Discover MakerZone

MATLAB and Simulink resources for Arduino, LEGO, and Raspberry Pi

Learn more

Discover what MATLAB® can do for your career.

Opportunities for recent engineering grads.

Apply Today

compare two matrices

Asked by Ellen on 23 May 2011
Latest activity Commented on by Niko on 12 Aug 2014

Hi,

I want to compare two matrices for equal values, and I want to know if there is a build-in function to do this. Ihaven't been able to find it in the MATLAB help.

example: A=[1 2 3; 4 5 6; 7 8 9] B=[9 8 7; 6 5 4; 3 2 1] this should return something like result=[0 0 0;0 1 0;0 0 0] so I can see there is an equal number on the same position in both matrices and the position that it is in.

Thanks!

Ellen

0 Comments

Ellen

Products

No products are associated with this question.

2 Answers

Answer by Sean de Wolski on 23 May 2011
Accepted answer
result = A==B;

3 Comments

Ellen on 23 May 2011

Thanks so much.
Sometimes the answer is so simple, you don't think about it

Sincloe Brans on 12 Aug 2014

This doesn't work for two matrix with different dimensions, any way to compare two matrix with different rows and same number of column (eg A=50*16 vs B=100*16)?

Sean de Wolski on 12 Aug 2014
isequal

Sincloe, please ask this as a new question next time!

Sean de Wolski
Answer by Kiarash Ahi on 21 Jul 2014
Edited by Kiarash Ahi on 21 Jul 2014

How if I want two compare the two matrices and get only one digit; I mean 1 if both were the same and 0 if at least two element of the matrices differ?

2 Comments

Kiarash Ahi on 21 Jul 2014

I have just found the answer to my question:

 find(A~=B)
Niko on 12 Aug 2014
isequal(A,B)
Kiarash Ahi

Contact us