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📄 matlab画三维图的两种方法.htm

📁 详述了Matlab中画图的命令及技巧
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这几天看到Ras函数(Rastrigin&#39;s Function),这个函数对模拟退火、进化计算等算法具有很强的欺骗性,因为它有非常多的局部最小值点和局部最大值点,很容易使算法陷入局部最优,而不能得到全局最优解。</P><P>&nbsp;&nbsp;&nbsp; Ras函数为:<BR><IMG border="0" small="0" class="blogimg" src="./Matlab画三维图的两种方法_files/147b9b25b5c8f96035a80f1b.jpg"><BR><BR>&nbsp;&nbsp; Matlab的Help里面有这个函数的三维图像,但是没有解释是怎样画出来的。经过请教同学,得出两种方法,现记录在此。</P><P>第一:<BR>[x,y]=meshgrid([0:0.1:4]);<BR>z=20+x.*x+y.*y-10*(cos(2*pi*x)+cos(2*pi*y)); <BR>surfc(x,y,z)<BR>shading interp</P><P>第二:<BR>f=@(x,y) 20+x.*x+y.*y-10*(cos(2*pi*x)+cos(2*pi*y));<BR>&nbsp;ezsurf(f,[-2 2])<BR>shading interp </P><P>&nbsp;</P></DIV></TD></TR></TBODY></TABLE><BR><DIV class="opt"><A href="http://hi.baidu.com/mynana/blog/category/%BF%C6%D1%D0%D6%AE%C2%B7" title="查看该分类中所有文章">类别:科研之路</A> 		| <A title="将此文章添加到百度搜藏" href="http://cang.baidu.com/do/add" onclick="return addToFavor();" target="_blank">添加到搜藏</A>		| 浏览(<SPAN id="result">4296</SPAN>)

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