error using ==> times

what does it mean that error below. can anyone explain to me. i can not understand the error. thanks

 ??? Error using ==> times
 Integers can only be combined with
 integers of the same class, or
 scalar doubles.

Answer 1

[James Tursa]

You can do this:

m = int32(1:3);
n = m .* 2; % integer class times scalar double

You can't do this:

m = int32(1:3);
n = m .* [4:6]; % integer class times same size double

So if you need to do the latter, you can do it like this:

m = int32(1:3);
n = m .* int32([4:6]); % integer class times same size same class

Answer 2

[Junaid]

I think whatever vector you are trying to multiplying should have same class (data types). So first you type cast to one class.

like

 x = double(x);

[mohd]

after i put that code.. another error occur.

??? Error using ==> times

Matrix dimensions must agree.

[mohd]

what is that error and how to solve it

[Junaid]

If your matrix dimension doesn't satisfy the condition of multiplication then you can't multiply them. You have check the Dimenions.