How to solve "Subscripted assignment dimension mismatch." error??

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Luís Quesado
Luís Quesado 2017-12-30
评论： Luís Quesado 2018-1-2
Hi. I'm trying to write a piece of code with the follow objective: A cicle "for" that creates an array x with three binary numbers, convertes the binary to decimal number, and then saves the binary of each iteration in an diferent array called genes.
21: genes = [row, 3]
22: for r = 1:row
23: x = round(rand([1,3])) %Creates array with binary number
24: d = bi2de(x) %Convert binary to decimal
25: genes(r,:) = x %Saves binary number of each iteration
The error "Subscripted assignment dimension mismatch." keeps apearing on line 25. I've been trying to correct this for hours, i can't understand what i'm doing wrong. I have already tried to change the array genes on line 25 to genes(r, 3) but still returns an error. Sorry for my English it's not my first language

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采纳的回答

Matt J
Matt J 2017-12-31
This should be
21: genes = nan([row, 3]);

更多回答（1 个）

Walter Roberson
Walter Roberson 2017-12-30
Why do you convert to decimal but then save the binary?
Your x is going to be a row vector of length 3; you would have difficulty if your genes array is is initialized but does not have 3 columns.
  1 个评论
Luís Quesado
Luís Quesado 2018-1-2
I'm trying to create an genetic algorithm. So the decimal corresponds to a certain decision, and the "genes" variable are the genes of that "decision". I'm saving the binary so i can do cross-over and genetic mutation with it later.

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