matlab 中，用循环控制命令编写程序

\u7528matlab\u5faa\u73af\u547d\u4ee4\u7f16\u5199\u7a0b\u5e8f\u521b\u5efa\u77e9\u9635a

\u5176\u5b9e\u8fd9\u79cd\u77e9\u9635\u6839\u672c\u4e0d\u9700\u8981\u5faa\u73af\uff0c\u4e24\u53e5\u8bdd\u5c31\u641e\u5b9a\u4e86\u3002\u5f53\u7136\u7528\u5faa\u73af\u6bd4\u8f83\u5bb9\u6613\u7406\u89e3\u3002
[x,y]=meshgrid(1:5,1:6);
a=1./(x'+y'-1)

>> whos
Name Size Bytes Class Attributes

a1 1x1 8 double
a2 1x1 8 double
a3 1x1 8 double
l1 1x1 8 double
l2 1x1 8 double
l3 1x1 8 double
x 1x1 8 double
y 1x1 8 double
z 1x1 8 double


\u770b\u5230\u6ca1\u6709\uff1fx\u3001y\u3001z\u90fd\u662f\u4e00\u4e2a\u5355\u6570\uff0c\u53ea\u80fd\u753b\u4e00\u4e2a\u70b9\u3002\u8fd9\u6837\u5c31\u53ef\u4ee5\u4e86\uff1a

clc;clear
a1=(-0.5:0.02:0.5)*pi;
a2=(-0.6:0.006:-0.3)*pi;
a3=(-0.23:0.007:0.12)*pi;
l1=250;l2=760;l3=420;
x=cos(a1).*(l3.*cos(a2+a3)+l2.*cos(a2)+l1);
y=sin(a1).*(l3.*cos(a2+a3)+l2.*cos(a2)+l1);
z=l3.*sin(a2+a3)+l2.*sin(a2);
plot3(x,y,z);grid on;

\u8fd0\u884c\u5b8c\u4e4b\u540e\uff1a
>> whos
Name Size Bytes Class Attributes

a1 1x51 408 double
a2 1x51 408 double
a3 1x51 408 double
l1 1x1 8 double
l2 1x1 8 double
l3 1x1 8 double
x 1x51 408 double
y 1x51 408 double
z 1x51 408 double

\u6570\u7ec4\u624d\u80fd\u753b\u56fe\u3002

可以使用两层for循环控制命令来创建矩阵A，具体实现如下：

matlab

% 初始化矩阵A为全零矩阵
A = zeros(5, 6);

% 使用for循环控制命令，遍历矩阵的每个元素，并计算其值
for i = 1:5
for j = 1:6
A(i, j) = 1 / (i + j - 1);
end
end

% 输出矩阵A的值
disp(A)
运行以上代码，就可以创建矩阵A并输出其值。

clear;clc
a=zeros(5,6);
for ii=1:5
for jj=1:6
a(ii,jj)=1/(ii+jj-1);
end
end
a

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