Re: too many {{}}'s for listplot
- To: mathgroup at smc.vnet.net
- Subject: [mg38397] Re: too many {{}}'s for listplot
- From: "Steve Luttrell" <luttrell at _removemefirst_westmal.demon.co.uk>
- Date: Fri, 13 Dec 2002 04:12:22 -0500 (EST)
- References: <at9d0g$q2s$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Use %[[1]] rather than % in your expression. Steve Luttrell "encinosa" <mencinosa1 at comcast.net> wrote in message news:at9d0g$q2s$1 at smc.vnet.net... > i am trying to do a poincare map. i generate x[t] and x'[t]. i write > > z2 = Table[Evaluate[{x[t] , x'[t]} /. %], {t, 0, 10, .005}] > ListPlot[z2] > > and i get a set of values that looks like > > {{0.517671, 9.75893}}, {{0.562696, 8.33465}}, {{0.601599, > 7.26733}}, {{0.635675, 6.38612}},.... > > the problem is when i use > > ListPlot[z2] > > i get the dreaded "is not a list of numbers" error. if i remove the extra > parenthesis by hand it works, but thats a tedious business several hundred > points. i am sure this is a simple thing to fix. i would appreciate any > help. > > mario > > >