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

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

Answer 1

[Matt J]

This should be

21: genes = nan([row, 3]);

[Luís Quesado]

That worked! Thank you so much!

Answer 2

[Walter Roberson]

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.

[Luís Quesado]

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.