clc; 全部关闭; clear %多维联合温软香菇概率分布%%二维联合概率分布%方法1 :调整mu=zeros (1,2 ); %平均sigma=[ 1,0.9; 0.9,1; %协方差RNG(default ) (forreproducibilityx=mvnrnd ) mu,sigma,1000 ); y=mvnpdf(x,mu,sigma ); figure scatter3(x 65:1 )、x 65:2 )、y,'.') xlabel ) (x1 ) ) ylabel ) zlabel ) probabilitydenned sigma 2 sigma3=(*(X-mu2 ) ) * ) x-mu2 )/length(X ) x; %协方差e[(X-mu ) ) (X-mu ) ]y2=sqrt(1/) )2*pi ) ^length ) mu2 ) *det ) sigma2) ) exp(-1/2 ) ) x ) forI=1:1000y3(I )=y2 ) I,I ); %这里是重点! endfigurescatter3(x 65:1 )、x 65:2 )、y3,'.') (xlabel ) ) x1 ) ) ylabel ) (x2 ) (zlabel ) )属性
MATLAB没有代码段格式吗?