identification of curve in a graph

i want to draw many curves (each curve has its own function)on the same graph and then pick one of them by mouse and identify it (identify the function it was built with). thank you.

Answer 1

[Andreas Goser]

You need the commands PLOT, HOLD und GINPUT.

[Lydia H]

I have the same question. but GINPUT can't identify the curves.

[Walter Roberson]

You can take the coordinates returned by ginput() and find the distance to the closest point on any of the curves; that will tell you which curve it is.

You could also consider using datacursormode with a custom callback function