newbie: can't Manipulate ListPlot of recurrence
- To: mathgroup at smc.vnet.net
- Subject: [mg96761] newbie: can't Manipulate ListPlot of recurrence
- From: Tom Roche <tlroche at gmail.com>
- Date: Tue, 24 Feb 2009 05:45:26 -0500 (EST)
summary: I'm trying to Manipulate the logistic map. I can ListPlot it, but when I try to Manipulate, the UI behaves weirdly. details: As advertised by the Subject:, I'm new to Mathematica (specifically 7.0.0 for Students for 32-bit Windows on XP Pro) so please excuse any lapses in terminology. I'd also appreciate pointers to specific docs rather than just an RTFM. I'm trying to model the logistic map y=a y (1-y): http://en.wikipedia.org/wiki/Logistic_map http://mathworld.wolfram.com/LogisticMap.html http://www.phy.duke.edu/~palmer/notebooks/LogisticMap.nb To start with I just tried to plot it, which works: Clear[a, y]; a=3.5; y=0.4; ListPlot[Table[y=a y (1-y),{50}],Joined->True] I'd like to Manipulate a and y, but when I try to Clear[a, y]; Manipulate[ ListPlot[Table[y=a y (1-y),{50}],Joined->True], {{a, 3.5}, 0, 4}, {{y, 0.4}, 0, 1}] I get weird behavior: 1 initially the y slider oscillates 2 initially the plot displays but flashes (apparently between two phases) until I click one of the sliders 3 the y slider will not move 4 the a slider can be dragged, but to no effect (i.e. the plot does not change) 5 there are no error messages What am I doing wrong? and how can I Manipulate this map? TIA, Tom Roche <Tom_Roche at pobox.com>