1 | PROGRAM ncregular |
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2 | ! |
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3 | !$Id$ |
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4 | !- |
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5 | ! This software is governed by the CeCILL license |
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6 | ! See IOIPSL/IOIPSL_License_CeCILL.txt |
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7 | !--------------------------------------------------------------------- |
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8 | !- This code replaces a 2D surface grid by vectors. |
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9 | !- Obviously it only works if you have a regular grid. |
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10 | !- |
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11 | !- Jan Polcher (polcher@lmd.jussieu.fr) |
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12 | !- Jacques Bellier (jacques.bellier@cea.fr) |
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13 | !--------------------------------------------------------------------- |
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14 | USE netcdf |
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15 | !- |
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16 | IMPLICIT NONE |
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17 | !- |
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18 | INTEGER :: iread, if, in, iv, sz |
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19 | INTEGER :: ier, nb_files, iret, ndims, nvars, nb_glat |
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20 | INTEGER :: lon_dim_id, lat_dim_id |
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21 | INTEGER :: lon_len, lat_len, lon_id, lat_id |
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22 | INTEGER :: nav_lon_id, nav_lat_id |
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23 | INTEGER :: alloc_stat_lon, alloc_stat_lat |
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24 | !- |
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25 | INTEGER,ALLOCATABLE :: file_id(:), tax_id(:) |
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26 | CHARACTER(LEN=80),ALLOCATABLE :: names(:) |
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27 | CHARACTER(LEN=80) :: dim_name |
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28 | CHARACTER(LEN=80) :: varname |
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29 | CHARACTER(LEN=20) :: xname, yname, lonname, latname |
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30 | LOGICAL :: check, regular |
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31 | !- |
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32 | REAL,ALLOCATABLE :: lon(:), lat(:), lon2(:), lat2(:) |
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33 | REAL,ALLOCATABLE :: del_lon(:), del_lat(:) |
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34 | !- |
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35 | INTEGER iargc, getarg |
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36 | EXTERNAL iargc, getarg |
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37 | !--------------------------------------------------------------------- |
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38 | alloc_stat_lon = 0 |
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39 | alloc_stat_lat = 0 |
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40 | !- |
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41 | iread = iargc() |
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42 | !- |
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43 | ALLOCATE (names(iread),stat=ier) |
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44 | IF (ier /= 0) THEN |
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45 | WRITE (*,*) ' Could not allocate names of size ', iread |
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46 | STOP 'nctax' |
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47 | ENDIF |
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48 | !- |
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49 | CALL nct_getarg (iread, nb_files, names, check, & |
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50 | & xname, yname, lonname, latname) |
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51 | !- |
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52 | ! Allocate space |
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53 | !- |
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54 | ALLOCATE (file_id(nb_files),stat=ier) |
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55 | IF (ier /= 0) THEN |
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56 | WRITE (*,*) ' Could not allocate file_id of size ', nb_files |
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57 | STOP 'nctax' |
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58 | ENDIF |
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59 | !- |
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60 | ALLOCATE (tax_id(nb_files),stat=ier) |
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61 | IF (ier /= 0) THEN |
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62 | WRITE (*,*) ' Could not allocate tax_id of size ', nb_files |
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63 | STOP 'nctax' |
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64 | ENDIF |
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65 | !- |
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66 | DO if=1,nb_files |
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67 | !--- |
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68 | IF (check) THEN |
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69 | WRITE(*,*) 'ncregular : ', if, names(if) |
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70 | ENDIF |
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71 | !--- |
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72 | iret = NF90_OPEN (names(if),NF90_WRITE,file_id(if)) |
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73 | iret = NF90_INQUIRE (file_id(if),ndims,nvars,nb_glat,tax_id(if)) |
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74 | !--- |
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75 | !-- Get the IDs of the variables |
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76 | !--- |
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77 | lon_len = -9999 |
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78 | lat_len = -9999 |
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79 | DO in=1,ndims |
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80 | !----- |
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81 | iret = NF90_INQUIRE_DIMENSION (file_id(if), in, dim_name, sz) |
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82 | !----- |
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83 | IF ( (LEN_TRIM(dim_name) == 1) & |
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84 | & .AND.(INDEX(dim_name,TRIM(xname)) == 1) ) THEN |
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85 | lon_dim_id = in |
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86 | lon_len = sz |
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87 | ENDIF |
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88 | !----- |
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89 | IF ( (LEN_TRIM(dim_name) == 1) & |
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90 | & .AND.(INDEX(dim_name,TRIM(yname)) == 1) ) THEN |
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91 | lat_dim_id = in |
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92 | lat_len = sz |
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93 | ENDIF |
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94 | !----- |
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95 | ENDDO |
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96 | !--- |
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97 | IF ( (lon_len == -9999).OR.(lat_len == -9999) ) THEN |
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98 | WRITE(*,*) 'ncregular : The specified dimensions were not' |
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99 | WRITE(*,*) 'found in file : ',names(if) |
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100 | iret = NF90_CLOSE (file_id(if)) |
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101 | STOP |
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102 | ENDIF |
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103 | !--- |
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104 | IF (check) THEN |
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105 | WRITE(*,*) 'ncregular : lon_dim_id, lon_len',lon_dim_id,lon_len |
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106 | WRITE(*,*) 'ncregular : lat_dim_id, lat_len',lat_dim_id,lat_len |
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107 | ENDIF |
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108 | !--- |
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109 | !-- Look for the right variables |
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110 | !--- |
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111 | nav_lon_id = -9999 |
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112 | nav_lat_id = -9999 |
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113 | DO iv=1,nvars |
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114 | iret = NF90_INQUIRE_VARIABLE (file_id(if),iv,name=varname) |
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115 | IF (INDEX(varname,TRIM(lonname)) > 0) THEN |
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116 | nav_lon_id = iv |
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117 | ENDIF |
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118 | IF (INDEX(varname,TRIM(latname)) > 0) THEN |
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119 | nav_lat_id = iv |
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120 | ENDIF |
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121 | ENDDO |
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122 | !--- |
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123 | IF ( (nav_lon_id == -9999).OR.(nav_lat_id == -9999) ) THEN |
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124 | WRITE(*,*) 'ncregular : The specified coordinate fields' |
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125 | WRITE(*,*) 'were not found in file : ',names(if) |
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126 | iret = NF90_CLOSE (file_id(if)) |
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127 | STOP |
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128 | ENDIF |
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129 | !--- |
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130 | IF (check) THEN |
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131 | WRITE(*,*) 'ncregular : nav_lon_id :', nav_lon_id |
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132 | WRITE(*,*) 'ncregular : nav_lat_id :', nav_lat_id |
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133 | ENDIF |
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134 | !--- |
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135 | !-- Read variables from file and check if regular |
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136 | !--- |
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137 | !-- Do we have the variable to read the |
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138 | !--- |
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139 | IF ( alloc_stat_lon < lon_len) THEN |
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140 | IF ( alloc_stat_lon > 0) THEN |
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141 | deallocate(lon) |
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142 | deallocate(lon2) |
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143 | deallocate(del_lon) |
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144 | ENDIF |
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145 | allocate(lon(lon_len)) |
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146 | allocate(lon2(lon_len)) |
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147 | allocate(del_lon(lon_len)) |
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148 | alloc_stat_lon = lon_len |
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149 | ENDIF |
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150 | !--- |
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151 | IF ( alloc_stat_lat < lat_len) THEN |
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152 | IF ( alloc_stat_lat > 0) THEN |
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153 | deallocate(lat) |
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154 | deallocate(lat2) |
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155 | deallocate(del_lat) |
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156 | ENDIF |
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157 | allocate(lat(lat_len)) |
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158 | allocate(lat2(lat_len)) |
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159 | allocate(del_lat(lat_len)) |
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160 | alloc_stat_lat = lat_len |
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161 | ENDIF |
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162 | !--- |
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163 | !-- Read data |
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164 | !--- |
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165 | iret = NF90_GET_VAR (file_id(if),nav_lon_id,lon, & |
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166 | & start=(/1,1/),count=(/lon_len,1/),stride=(/1,1/)) |
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167 | iret = NF90_GET_VAR (file_id(if),nav_lon_id,lon2, & |
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168 | & start=(/1,int(lat_len/2)/),count=(/lon_len,1/),stride=(/1,1/)) |
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169 | del_lon = lon-lon2 |
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170 | !- |
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171 | iret = NF90_GET_VAR (file_id(if),nav_lat_id,lat, & |
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172 | & start=(/1,1/),count=(/1,lat_len/),stride=(/lon_len,1/)) |
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173 | iret = NF90_GET_VAR (file_id(if),nav_lat_id,lat2, & |
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174 | & start=(/int(lon_len/2),1/),count=(/1,lat_len/),stride=(/lon_len,1/)) |
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175 | del_lat = lat-lat2 |
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176 | !- |
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177 | regular = ( (MAXVAL(del_lon) < 0.001) & |
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178 | & .OR.(MAXVAL(del_lat) < 0.001) ) |
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179 | !--- |
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180 | !-- Create the new variables |
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181 | !--- |
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182 | IF (regular) THEN |
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183 | IF (check) THEN |
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184 | WRITE(*,*) 'Regular case' |
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185 | ENDIF |
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186 | iret = NF90_REDEF (file_id(if)) |
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187 | iret = NF90_RENAME_DIM (file_id(if), lon_dim_id, 'lon') |
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188 | iret = NF90_RENAME_DIM (file_id(if), lat_dim_id, 'lat') |
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189 | IF (check) THEN |
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190 | WRITE(*,*) 'Dimensions renamed' |
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191 | ENDIF |
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192 | iret = NF90_DEF_VAR (file_id(if), 'lon', NF90_FLOAT, & |
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193 | & lon_dim_id, lon_id) |
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194 | iret = NF90_DEF_VAR (file_id(if), 'lat', NF90_FLOAT, & |
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195 | & lat_dim_id, lat_id) |
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196 | IF (check) THEN |
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197 | WRITE(*,*) 'New variables defined' |
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198 | ENDIF |
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199 | !----- |
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200 | !---- Copy attributes |
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201 | !----- |
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202 | iret = NF90_COPY_ATT (file_id(if),nav_lon_id,'units', & |
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203 | & file_id(if),lon_id) |
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204 | iret = NF90_COPY_ATT (file_id(if),nav_lon_id,'title', & |
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205 | & file_id(if),lon_id) |
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206 | iret = NF90_COPY_ATT (file_id(if),nav_lon_id,'valid_max', & |
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207 | & file_id(if),lon_id) |
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208 | iret = NF90_COPY_ATT (file_id(if),nav_lon_id,'valid_min', & |
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209 | & file_id(if),lon_id) |
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210 | !----- |
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211 | iret = NF90_COPY_ATT (file_id(if),nav_lat_id,'units', & |
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212 | & file_id(if),lat_id) |
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213 | iret = NF90_COPY_ATT (file_id(if),nav_lat_id,'title', & |
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214 | & file_id(if),lat_id) |
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215 | iret = NF90_COPY_ATT (file_id(if),nav_lat_id,'valid_max', & |
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216 | & file_id(if),lat_id) |
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217 | iret = NF90_COPY_ATT (file_id(if),nav_lat_id,'valid_min', & |
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218 | & file_id(if),lat_id) |
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219 | !----- |
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220 | !---- Go into write mode |
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221 | !----- |
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222 | iret = NF90_ENDDEF (file_id(if)) |
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223 | !----- |
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224 | !---- Write data |
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225 | !----- |
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226 | iret = NF90_PUT_VAR (file_id(if),lon_id,lon(1:lon_len)) |
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227 | iret = NF90_PUT_VAR (file_id(if),lat_id,lat(1:lat_len)) |
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228 | !- |
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229 | iret = NF90_CLOSE (file_id(if)) |
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230 | ELSE |
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231 | WRITE(*,*) 'ncregular : Your grid is not regular' |
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232 | WRITE(*,*) names(if), 'remains unchanged' |
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233 | iret = NF90_CLOSE (file_id(if)) |
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234 | ENDIF |
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235 | !- |
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236 | ENDDO |
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237 | !-------------------- |
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238 | END PROGRAM ncregular |
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239 | !- |
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240 | !=== |
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241 | !- |
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242 | SUBROUTINE nct_getarg (argx, nb_files, names, check, & |
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243 | & xname, yname, lonname, latname) |
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244 | !--------------------------------------------------------------------- |
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245 | !- Read the arguments of nctax. |
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246 | !--------------------------------------------------------------------- |
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247 | INTEGER,INTENT(in) :: argx |
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248 | INTEGER, INTENT(out) :: nb_files |
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249 | CHARACTER(LEN=80),INTENT(out) :: names(argx) |
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250 | CHARACTER(LEN=20) :: xname, yname, lonname, latname |
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251 | !- |
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252 | CHARACTER(LEN=80) :: tmp, tmp_arg |
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253 | LOGICAL :: check |
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254 | !--------------------------------------------------------------------- |
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255 | check = .FALSE. |
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256 | !- |
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257 | ! Get the number of arguments |
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258 | !- |
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259 | nb_files = 0 |
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260 | !- |
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261 | xname = 'x' |
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262 | yname = 'y' |
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263 | lonname = 'nav_lon' |
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264 | latname = 'nav_lat' |
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265 | !- |
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266 | ! Go through the arguments and analyse them one by one |
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267 | !- |
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268 | IF (check) WRITE(*,*) 'Start going through the arguments' |
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269 | !- |
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270 | IF (argx == 0) THEN |
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271 | WRITE(*,*) 'To get usage : nctax -h ' |
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272 | STOP |
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273 | ENDIF |
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274 | !- |
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275 | iread = 1 |
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276 | DO WHILE (iread <= argx) |
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277 | iret = getarg(iread,tmp) |
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278 | IF (check) WRITE(*,*) ' iread, tmp :', iread, tmp |
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279 | SELECTCASE(tmp) |
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280 | CASE('-d') |
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281 | WRITE(*,*) 'DEBUG MODE SELECTED' |
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282 | check = .TRUE. |
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283 | iread = iread+1 |
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284 | CASE('-h') |
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285 | WRITE(*,*) 'Usage : nregular [options] file1 [file2 ...]' |
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286 | WRITE(*,*) ' -d : Verbose mode' |
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287 | WRITE(*,*) ' -h : This output' |
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288 | STOP |
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289 | CASE('-dim_lon') |
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290 | iread = iread+1 |
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291 | iret = getarg(iread,tmp_arg) |
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292 | xname = TRIM(tmp_arg) |
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293 | iread = iread+1 |
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294 | CASE('-dim_lat') |
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295 | iread = iread+1 |
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296 | iret = getarg(iread,tmp_arg) |
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297 | yname = TRIM(tmp_arg) |
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298 | iread = iread+1 |
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299 | CASE('-coo_lon') |
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300 | iread = iread+1 |
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301 | iret = getarg(iread,tmp_arg) |
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302 | lonname = TRIM(tmp_arg) |
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303 | iread = iread+1 |
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304 | CASE('-coo_lat') |
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305 | iread = iread+1 |
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306 | iret = getarg(iread,tmp_arg) |
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307 | latname = TRIM(tmp_arg) |
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308 | iread = iread+1 |
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309 | CASE DEFAULT |
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310 | IF (check) WRITE(*,*) 'nct_getarg : CASE default' |
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311 | IF (INDEX(tmp,'-') /= 1) THEN |
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312 | nb_files = nb_files+1 |
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313 | names(nb_files) = tmp |
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314 | iread = iread+1 |
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315 | ELSE |
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316 | WRITE(*,*) "WARNING Unknown option ",tmp |
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317 | WRITE(*,*) "For ore information : nctax -h" |
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318 | ENDIF |
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319 | END SELECT |
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320 | ENDDO |
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321 | !- |
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322 | IF (check) THEN |
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323 | WRITE(*,*) ' nct_getarg : output >> ' |
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324 | WRITE(*,*) '>> nb_files : ', nb_files |
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325 | WRITE(*,*) '>> names :', (names(ii), ii=1,nb_files) |
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326 | ENDIF |
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327 | !------------------------ |
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328 | END SUBROUTINE nct_getarg |
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