Synchronize intersection points of two pairs of curves with fminsearch

Question

I have two pairs of curves and every pair has an intersection point at a different time value (x-value). Now I need to move one curve of each pair e

Answer 1

There is no need for fmincon - the error finally was a quite simple one.

In this line: t2 = t2 - d I assummed t2 would be the original one from the initial function call, but thats not right. It is overwritten with every iteration and therefore increasing gradually.

A temporary variable tt solved the problem.

Final result:

function [ t1,x1,y1,t2,x2,y2 ] = findIntersectPair(t1,x1,y1,t2,x2,y2)

[d,dxy] = fminsearch(@findDelay,0);

function dxy = findDelay( d )
    tt = t2 - d;
    ipx = InterX([t1;x1],[tt;x2]);
    ipy = InterX([t1;y1],[tt;y2]);
    dxy = abs(ipx(1)-ipy(1));
end

[t1,x1,y1,x2,y2] = deal(t1,x1,y1,x2,y2);
t2 = t2 - d;

end

gives the desired plot: