Re: combining contourplot and regionplot
- To: mathgroup at smc.vnet.net
- Subject: [mg98465] Re: combining contourplot and regionplot
- From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
- Date: Fri, 10 Apr 2009 04:55:14 -0400 (EDT)
- Organization: Uni Leipzig
- References: <grkgpr$72h$1@smc.vnet.net>
- Reply-to: kuska at informatik.uni-leipzig.de
Hi,
ContourPlot[
Arg[Gamma[x + I*y]] == 0, {x, -5, 5}, {y, -5, 5},
RegionFunction -> Function[{x, y, z}, Abs[Gamma[x + I*y]] > 1]
]
Regards
Jens
Cristina Ballantine wrote:
> Given a complex function (say the Gamma function), I would like to plot
> all points (x,y), -10<x<10, -10<y<10, that map to the interval (1,
> infinity). I need to plot all points with Arg[Gamma[x+I*y]]==0 and
> Abs[Gamma[x+I*y]]>1. Solutions to the equation can be plotted with
> ContourPlot. Solutions to the inequality can be plotted with RegionPlot.
> But how do I plot points that satisfy BOTH the equation and the inequality?
> A similar question has been asked on the Forum before but did not receive
> an answer. I am hoping this time someone can help. Thank you.
>
> Cristina
>