how to delete elements in the matlab array by overcoming the Unable error to delete elements from this array because dimension 3 has fixed size.

hello, I have a 3D matrix array of 1x1x10001 and I want to delete the first array so I use the codingan below but I get an error like this

Unable error to delete elements from this array because dimension 3 has fixed size.

if anyone can help me how to solve this error and I can delete the first array, thank you very much I really hope the help of good people.

function y = fcn (u)
u(:,:,1) = [];
end

[Ruger28]

check out squeeze

doc squeeze

[Naufal Arfani]

from what I noticed in squeeze mathworks, I think it's just to change the 3D matrix to 2D Matrix or Vector then how do I use it and be able to remove the first array as I want, is it possible you can give an example code please from my problem @Ruger28

Answer 1

[Bjorn Gustavsson]

In your function y will not be set. You only try to remove one element from the input, that's wasting time. When I run this at the command-line prompt:

q = randn(1,1,12);
q(:,:,1) = [];

everything works fine.

HTH

[Naufal Arfani]

thanks for entering so do I have to use the code like below? because I'm using a 3D matrix of 1x1x10001 @Bjorn Gustavsson or how do I set y so as not to waste time

function y = fcn (u)
u = randn(1,1,10001);
u(:,:,1) = [];
end

[Bjorn Gustavsson]

In the function you will have to assign something to the output variable y. Otherwise matlab will not know what to put into y, should it be exp(1) that's calculated? only the first component of u?, the sum of all components of u? Otherwise your function will return an error or a warning that y is not assigned in fcn (forgotten the exact message). This you do something like this:

function y = fcn(u)
u = randn(1,1,1001);
u(:,:,1) = [];
y = u;
end