Avoiding (X,Y)=(0,0) from loop

I want to avoid (0,0) value for (X,Y). How can I achive it?
M=64;
r = linspace(0,1,M);
theta = linspace(0,2*pi,M);
[R, THETA] = meshgrid(r,theta);
X = R.*cos(THETA);
Y = R.*sin(THETA);

3 个评论

You want to avoid in the sense, you want to replace it with some other number or NaN?
I just want to skip this pair. No replacement is deisired.
The following will work:
if(x~=0) && (y~=0)
Z=y/x;
else
end

请先登录,再进行评论。

回答(2 个)

M=64;
r = linspace(10^-3,1,M);
theta = linspace(0,2*pi,M);
[R, THETA] = meshgrid(r,theta);
X = R.*cos(THETA);
Y = R.*sin(THETA);
idx = X==0 & Y == 0 ;
As per my understanding you want to avoid the value (0,0) for (X,Y) in your code
I will be demonstrating it using your code. I have just made a change to your code for the value X and Y
M=64;
r = linspace(0,1, M);
theta = linspace(0,2*pi, M);
[R, THETA] = meshgrid(r,theta);
X = R(:,2: end).*cos(THETA(:,2:end));
Y = R(:,2:end).*sin(THETA(:,2:end));
Z =Y./X;

类别

帮助中心File Exchange 中查找有关 Creating and Concatenating Matrices 的更多信息

产品

版本

R2022a

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by