peaks

介绍

peaks() 函数本质上是一个二元高斯分布的PDF；从图像上看，它有3个极小点，3个极大点；

z=peaks(50)mesh(z)

应用举例

代码

% PeaksLabel.mZ=peaks(30); % Z: 30*30 double matrix;% Look for the highest point;zmax=max(Z);Zmax=max(zmax);% Firstly find the maximum of 30 columns,return zmax~1x30% Secondly find the maximum of zmax, return 1x1[Ymax, Xmax]=find(Z==Zmax);% Y is first parameter using find()zmin=min(Z);Zmin=min(zmin);[Ymin,Xmin]=find(Z==Zmin);% plot func Z;mesh(Z);hold on;% label maximum and minimum pointplot3(Xmax,Ymax,Zmax,'k.','markersize',20);hold onplot3(Xmin,Ymin,Zmin,'k.','markersize',20);hold ontext(Xmax,Ymax,Zmax,['max_value=',num2str(Zmax)])text(Xmin,Ymin,Zmin, ['min_value=',num2str(Zmin)])

最终的效果图：

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