??? Subscript indices must either be real positive integers or logicals.

2012 10 10
1 个回答
回答已采纳
2 次查看（30 天）

0 个投票

Help. I am very new to MATLAB and I am having problems creating a for loop within a for loop in order to draw a ruled surface.
Here is the script that makes the message appear above:
for u=0:.05:1
for v=0:.005:1
P=[1,1];
P1=[5,1];
P2=[2,4];
P3=[6,3];
puvx=P+u*(P1-P);
puvy=P2+u(P3-P2);
plot(puvx,puvy);
grid on;
axis square;
hold on;
end
end
What does this mean and how can I fix this? I am so lost. Thank you, Rachel

请先登录，再回答此问题。

 采纳的回答

Razvan
Razvan 2012-10-10

1 个投票

You forgot an "*"
puvy = P2 + u * (P3 - P2);

2 个评论
显示 无 隐藏 无

Rachel
Rachel 2012-10-10
It still didn't help me out completely. I actually needed to reformat my answer to include the bezier equation as well as the ruled surface equation for both G(u) and Q(u). I did this, and it worked.
Razvan
Razvan 2012-10-10
Well, I answered only what you asked... ``What does this mean and how can I fix this?''

请先登录，再进行评论。

更多回答（0 个）

类别

在 帮助中心 和 File Exchange 中查找有关 Symbolic Math Toolbox 的更多信息

标签

Community Treasure Hunt

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

Start Hunting!

Translated by