how to compare two different matrix and set a counter to calculate how many rows matches with all its columns??

%   count1=0;
%for i=1:size(p1)
%     for j=1:size(q1)
%     if find ( p1(i,:)==q1(j,:))
%         count1=count1 + 1;
%     
% 
%     end
%     end
% end

the counter is giving wrong count and how to adjust it..and when i m using here a variable instead of counter then the command prompt returns that it was an undefined function or variable...

Answer 1

[Image Analyst]

Why not simply do

% Get number of rows and columns.
[rows, columns] = size(p1);
% Find number of columns where each element matches.
numMatchingElements = sum(sum(p1==q1) == rows)

?

It's vectorized and uses only 1 line of code (or 2 if you don't know the number of rows in advance).

Answer 2

[Roger Stafford]

You are misusing the 'if' function. Where you write

   if find ( p1(i,:)==q1(j,:))

the condition will be considered true if any of the elements match, not just if they all match. You should write this for a complete match:

   if all(p1(i,:)==q1(j,:))

[wasima tammi]

thanks for ur answer.. but the thing is that when i run the program it shows that the count is undefined variable or function which is actually not.. for this what i can do??

Answer 3

[James Tursa]

The above code is all commented out (begins with % and appears green in the editor). Is this the actual code you are trying to run? (It won't run because it is commented out)

[wasima tammi]

ya its commented out as i have written here .. and this is one part of the code for that reason i commented those parts for debugging ..!