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# [已解决] 三维等值线图上标记最值

biyuxiao 发表于 2014-4-28 10:51:56
 我的三维等值线图的代码如下： function III clc clear close all A=[25 63.5 1798.535817 25 62.5 1798.322753 25 61.5 1798.074917 24 63.5 1797.820427 25 60.5 1797.801854 24 62.5 1797.548923 25 59.5 1797.510799 24 61.5 1797.231615 25 58.5 1797.128392 23 63.5 1797.045714 24 60.5 1797.004311 25 57.5 1796.838966 23 62.5 1796.718296 24 59.5 1796.639668 23 61.5 1796.441159 25 56.5 1796.375959 24 58.5 1796.372083 22 63.5 1796.219292 23 60.5 1796.154648 25 55.5 1795.94328 24 57.5 1795.922466 22 62.5 1795.910078 23 59.5 1795.900231 22 61.5 1795.590614 24 56.5 1795.505349 25 54.5 1795.475534 23 58.5 1795.466339 21 63.5 1795.418786 22 60.5 1795.383496 21 62.5 1795.087903 23 57.5 1795.067292 24 55.5 1795.05227 25 53.5 1795.048677 22 59.5 1795.005401 21 61.5 1794.880568 23 56.5 1794.629395 22 58.5 1794.621 25 52.5 1794.600346 ]; x=A(:,1); y=A(:,2); z=A(:,3); xmin=min(x); xmax=max(x); ymin=min(y); ymax=max(y); [xx,yy]=meshgrid(linspace(xmin,xmax,30),linspace(ymin,ymax,30)); zz=griddata(x,y,z,xx,yy,'v4'); [c,h]=contour(xx,yy,zz); clabel(c,h) x=A(:,1); y=A(:,2); z=A(:,3); xmin=min(x); xmax=max(x); ymin=min(y); ymax=max(y); [xx,yy]=meshgrid(linspace(xmin,xmax,30),linspace(ymin,ymax,30)); zz=griddata(x,y,z,xx,yy,'v4'); surf(xx,yy,zz); % shading interp hold on [c h]=contour3(xx,yy,zz); clabel(c,h); colormap('gray'); 绘制的图像如下： 如何在上面图中标记出最大值？

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bertcool 发表于 2014-4-29 03:15:08
 like this? [val,idx]=max(zz(:)); hold on scatter3(xx(idx),yy(idx),zz(idx),'go') 复制代码

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bertcool 发表于 2014-4-29 03:15:08
 like this? [val,idx]=max(zz(:)); hold on scatter3(xx(idx),yy(idx),zz(idx),'go') 复制代码

biyuxiao 发表于 2014-5-5 19:39:45
 是这样的，非常感谢！
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