Re: too many {{}}'s for listplot
- To: mathgroup at smc.vnet.net
- Subject: [mg38401] Re: too many {{}}'s for listplot
- From: "Allan Hayes" <hay at haystack.demon.co.uk>
- Date: Fri, 13 Dec 2002 04:18:41 -0500 (EST)
- References: <at9d0g$q2s$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Mario:
z2={{{0.517671, 9.75893}}, {{0.562696, 8.33465}}, {{0.601599,
7.26733}}, {{0.635675, 6.38612}}};
Flatten[z2,1]
{{0.517671,9.75893},{0.562696,8.33465},{0.601599,7.26733},{0.635675,6.38612}
}
"encinosa" <mencinosa1 at comcast.net> wrote in message
news:at9d0g$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
>
>
>