how to solve 'Error using | Matrix dimensions must agree. ' ?

Hello Dears

i have the error that i mentioned in question and i do not know how i can solve it.

while (Lia2_One_Three ~= zeros(length(Lia2_One_Three),1)  |  Lia2_Two_Three ~= zeros(length(Lia2_Two_Three),1))
   
   row_n2_three_step = randperm(length(area_2) / 2, n2_three_step_delayed_measurements) ;  
   Lia2_One_Three = ismember(row_n2_one_step, row_n2_three_step) ;
   Lia2_Two_Three = ismember(row_n2_two_step, row_n2_three_step) ;
   
end

it seems that this error says that 'Lia2_One_Three ~= zeros(length(Lia2_One_Three)) ' and

' Lia2_Two_Three ~= zeros(length(Lia2_Two_Three))' should have same dimention. i just want to say that while the first condition or second condition is true, produce ' row_n2_three_step' again.

'Lia2_One_Three ' and ' Lia2_Two_Three ' are vectors with different dimentions.

[KALYAN ACHARJYA]

OK, If the code is small, can you share the complete code, so that we can try on it?

[neda eskandari]

sure

[neda eskandari]

please see 108 to 112 rows

[neda eskandari]

Thank you Dear

Answer 1

[James Tursa]

Maybe this line:

while (Lia2_One_Three ~= zeros(length(Lia2_One_Three),1)  |  Lia2_Two_Three ~= zeros(length(Lia2_Two_Three),1))

could be this instead?

while ( any(Lia2_One_Three(:)) || any(Lia2_Two_Three(:)) )

I'm guessing a bit on what I think you want the test to do.

Note that the ~= and | operators are element-wise operators, which I am guessing is not what you really want to use here.

[neda eskandari]

exactly you are right.

but can you please explain the code you have written a little more?

i want to say that when ' Lia2_One_Three' or 'Lia2_Two_Three' is not zero, stay in while loop and produce 'row_n2_three_step' untill both 'Lia2_One_Three' and 'Lia2_Two_Three' get zero.

[neda eskandari]

'Lia2_One_Three' and 'Lia2_Two_Three' are vectors with different dimentions

[neda eskandari]

should not we write :

while ( any(Lia2_One_Three(:) ~= 0) || any(Lia2_Two_Three(:) ~= 0) )

[James Tursa]

The any( ) functions tests for nonzeros, so the ~=0 part in your proposed code is redundant.

[neda eskandari]

thanks a lot