Re: phase portraits
- To: mathgroup at smc.vnet.net
- Subject: [mg116192] Re: phase portraits
- From: James <icorone at hotmail.com>
- Date: Fri, 4 Feb 2011 01:41:55 -0500 (EST)
Hi,
By far the nicest function in Mathematica to use for phase portraits is StreamPlot. I believe that was a V7 feature. For example, take:
dx=x^2+2xy+y
dy=2x-3y^2
then:
StreamPlot[{x^2+2xy+y,2x-3y^2},{x,-5,5},{y,-5,5}]
will draw a nice phase portrait.