Dynamic 2D ListLinePlot PlotRange
- To: mathgroup at smc.vnet.net
- Subject: [mg98228] Dynamic 2D ListLinePlot PlotRange
- From: Bryce Schober <bryce.schober at dynonavionics.com>
- Date: Fri, 3 Apr 2009 04:35:24 -0500 (EST)
I'm a bit of a newbie here, trying to build up some data visualization tools. I've already gotten a ListLinePlot working well with slider to adjust xmin and xmax. I was hoping that I could set PlotRange to All for the Y axis and it would adjust for the Y-values in the dynamically specified x range, but no such luck. Is there some other way to not have to do the y-axis range calculation myself? I suppose some explanation of the dataset is desired. I have something like: { {{x11,y11},{x12,y12},{x13,y13},...,{x1m,y1m}}, {{x21,y21},{x22,y22},{x23,y23},...,{x2n,y2n}}, } , where the x values and lengths are heterogeneous between xy lists 1 and 2 This makes the calculation of ymin and ymax very non-straightforward to me, and re-calculation unacceptably slow on 20k+ data points per list. The dynamic x-axis plot scaling actually goes very smoothly, by using a construct like: Show[ ListLinePlot[data,PlotRange -> All,], PlotRange ->Dynamic[{{curxmin, curxmax},All}], ] I've tried various ways to get at the problem, and the closest I've gotten is something like: Map[ {Min[#], Max[#]} &, Map[ (Select[ #, ( #[[1]] > tmin && #[[1]] < tmax ) & ]) &, mydata ][[All, All, 2]] ] Which get me basically the result I want, but is really slow to evaluate, making it undesirable as Dynamic[]. Any ideas? -- Bryce Schober
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