1 | %%%%%%%%%%%%%%% FICHIER pluie IRD
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2 | % ouverture / lecture du fichier
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3 | clear;
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4 | cd('Pluie_ird_25');
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5 |
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6 | % on selectionne les mois d ete (attention aux annees bixestiles!)
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7 |
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8 | siz1=31+28+31+30+31+1;
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9 | siz1bis=31+28+31+30+31+30+31+31+30;
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10 | pluie=zeros(41,17,122,12);
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11 |
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12 | clear v fid; fid=fopen('pluvio.79.haut','r','b'); siz=41*17*365;
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13 | v=fread(fid,siz,'float'); fclose(fid);
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14 | v=reshape(v,41,17,365);
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15 | clear a b c;
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16 | for a=1:41;
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17 | for b=1:17;
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18 | for c=1:365;
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19 | if v(a,b,c)>990;
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20 | v(a,b,c)=NaN;
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21 | elseif v(a,b,c)<0;
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22 | v(a,b,c)=NaN;
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23 | end;
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24 | end;
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25 | end;
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26 | end;
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27 | pluie(:,:,:,1)=v(:,:,siz1:siz1bis); % 1979
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28 |
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29 | clear v fid; fid=fopen('pluvio.80.haut','r','b'); siz=41*17*366;
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30 | v=fread(fid,siz,'float'); fclose(fid);
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31 | v=reshape(v,41,17,366);
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32 | clear a b c;
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33 | for a=1:41;
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34 | for b=1:17;
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35 | for c=1:366;
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36 | if v(a,b,c)>990;
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37 | v(a,b,c)=NaN;
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38 | elseif v(a,b,c)<0;
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39 | v(a,b,c)=NaN;
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40 | end;
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41 | end;
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42 | end;
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43 | end;
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44 | pluie(:,:,:,2)=v(:,:,siz1+1:siz1bis+1); % 1980
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45 |
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46 | clear v fid; fid=fopen('pluvio.81.haut','r','b'); siz=41*17*365;
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47 | v=fread(fid,siz,'float'); fclose(fid);
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48 | v=reshape(v,41,17,365);
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49 | clear a b c;
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50 | for a=1:41;
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51 | for b=1:17;
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52 | for c=1:365;
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53 | if v(a,b,c)>990;
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54 | v(a,b,c)=NaN;
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55 | elseif v(a,b,c)<0;
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56 | v(a,b,c)=NaN;
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57 | end;
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58 | end;
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59 | end;
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60 | end;
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61 | pluie(:,:,:,3)=v(:,:,siz1:siz1bis); % 1981
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62 |
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63 | clear v fid; fid=fopen('pluvio.82.haut','r','b'); siz=41*17*365;
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64 | v=fread(fid,siz,'float'); fclose(fid);
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65 | v=reshape(v,41,17,365);
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66 | clear a b c;
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67 | for a=1:41;
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68 | for b=1:17;
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69 | for c=1:365;
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70 | if v(a,b,c)>990;
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71 | v(a,b,c)=NaN;
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72 | elseif v(a,b,c)<0;
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73 | v(a,b,c)=NaN;
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74 | end;
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75 | end;
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76 | end;
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77 | end;
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78 | pluie(:,:,:,4)=v(:,:,siz1:siz1bis); % 1982
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79 |
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80 | clear v fid; fid=fopen('pluvio.83.haut','r','b'); siz=41*17*365;
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81 | v=fread(fid,siz,'float'); fclose(fid);
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82 | v=reshape(v,41,17,365);
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83 | clear a b c;
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84 | for a=1:41;
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85 | for b=1:17;
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86 | for c=1:365;
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87 | if v(a,b,c)>990;
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88 | v(a,b,c)=NaN;
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89 | elseif v(a,b,c)<0;
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90 | v(a,b,c)=NaN;
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91 | end;
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92 | end;
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93 | end;
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94 | end;
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95 |
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96 |
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97 | pluie(:,:,:,5)=v(:,:,siz1:siz1bis); % 1983
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98 |
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99 | clear v fid; fid=fopen('pluvio.84.haut','r','b'); siz=41*17*366;
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100 | v=fread(fid,siz,'float'); fclose(fid);
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101 | v=reshape(v,41,17,366);
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102 | clear a b c;
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103 | for a=1:41;
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104 | for b=1:17;
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105 | for c=1:366;
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106 | if v(a,b,c)>990;
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107 | v(a,b,c)=NaN;
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108 | elseif v(a,b,c)<0;
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109 | v(a,b,c)=NaN;
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110 | end;
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111 | end;
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112 | end;
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113 | end;
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114 | pluie(:,:,:,6)=v(:,:,siz1+1:siz1bis+1); % 1984
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115 |
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116 | clear v fid; fid=fopen('pluvio.85.haut','r','b'); siz=41*17*365;
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117 | v=fread(fid,siz,'float'); fclose(fid);
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118 | v=reshape(v,41,17,365);
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119 | clear a b c;
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120 | for a=1:41;
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121 | for b=1:17;
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122 | for c=1:365;
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123 | if v(a,b,c)>990;
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124 | v(a,b,c)=NaN;
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125 | elseif v(a,b,c)<0;
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126 | v(a,b,c)=NaN;
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127 | end;
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128 | end;
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129 | end;
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130 | end;
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131 | pluie(:,:,:,7)=v(:,:,siz1:siz1bis); % 1985
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132 |
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133 | clear v fid; fid=fopen('pluvio.86.haut','r','b'); siz=41*17*365;
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134 | v=fread(fid,siz,'float'); fclose(fid);
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135 | v=reshape(v,41,17,365);
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136 | clear a b c;
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137 | for a=1:41;
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138 | for b=1:17;
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139 | for c=1:365;
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140 | if v(a,b,c)>990;
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141 | v(a,b,c)=NaN;
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142 | elseif v(a,b,c)<0;
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143 | v(a,b,c)=NaN;
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144 | end;
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145 | end;
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146 | end;
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147 | end;
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148 | pluie(:,:,:,8)=v(:,:,siz1:siz1bis); % 1986
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149 |
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150 | clear v fid; fid=fopen('pluvio.87.haut','r','b'); siz=41*17*365;
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151 | v=fread(fid,siz,'float'); fclose(fid);
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152 | v=reshape(v,41,17,365);
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153 | clear a b c;
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154 | for a=1:41;
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155 | for b=1:17;
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156 | for c=1:365;
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157 | if v(a,b,c)>990;
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158 | v(a,b,c)=NaN;
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159 | elseif v(a,b,c)<0;
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160 | v(a,b,c)=NaN;
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161 | end;
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162 | end;
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163 | end;
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164 | end;
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165 | pluie(:,:,:,9)=v(:,:,siz1:siz1bis); % 1987
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166 |
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167 | clear v fid; fid=fopen('pluvio.88.haut','r','b'); siz=41*17*366;
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168 | v=fread(fid,siz,'float'); fclose(fid);
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169 | v=reshape(v,41,17,366);
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170 | clear a b c;
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171 | for a=1:41;
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172 | for b=1:17;
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173 | for c=1:366;
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174 | if v(a,b,c)>990;
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175 | v(a,b,c)=NaN;
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176 | elseif v(a,b,c)<0;
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177 | v(a,b,c)=NaN;
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178 | end;
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179 | end;
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180 | end;
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181 | end;
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182 | pluie(:,:,:,10)=v(:,:,siz1:siz1bis); % 1988
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183 |
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184 | clear v fid; fid=fopen('pluvio.89.haut','r','b'); siz=41*17*365;
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185 | v=fread(fid,siz,'float'); fclose(fid);
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186 | v=reshape(v,41,17,365);
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187 | clear a b c;
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188 | for a=1:41;
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189 | for b=1:17;
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190 | for c=1:365;
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191 | if v(a,b,c)>990;
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192 | v(a,b,c)=NaN;
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193 | elseif v(a,b,c)<0;
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194 | v(a,b,c)=NaN;
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195 | end;
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196 | end;
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197 | end;
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198 | end;
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199 | pluie(:,:,:,11)=v(:,:,siz1:siz1bis); % 1989
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200 |
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201 | clear v fid; fid=fopen('pluvio.90.haut','r','b'); siz=41*17*365;
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202 | v=fread(fid,siz,'float'); fclose(fid);
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203 | v=reshape(v,41,17,365);
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204 | clear a b c;
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205 | for a=1:41;
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206 | for b=1:17;
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207 | for c=1:365;
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208 | if v(a,b,c)>990;
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209 | v(a,b,c)=NaN;
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210 | elseif v(a,b,c)<0;
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211 | v(a,b,c)=NaN;
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212 | end;
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213 | end;
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214 | end;
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215 | end;
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216 | pluie(:,:,:,12)=v(:,:,siz1:siz1bis); % 1990
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217 |
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218 | clear siz sizbis;
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219 | clear v;
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220 | cd('..');
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221 | save pluie.mat pluie;
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222 | clear
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223 |
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224 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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225 | load pluie.mat;
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226 | % pluie dimension : lon lat jours annee (41 17 122 12) => jour annee lat lon (17 41 122 12)
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227 |
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228 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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229 | load eof12_rossby_30100.txt;
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230 |
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231 | % on met sous la forme annee mois
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232 | eof12_rossby_30100=reshape(eof12_rossby_30100,122,28);
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233 | olr_eof=eof12_rossby_30100(:,1:12); % selection des annees avant 1990
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234 | clear eof12_rossby_30100;
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235 |
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236 | % on calcule l ecart type sur la serie temporelle de l'olr
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237 | k=122*12;
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238 | olrbis=reshape(olr_eof,k,1);
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239 | olrbis=std(olrbis);
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240 |
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241 | % intialisation des tableaux
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242 | pluie_filtre_compomax=NaN*ones(30,17,41);
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243 | pluie_filtre_compomin=NaN*ones(30,17,41);
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244 | pluie=permute(pluie,[3 4 2 1]);
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245 | compteurmax=0;
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246 | compteurmin=0;
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247 |
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248 | for a=1:12; % boucle sur les annees
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249 | clear delta;
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250 | delta=zeros(122,1);
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251 | for b=1:122; % boucle sur les jours : on prepare avant
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252 | if b>1;
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253 | delta(b)=olr_eof(b,a)-olr_eof(b-1,a);
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254 | end;
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255 | end;
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256 | for b=1:122; % boucle sur les jours
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257 | if (b>20 & b<112); % 1ere condition (laisser une marge de 10)
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258 | % cas 1 : max deltas apres negetifs et deltas avant postifs
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259 | if (delta(b+1)<0 & delta(b)<0 & delta(b-1)>0 & delta(b-2)>0 & olr_eof(b,a)>olrbis);
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260 | compteurmax=compteurmax+1;
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261 | pluie_filtre_compomax(compteurmax,:,:)=pluie(b,a,:,:);
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262 | % cas 2 : min deltas apres positifs et deltas avant negatifs
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263 | elseif (delta(b+1)>0 & delta(b)>0 & delta(b-1)<0 & delta(b-2)<0 & olr_eof(b,a)<(-olrbis));
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264 | compteurmin=compteurmin+1;
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265 | pluie_filtre_compomin(compteurmin,:,:)=pluie(b,a,:,:);
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266 | end;
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267 | end;
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268 | end;
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269 | end;
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270 |
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271 |
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272 | % on fait la somme des valeurs de pluie_filtreentiel sur le nbre d occurences
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273 | % on obtent un tableau de la forme (jours-avant-apres,lon,lat)
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274 | pluie_filtre_compomin1(:,:)=nanmean(pluie_filtre_compomin); clear pluie_filtre_compomin;
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275 | pluie_filtre_compomax1(:,:)=nanmean(pluie_filtre_compomax); clear pluie_filtre_compomax;
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276 |
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277 | clear pluie_min pluie_max;
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278 |
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279 | pluie_min=pluie_filtre_compomin1;
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280 | pluie_max=pluie_filtre_compomax1;
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281 |
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282 | diff=pluie_min-pluie_max;
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283 |
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284 | sauvegrads('composite_pluie_ird_30100',diff,[-70 2.5 -10 2.5]);
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285 |
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286 | for b=1:17;
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287 | for c=1:41;
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288 | if diff(b,c)<-5;
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289 | diff(b,c)=5;
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290 | elseif diff(b,c)>5;
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291 | diff(b,c)=5;
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292 | end;
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293 | end;
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294 | end
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295 | diff(1,1)=-5.01;
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296 | diff(1,2)=5.01;
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297 |
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298 | palette
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299 | lat=[-10:2.5:30]; lon=[-70:2.5:30]';
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300 |
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301 | contourf(lon,lat,diff,[-5:0.5:5],'LineStyle','none');
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302 | caxis([-5 5])
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303 | co=colorbar('horiz');
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304 | set(co,'position',[0.15 0.26 0.3 0.02]);
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305 | set(co,'xtick',[-4:2:4],'xticklabel',[-4:2:4],'fontname','Arial','fontsize',4);
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306 |
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307 | hold on;
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308 |
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309 |
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