[17] | 1 | % |
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| 2 | |
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| 3 | %%%%%%%%%%%%%%% FICHIER pluie IRD |
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| 4 | % ouverture / lecture du fichier |
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| 5 | clear; |
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| 6 | |
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| 7 | % on selectionne les mois d ete (attention aux annees bixestiles!) |
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| 8 | |
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| 9 | siz1=31+28+31+30+31+1; |
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| 10 | siz1bis=31+28+31+30+31+30+31+31+30; |
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| 11 | pluie=zeros(41,17,122,12); |
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| 12 | |
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| 13 | clear v fid; fid=fopen('pluvio.79.haut','r','b'); siz=41*17*365; |
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| 14 | v=fread(fid,siz,'float'); fclose(fid); |
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| 15 | v=reshape(v,41,17,365); |
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| 16 | clear a b c; |
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| 17 | for a=1:41; |
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| 18 | for b=1:17; |
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| 19 | for c=1:365; |
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| 20 | if v(a,b,c)>990; |
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| 21 | v(a,b,c)=NaN; |
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| 22 | elseif v(a,b,c)<0; |
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| 23 | v(a,b,c)=NaN; |
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| 24 | end; |
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| 25 | end; |
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| 26 | end; |
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| 27 | end; |
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| 28 | pluie(:,:,:,1)=v(:,:,siz1:siz1bis); % 1979 |
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| 29 | |
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| 30 | clear v fid; fid=fopen('pluvio.80.haut','r','b'); siz=41*17*366; |
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| 31 | v=fread(fid,siz,'float'); fclose(fid); |
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| 32 | v=reshape(v,41,17,366); |
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| 33 | clear a b c; |
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| 34 | for a=1:41; |
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| 35 | for b=1:17; |
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| 36 | for c=1:366; |
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| 37 | if v(a,b,c)>990; |
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| 38 | v(a,b,c)=NaN; |
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| 39 | elseif v(a,b,c)<0; |
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| 40 | v(a,b,c)=NaN; |
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| 41 | end; |
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| 42 | end; |
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| 43 | end; |
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| 44 | end; |
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| 45 | pluie(:,:,:,2)=v(:,:,siz1+1:siz1bis+1); % 1980 |
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| 46 | |
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| 47 | clear v fid; fid=fopen('pluvio.81.haut','r','b'); siz=41*17*365; |
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| 48 | v=fread(fid,siz,'float'); fclose(fid); |
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| 49 | v=reshape(v,41,17,365); |
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| 50 | clear a b c; |
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| 51 | for a=1:41; |
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| 52 | for b=1:17; |
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| 53 | for c=1:365; |
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| 54 | if v(a,b,c)>990; |
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| 55 | v(a,b,c)=NaN; |
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| 56 | elseif v(a,b,c)<0; |
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| 57 | v(a,b,c)=NaN; |
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| 58 | end; |
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| 59 | end; |
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| 60 | end; |
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| 61 | end; |
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| 62 | pluie(:,:,:,3)=v(:,:,siz1:siz1bis); % 1981 |
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| 63 | |
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| 64 | clear v fid; fid=fopen('pluvio.82.haut','r','b'); siz=41*17*365; |
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| 65 | v=fread(fid,siz,'float'); fclose(fid); |
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| 66 | v=reshape(v,41,17,365); |
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| 67 | clear a b c; |
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| 68 | for a=1:41; |
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| 69 | for b=1:17; |
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| 70 | for c=1:365; |
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| 71 | if v(a,b,c)>990; |
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| 72 | v(a,b,c)=NaN; |
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| 73 | elseif v(a,b,c)<0; |
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| 74 | v(a,b,c)=NaN; |
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| 75 | end; |
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| 76 | end; |
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| 77 | end; |
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| 78 | end; |
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| 79 | pluie(:,:,:,4)=v(:,:,siz1:siz1bis); % 1982 |
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| 80 | |
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| 81 | clear v fid; fid=fopen('pluvio.83.haut','r','b'); siz=41*17*365; |
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| 82 | v=fread(fid,siz,'float'); fclose(fid); |
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| 83 | v=reshape(v,41,17,365); |
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| 84 | clear a b c; |
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| 85 | for a=1:41; |
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| 86 | for b=1:17; |
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| 87 | for c=1:365; |
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| 88 | if v(a,b,c)>990; |
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| 89 | v(a,b,c)=NaN; |
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| 90 | elseif v(a,b,c)<0; |
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| 91 | v(a,b,c)=NaN; |
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| 92 | end; |
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| 93 | end; |
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| 94 | end; |
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| 95 | end; |
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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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[22] | 220 | |
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[23] | 221 | status=load('eof12_rossby_30100.txt'); |
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[24] | 222 | eof12_rossby_30100=status; |
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| 223 | clear status; |
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[17] | 224 | |
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| 225 | % on met sous la forme annee mois |
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| 226 | eof12_rossby_30100=reshape(eof12_rossby_30100,122,28); |
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| 227 | % selection des annees avant 1990 |
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| 228 | olr_eof=eof12_rossby_30100(:,1:12); |
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| 229 | clear eof12_rossby_30100; |
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| 230 | |
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| 231 | % on calcule l ecart type sur la serie temporelle de l'olr |
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| 232 | k=122*12; |
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| 233 | olrbis=reshape(olr_eof,k,1); |
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| 234 | olrbis=std(olrbis); |
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| 235 | |
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| 236 | % intialisation des tableaux |
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| 237 | pluie_filtre_compomax=NaN*ones(30,17,41); |
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| 238 | pluie_filtre_compomin=NaN*ones(30,17,41); |
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| 239 | pluie=permute(pluie,[3 4 2 1]); |
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| 240 | compteurmax=0; |
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| 241 | compteurmin=0; |
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| 242 | |
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| 243 | % boucle sur les annees |
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| 244 | for a=1:12; |
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| 245 | clear delta; |
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| 246 | delta=zeros(122,1); |
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| 247 | % boucle sur les jours : on prepare avant |
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| 248 | for b=1:122; |
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| 249 | if b>1; |
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| 250 | delta(b)=olr_eof(b,a)-olr_eof(b-1,a); |
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| 251 | end; |
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| 252 | end; |
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| 253 | % boucle sur les jours |
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| 254 | for b=1:122; |
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| 255 | % 1ere condition (laisser une marge de 10) |
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| 256 | if (b>20 && b<112); |
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| 257 | % cas 1 : max deltas apres negetifs et deltas avant postifs |
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| 258 | 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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| 259 | compteurmax=compteurmax+1; |
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| 260 | pluie_filtre_compomax(compteurmax,:,:)=pluie(b,a,:,:); |
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| 261 | % cas 2 : min deltas apres positifs et deltas avant negatifs |
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| 262 | 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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| 263 | compteurmin=compteurmin+1; |
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| 264 | pluie_filtre_compomin(compteurmin,:,:)=pluie(b,a,:,:); |
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| 265 | end; |
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| 266 | end; |
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| 267 | end; |
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| 268 | end; |
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| 269 | |
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| 270 | % on fait la somme des valeurs de pluie_filtreentiel sur le nbre d occurences |
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| 271 | % on obtent un tableau de la forme (jours-avant-apres,lon,lat) |
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| 272 | pluie_filtre_compomin1(:,:)=nanmean(pluie_filtre_compomin); |
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| 273 | clear pluie_filtre_compomin; |
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| 274 | pluie_filtre_compomax1(:,:)=nanmean(pluie_filtre_compomax); |
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| 275 | 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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[26] | 294 | end; |
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[17] | 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]; |
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| 300 | 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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