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

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neda eskandari 2019-6-18

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https://ww2.mathworks.cn/matlabcentral/answers/467764-how-to-solve-error-using-matrix-dimensions-must-agree

评论： neda eskandari 2019-6-18

采纳的回答： James Tursa

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.

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neda eskandari 2019-6-18

please see 108 to 112 rows

neda eskandari 2019-6-18

Thank you Dear

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采纳的回答

James Tursa 2019-6-18

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/467764-how-to-solve-error-using-matrix-dimensions-must-agree#answer_379799

编辑：James Tursa 2019-6-18

在 MATLAB Online 中打开

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.

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James Tursa 2019-6-18

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

neda eskandari 2019-6-18

thanks a lot

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