       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?

>

>

> --

> Vicent

>

>

```

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