[10] | 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 eof24_1030.txt
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| 230 |
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| 231 |
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| 232 | % on met sous la forme annee mois
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| 233 | eof24_1030=reshape(eof24_1030,122,28);
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| 234 | olr_eof=eof24_1030(:,1:12); % selection des annees avant 1990
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| 235 | clear eof24_1030
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| 236 |
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| 237 | % on calcule l ecart type sur la serie temporelle de l'olr
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| 238 | k=122*12;
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| 239 | olrbis=reshape(olr_eof,k,1);
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| 240 | olrbis=std(olrbis);
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| 241 |
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| 242 | % intialisation des tableaux
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| 243 | pluie_filtre_compomax=NaN*ones(30,17,41);
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| 244 | pluie_filtre_compomin=NaN*ones(30,17,41);
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| 245 | pluie=permute(pluie,[3 4 2 1]);
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| 246 | compteurmax=0;
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| 247 | compteurmin=0;
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| 248 |
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| 249 | for a=1:12; % boucle sur les annees
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| 250 | clear delta;
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| 251 | delta=zeros(122,1);
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| 252 | for b=1:122; % boucle sur les jours : on prepare avant
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| 253 | if b>1;
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| 254 | delta(b)=olr_eof(b,a)-olr_eof(b-1,a);
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| 255 | end;
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| 256 | end;
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| 257 | for b=1:122; % boucle sur les jours
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[15] | 258 | if (b>20 && b<112); % 1ere condition (laisser une marge de 10)
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[10] | 259 | % cas 1 : max deltas apres negetifs et deltas avant postifs
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[15] | 260 | 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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[10] | 261 | compteurmax=compteurmax+1;
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| 262 | pluie_filtre_compomax(compteurmax,:,:)=pluie(b,a,:,:);
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| 263 | % cas 2 : min deltas apres positifs et deltas avant negatifs
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[15] | 264 | 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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[10] | 265 | compteurmin=compteurmin+1;
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| 266 | pluie_filtre_compomin(compteurmin,:,:)=pluie(b,a,:,:);
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| 267 | end;
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| 268 | end;
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| 269 | end;
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| 270 | end;
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| 271 |
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| 272 |
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| 273 | % on fait la somme des valeurs de pluie_filtreentiel sur le nbre d occurences
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| 274 | % on obtent un tableau de la forme (jours-avant-apres,lon,lat)
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| 275 | pluie_filtre_compomin1(:,:)=nanmean(pluie_filtre_compomin); clear pluie_filtre_compomin;
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| 276 | pluie_filtre_compomax1(:,:)=nanmean(pluie_filtre_compomax); clear pluie_filtre_compomax;
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| 277 |
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| 278 | clear pluie_min pluie_max;
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| 279 |
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| 280 | pluie_min=pluie_filtre_compomin1;
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| 281 | pluie_max=pluie_filtre_compomax1;
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| 282 |
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| 283 | diff=pluie_min-pluie_max;
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| 284 |
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| 285 | sauvegrads('composite_pluie_eof234',diff,[-70 2.5 -10 2.5]);
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| 286 |
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| 287 | for b=1:17;
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| 288 | for c=1:41;
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| 289 | if diff(b,c)<-5;
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| 290 | diff(b,c)=5;
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| 291 | elseif diff(b,c)>5;
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| 292 | diff(b,c)=5;
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| 293 | end;
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| 294 | end;
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| 295 | end
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| 296 | diff(1,1)=-5.01;
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| 297 | diff(1,2)=5.01;
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| 298 |
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| 299 | palette
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| 300 | lat=[-10:2.5:30]; lon=[-70:2.5:30]';
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| 301 |
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| 302 | contourf(lon,lat,diff,[-5:0.5:5],'LineStyle','none');
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| 303 | caxis([-5 5])
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| 304 | co=colorbar('horiz');
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| 305 | set(co,'position',[0.15 0.26 0.3 0.02]);
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| 306 | set(co,'xtick',[-4:2:4],'xticklabel',[-4:2:4],'fontname','Arial','fontsize',4);
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| 307 |
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| 308 | hold on;
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| 309 |
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| 310 |
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