Variable change at every time step

1 次查看（过去 30 天）
RAKESH KUMAR TOTA
RAKESH KUMAR TOTA 2022-1-11
评论： RAKESH KUMAR TOTA 2022-1-11
for i = 1 :1000
a(:,i) = b ;% assume b size 800 X 1 vector
% but b size changes at random iteration (for loop) depends on the problem i mean it size
% decrease so how to store b values in a as it showing error
end
Error:
Unable to perform assignment because the size of the left side is 1-by-800 and
the size of the right side is 797-by-1.
Other case :
for i = 1 :1000
a(:,i) = b'; % assume b size 800 X 1 vector
% but b size changes at random iteration (for loop) depends on the problem i mean it size
% decrease so how to store b values in a as it showing error
end
Unable to perform assignment because the indices on the left side are not
compatible with the size of the right side.
I can understand what error showing but how to tackle this problem. Any help appreciated .
Thanks in advance.
  4 个评论
显示 2更早的评论
VBBV
VBBV 2022-1-11
Can you paste the actual error that you faced. Everything in red color text shown at command window
RAKESH KUMAR TOTA
RAKESH KUMAR TOTA 2022-1-11
Unable to perform assignment because the size of the left side is 1-by-800 and the size of the right side is 797-by-1. for first case type
Unable to perform assignment because the indices on the left side are not
compatible with the size of the right side. for second case type

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

KSSV
KSSV 2022-1-11
When you are not sure of size b, you can save them into a cell array.
a = cell(1000,1) ;
for i = 1 :1000
a{i} = b ;
end
You can access any cell using a{1}, a{2},....a{i},...a{1000}.
  5 个评论
显示 3更早的评论
KSSV
KSSV 2022-1-11
Initializing with dimensions is suggested.

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Logical 的更多信息

标签

产品


版本

R2021b

Community Treasure Hunt

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

Start Hunting!

Translated by