How do I replace one value of a matrix with another value from a different matrix?

Question

Connor 2023-2-6

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1907025-how-do-i-replace-one-value-of-a-matrix-with-another-value-from-a-different-matrix

回答： Image Analyst 2023-2-6

How to you swap a variable in one matrix with another variable from a different matrix without typeing in (for example) E(1,2) = 3?

Is there a way to do it by specifying the matrix and the values position that you want to use to swap?

I have tried to say something like A(1,1)=B(2,2) but I keep getting this error:

Incorrect use of '=' operator. Assign a value to a variable using '=' and compare values for equality using '=='.

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Image Analyst 2023-2-6

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1907025-how-do-i-replace-one-value-of-a-matrix-with-another-value-from-a-different-matrix#answer_1164415

在 MATLAB Online 中打开

It will work but you're going to have to type something after the equals sign, like

A(1,1) = B(2,2)

otherwise how will it know the location in B and the location in A?

Show the entire actual error message, not just a snippet from it. Specifically the error message will show the line of code and you forgot to include that. Show us ALL THE RED TEXT.

It's possible you had an "if" before that. Or it's possible that B is not the same class as A. What does this show?

whos A
whos B
A(1,1) = B(2,2)

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

Answer 2

Arif Hoq 2023-2-6

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1907025-how-do-i-replace-one-value-of-a-matrix-with-another-value-from-a-different-matrix#answer_1164410

编辑：Arif Hoq 2023-2-6

在 MATLAB Online 中打开

I don't find any issue.please attach your data and code.

A=[3 6 8 9;1 2 5 6]
A = 2×4
     3     6     8     9
     1     2     5     6
B=[11 22 33 44;55 66 77 88];
A(1,1)=B(2,2)
A = 2×4
    66     6     8     9
     1     2     5     6