Array indices must be positive integers or logical values.

1 回表示 (過去 30 日間)
matlabgod
matlabgod 2018 年 9 月 27 日
コメント済み: Star Strider 2018 年 9 月 27 日
I'm trying to create a loop that plots the function for each t value on the same graph, I am getting an "Array indices must be positive integers or logical values." error.
t = [1 24 48 72];
x = linspace(0,1,4);
for ii = length(t)
u=1.656e-5;
c(x)=(0.5).*erfc(x./(2.*sqrt(u.*t)));
plot (x, c)
end

回答 (1 件)

Star Strider
Star Strider 2018 年 9 月 27 日
This will run:
t = [1 24 48 72];
x = linspace(0,1,4);
for ii = length(t)
u=1.656e-5;
c(ii)=(0.5).*erfc(x(ii)./(2.*sqrt(u.*t(ii))));
plot (x, c)
end
although you may want to experiment with it.
Note that I subscripted ‘x’ and ‘t’, since I assume that is what you intend.
  2 件のコメント
matlabgod
matlabgod 2018 年 9 月 27 日
Hi thanks for the quick response, but now I'm getting "Error using plot Vectors must be the same length." error.
Star Strider
Star Strider 2018 年 9 月 27 日
My pleasure.
You must be using different size vectors for ‘t’ and ‘x’.
My code works with the code you posted.

サインインしてコメントする。

カテゴリ

Help Center および File ExchangeMATLAB についてさらに検索

製品


リリース

R2018a

Community Treasure Hunt

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

Start Hunting!

Translated by