- |
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108 | ! |
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109 | ! initialize timers |
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110 | ! |
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111 | !----------------------------------------------------------------------- |
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112 | |
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113 | call timers_init |
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114 | do n=1,max_timers |
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115 | call timer_clear(n) |
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116 | end do |
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117 | |
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118 | !----------------------------------------------------------------------- |
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119 | ! |
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120 | ! read input namelist |
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121 | ! |
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122 | !----------------------------------------------------------------------- |
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123 | |
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124 | grid1_file = 'unknown' |
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125 | grid2_file = 'unknown' |
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126 | interp_file1 = 'unknown' |
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127 | interp_file2 = 'unknown' |
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128 | map1_name = 'unknown' |
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129 | map2_name = 'unknown' |
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130 | luse_grid1_area = .false. |
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131 | luse_grid2_area = .false. |
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132 | num_maps = 2 |
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133 | map_type = 1 |
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134 | normalize_opt = 'fracarea' |
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135 | output_opt = 'scrip' |
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136 | restrict_type = 'latitude' |
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137 | num_srch_bins = 900 |
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138 | |
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139 | call get_unit(iunit) |
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140 | open(iunit, file=nm_in, status='old', form='formatted') |
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141 | read(iunit, nml=remap_inputs) |
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142 | call release_unit(iunit) |
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143 | |
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144 | select case(map_method) |
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145 | case ('conservative') |
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146 | map_type = map_type_conserv |
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147 | luse_grid_centers = .false. |
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148 | case ('bilinear') |
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149 | map_type = map_type_bilinear |
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150 | luse_grid_centers = .true. |
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151 | case ('bicubic') |
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152 | map_type = map_type_bicubic |
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153 | luse_grid_centers = .true. |
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154 | case ('distwgt') |
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155 | map_type = map_type_distwgt |
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156 | luse_grid_centers = .true. |
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157 | case default |
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158 | stop 'unknown mapping method' |
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159 | end select |
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160 | |
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161 | select case(normalize_opt(1:4)) |
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162 | case ('none') |
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163 | norm_opt = norm_opt_none |
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164 | case ('frac') |
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165 | norm_opt = norm_opt_frcarea |
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166 | case ('dest') |
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167 | norm_opt = norm_opt_dstarea |
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168 | case default |
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169 | stop 'unknown normalization option' |
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170 | end select |
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171 | |
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172 | !----------------------------------------------------------------------- |
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173 | ! |
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174 | ! initialize grid information for both grids |
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175 | ! |
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176 | !----------------------------------------------------------------------- |
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177 | |
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178 | call grid_init(grid1_file, grid2_file) |
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179 | |
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180 | write(stdout, *) ' Computing remappings between: ',grid1_name |
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181 | write(stdout, *) ' and ',grid2_name |
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182 | |
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183 | !----------------------------------------------------------------------- |
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184 | ! |
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185 | ! initialize some remapping variables. |
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186 | ! |
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187 | !----------------------------------------------------------------------- |
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188 | |
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189 | call init_remap_vars |
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190 | |
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191 | !----------------------------------------------------------------------- |
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192 | ! |
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193 | ! call appropriate interpolation setup routine based on type of |
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194 | ! remapping requested. |
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195 | ! |
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196 | !----------------------------------------------------------------------- |
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197 | |
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198 | select case(map_type) |
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199 | case(map_type_conserv) |
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200 | call remap_conserv |
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201 | case(map_type_bilinear) |
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202 | call remap_bilin |
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203 | case(map_type_distwgt) |
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204 | call remap_distwgt |
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205 | case(map_type_bicubic) |
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206 | call remap_bicub |
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207 | case default |
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208 | stop 'Invalid Map Type' |
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209 | end select |
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210 | |
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211 | !----------------------------------------------------------------------- |
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212 | ! |
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213 | ! reduce size of remapping arrays and then write remapping info |
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214 | ! to a file. |
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215 | ! |
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216 | !----------------------------------------------------------------------- |
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217 | |
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218 | if (num_links_map1 /= max_links_map1) then |
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219 | call resize_remap_vars(1, num_links_map1-max_links_map1) |
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220 | endif |
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221 | if ((num_maps > 1) .and. (num_links_map2 /= max_links_map2)) then |
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222 | call resize_remap_vars(2, num_links_map2-max_links_map2) |
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223 | endif |
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224 | |
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225 | call write_remap(map1_name, map2_name, & |
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226 | interp_file1, interp_file2, output_opt) |
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227 | |
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228 | !----------------------------------------------------------------------- |
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229 | |
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230 | end program scrip |
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231 | |
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232 | !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! |
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