something wrong when run TestSimpleTracker.m

[youxiaobo]

hi Jean,
Very nice algorithm. However, I have a question I hope you can help me with. Because there is no munkres.m file，I download munkres.m from this link munkres-assignment-algorithm .
when I run TestSimpleTracker.m, there is some error message as follows:

   Index in position 1 exceeds array bounds (must not exceed 8).
   error in hungarianlinker (line 116)
        target_distances(i) = sqrt ( D ( i , target_indices(i)) );

then I step into hungarianlinker.m, from this code: [ target_indices total_cost ] = munkres(D);, I get the result "target_indices" which is a matrix. But I didn't understand the code below.

why do you use target_indices(i) rather than target_indices(i,j)?
Is there something wrong with the munkres.m? can you please offer munkres.m for me?

Look forward to your reply!

Regards,
You Bo

[katherine-brown]

Hi Jean,

I am having the same issue - it seems the test code no longer works out of the box. I am running Matlab 2020a, perhaps that is the issue?

I would really appreciate any help you can give.

thank you,
K. Brown

[lipilian]

I modify the code to
D = D(:)
target_distance(i) = sqrt(D1(i));

[juldub07]

@youxiaobo @katherine-brown, @lipilian is correct. Also, target_indices needs to be converted to double or single before line 103 or else -1s become 1s.
target_indices = double(target_indices); target_indices ( target_indices == 0 ) = -1;

[SamuelPoincloux]

Apparently we get this error if we use an old version of the munkres.m code, which outputs the assignment (here "target_indices") as a matrix and not a vector.
It can be solved without modifying the code by using the latest version available here.