Re: Finding middle of edge in a graph
- To: mathgroup at smc.vnet.net
- Subject: [mg90012] Re: Finding middle of edge in a graph
- From: Bill Rowe <readnews at sbcglobal.net>
- Date: Thu, 26 Jun 2008 04:43:50 -0400 (EDT)
>---- Yedidel Elhayany <yedidel at gmail.com> wrote:
>I have a graph which I need to find the middle of every edge and add a
>vertice in that point. What function returns me all the middle points
>of edged in a graph?
Others (Bob Hanlon) have answered the question you posed. So, I
will point out you don't need to know the actual coordinates of
the center to place a point at the center of a plot. Instead,
you can use scaled coordinates. That is:
Plot[f[x], {x, xmin, xmax}, Epilog->{Red, PointSize[.02],Point[Scaled at {.5,.=
5}]}]
will put a red point at the center of your plot regardless of
details of f, xmin and xmax.