How do I create a matrix with specific values?
显示 更早的评论
Hi, I have a matrix (6x21) whose values are those found experimentally. Let's call it: expbasket
I want to calculate the error between the obtained matrix and a matrix having real values.
The real values are in row order: -9; -6; -3; 3; 6; 9 and every columns it's the same.
So I have to have a matrix like this:
realvalue= 6x21
-9 -9 -9 ...
-6 -6 -6 ...
-3 -3 3 ...
3 3 3 ...
6 6 6 ...
9 9 9 ...
By calculating the error, I mean the following operation between matrices:
errorbasket= realvalue - expbasket;
This should be another matrix 6x21;
Next I want to average the values of each column. In order to obtain a vector of 21 elements. Where each element of this vector is the average of the elements of each column of the matrix errorbasket
1 个评论
the cyclist
2021-10-1
FYI, there is a very good tutorial that you might find useful for learning basic operations like these: MATLAB Onramp.
采纳的回答
Something like this:
expbasket = randi([-9 9],6,21); % placeholder data
rvalue = [-9; -6; -3; 3; 6; 9]; % don't need the whole matrix
errbasket = mean(rvalue - expbasket,1)
If you really truly want the reference array to be expanded to 6x21, you can do this instead:
rvalue = repmat([-9; -6; -3; 3; 6; 9],[1 21]);
更多回答（0 个）
类别
在 帮助中心 和 File Exchange 中查找有关 Logical 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
