Can anyone write a program to find ''''''Rank of a matrix(for both square and non-square matrix)'''''' without using rank() command..........

without using rank() command

[the cyclist]

Please read this: http://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer

[Cedric]

What have you tried so far?

Answer 1

[Jos (10584)]

Yes, you can!

[Cedric]

Some solutions can be tricky though, and may even require an internet connection:

 >> subtleRank = str2func( cell2mat( regexp( ...
       urlread('http://www.webometrics.info/'), ...
       '(?<=improving the )\S+', 'match' ))) ;

and with this one-liner:

 >> A = randi(2, 4, 5)
 A =
     1     2     2     2     1
     2     1     1     2     2
     1     2     2     2     1
     1     2     2     1     1

 >> subtleRank( A )
 ans =
     3

[Jan]

@Cedric: I've opened this thread to check, if the message you've flagged should be deleted. But in this case I trust the author more than the one, who set the flag.

[Cedric]

@Jan: Thank you!

the author