Re: Drowing a vertical or horizontal line in a graphic

*To*: mathgroup at smc.vnet.net*Subject*: [mg77315] Re: Drowing a vertical or horizontal line in a graphic*From*: dh <dh at metrohm.ch>*Date*: Wed, 6 Jun 2007 07:30:01 -0400 (EDT)*References*: <f43h19$2sm$1@smc.vnet.net>

Hi Vincent, you can e.g. use Epilog: Plot[(x-1)^2,{x,0,2},Epilog\->{Red,Line[{{1,0},{1,1}}]}] hope this helps, Daniel Vicent wrote: > I am using Mathematica 5 and I have a simple question to ask you. > > I am drawing a function with "Plot" function. > > How can I add a vertical or horizontal line (or several ones) at a > given position? > > For example, I want to draw y = (x-1)^2, and also want a vertical > line just at x = 1, in order to signal the point where that fuction > gets its lower value. > > How can I do it? > > Thank you in advance. > > -- > Vicent > >