What does X = [X Y] mean ?

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Bachtiar Muhammad Lubis
回答： Breilyn Bautista 2019-11-17
I have the code approximately like this :
Word =[];
for m = 1 : N
Letter = read_letter(img, num_letters) %read_letter is the file function to correlate my .mat with character image(img) and then determining that img as a letter eg.('a','b' or 'c' ect.)
Word = [Word Letter];
end
So the question is. Are the values inside of Word variable are letters ? Additional:Does Word variable works like Unary Operation ?
Because i can't access this array to take its values with simple for loop like :
chars = ''; % i dont know whether this is necessary or nah
for m = 1 : length(Word)
if Word(m) == 'a' || Word(m) == 'b'
chars = 'character is a or b !';
end
end
disp(chars);
  1 个评论
Stephen23
Stephen23 2018-10-30
编辑：Stephen23 2018-10-30
"What does X = [X Y] mean"
It is a concatenation operator:
https://www.mathworks.com/help/matlab/matlab_prog/matlab-operators-and-special-characters.html
"Does Word variable works like Unary Operation ?"
How can a variable "work like" an operator?

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采纳的回答

Image Analyst
Image Analyst 2018-10-30
I don't know exactly what read_letter does, but if it returns a character, then Word is a character array - basically a vector (1-D array) of letters.
If you need more help, attach
  1. your .mat file,
  2. your image file, and
  3. your code for the read_letter() function
  2 个评论
Bachtiar Muhammad Lubis
Bachtiar Muhammad Lubis 2018-11-5
编辑：Bachtiar Muhammad Lubis 2018-11-5
this is my files. Sorry for my late respon. because i didnt get any notification. By the way now i can access the array list. with for loop function.
Image Analyst
Image Analyst 2018-11-5
OK. Not sure why you didn't get an email. It automatically does that. You might want to check your junk mail folder or check the email you have registered here to make sure it's right.
Thanks for doing #3 (attaching code). I'll get notified when you've done #1 and #2.

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更多回答（1 个）

Breilyn Bautista
Breilyn Bautista 2019-11-17
como se realisa esta operacion en matlad A-[X'Y']

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