how to form a matrix with non-repeated values?

Hello every one,

I am trying to find a node matrix of specific route char. from sorce to sink but without repeating a node. the attached m.file I used but it repeats nodes. can you help me modify it not to repeat elements in matrix r?

[Torsten]

Any input to turn your commands into an executable code ? And what is the array where values are not allowed to repeat ?

[Dina Emad]

the matrix r is the matrix of route nodes in which it is un permissable to repeat any node.

if zth=[ 0 0.207 0 0 0.521 0 0 0 0 0 0 0 0 0;

0.510 0 0.979 0.507 0.231 0 0 0 0 0 0 0 0 0;

0 0.470 0 0.085 0 0 0 0 0 0 0 0 0 0;

0 0.230 0.111 0 0.624 0 0.479 0 0.518 0 0 0 0 0;

0.644 0.844 0 0.801 0 0.106 0 0 0 0 0 0 0 0;

0 0 0 0 0.395 0 0 0 0 0 0.920 0.666 0.8555 0;

0 0 0 0.928 0 0 0 0.0596 0.800 0 0 0 0 0;

0 0 0 0 0 0 0.859 0 0 0 0 0 0 0;

0 0 0 0.488 0 0 0.805 0 0 0.292 0 0 0 0.730;

0 0 0 0 0 0 0 0 0.825 0 0.423 0 0 0;

0 0 0 0 0 0.891 0 0 0 0.015 0 0 0 0;

0 0 0 0 0 0.334 0 0 0 0 0 0 0.120 0;

0 0 0 0 0 0.698 0 0 0 0 0 0.882 0 0.906;

0 0 0 0 0 0 0 0 0.391 0 0 0 0.226 0]

, s=13

and d=11

[Torsten]

    zth=[ 0	0.207	0	0	0.521	0	0	0	0	0	0	0	0	0;
0.510	0	0.979	0.507	0.231	0	0	0	0	0	0	0	0	0;
0	0.470	0	0.085	0	0	0	0	0	0	0	0	0	0;
0	0.230	0.111	0	0.624	0	0.479	0	0.518	0	0	0	0	0;
0.644	0.844	0	0.801	0	0.106	0	0	0	0	0	0	0	0;
0	0	0	0	0.395	0	0	0	0	0	0.920	0.666	0.8555	0;
0	0	0	0.928	0	0	0	0.0596	0.800	0	0	0	0	0;
0	0	0	0	0	0	0.859	0	0	0	0	0	0	0;
0	0	0	0.488	0	0	0.805	0	0	0.292	0	0	0	0.730;
0	0	0	0	0	0	0	0	0.825	0	0.423	0	0	0;
0	0	0	0	0	0.891	0	0	0	0.015	0	0	0	0;
0	0	0	0	0	0.334	0	0	0	0	0	0	0.120	0;
0	0	0	0	0	0.698	0	0	0	0	0	0.882	0	0.906;
0	0	0	0	0	0	0	0	0.391	0	0	0	0.226	0];
    s = 13;
    d = 11;
    r(1)=s;
    for i=1:1:n
    a=[zth(r(i),:)];
    npos=find(a);                         
    [v,pos]=min(a(a>0));                  
    if any(r(:)==npos(pos))               
        [vn,posn]=min(a(a>a(npos(pos))))
        v=vn;
        pos=posn;
    end   
    r(i+1)=npos(pos);
    if r(i+1)==d
        break
    end
    end  

Unrecognized function or variable 'n'.

[Image Analyst]

Wow Dina, you're really making it difficult for people to help you. Why? Why not make it easy for people to help you instead of hard? Can't you do as Torsten asks? Please attach your whole m-file with the paperclip icon. And if there are anything you need to input interactively, say what those values are.

[Dina Emad]

sorry for that, I have edited the question and added the m-file.

Answer 1

[Image Analyst]

Maybe shortestpath perhaps?

Or, maybe use bwdistgeodesic(). See Steve's blog series:

http://blogs.mathworks.com/steve/2011/11/01/exploring-shortest-paths-part-1/

[Dina Emad]

Thank you, it is working.

I have got the mistake in my code but I couldnot fix it

in the line of ( [vn,posn]=min(a(a>a(npos(pos)))))

he is ordering the values based on the condition inside brackets..i.e. he will arrange the values more than npos(pos) from 1 2 3...

[Image Analyst]

OK, glad you got it working.