資源簡介
日標準化降水指數SPI,輸入為降水序列
代碼片段和文件信息
function?SPI?=?CalculateSPI(?Data?)
%SPI?Summary?of?this?function?goes?here
%???Detailed?explanation?goes?here
%?????c0=2.515517;
%?????c1=0.802853;
%?????c2=0.010328;
%?????d1=1.432788;
%?????d2=0.189269;
%?????d3=0.001308;
????sz?=?size(Data1);
????
????ZerosCount?=?sum(Data==01);
????avgP?=?sum(Data1)./(sz-ZerosCount);
????X_n?=?Data;
????X_n(X_n?==?0)?=?1;
%?????Product?=?prod(X_n?2);
%??
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