Undefined function 'curveintersect' for input arguments of type 'double'.

I have two non-linear sets of data A & B which I have plotted against specific variable(K) on the same graph. Neither A nor B have a common data point at which they intersect, however, when their dots are connected and they are graphed, the lines do intersect. Is there a command to calculate the values at this point? when I use curveintersect function, Undefined function 'curveintersect' for input arguments of type 'double'.

Answer 1

[Mahdi]

curveintersect is not a built-in function in MATLAB, so you cannot use it unless you have made a function file yourself.

Perhaps this would help:

http://www.mathworks.com/matlabcentral/fileexchange/30502-find-intersection-of-two-lines

Alternatively, you can use interpolating (interp1) functions and see where they intersect.