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MathGroup Archive 2004

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Re: listplot and plot of the same function display in different scale...

  • To: mathgroup at smc.vnet.net
  • Subject: [mg51635] Re: [mg51617] listplot and plot of the same function display in different scale...
  • From: Bob Hanlon <hanlonr at cox.net>
  • Date: Wed, 27 Oct 2004 23:42:37 -0400 (EDT)
  • Reply-to: hanlonr at cox.net
  • Sender: owner-wri-mathgroup at wolfram.com

Needs["Graphics`"];

solution=NDSolve[
      {y'[t]==-y[t],y[0]==1},
      {y},{t,0,7}];

Plot[Evaluate[y[t]/.solution],{t,0,7},
    Epilog->{Red,PointSize[0.015],
        Point/@
          Table[Flatten[{t, y[t]}/.solution,1],
            {t,0,7,0.25}]}];


Bob Hanlon

> 
> From: sean kim <sean_incali at yahoo.com>
To: mathgroup at smc.vnet.net
> Date: 2004/10/27 Wed AM 01:54:41 EDT
> To: mathgroup at smc.vnet.net
> Subject: [mg51635] [mg51617] listplot and plot of the same function display in 
different scale...
> 
> Hello group, 
> 
> let's say you want to take a few points from an
> interploating function and ListPlot it. and then show
> it together with the graph object from Plot. 
> 
> so...
> 
> solution = NDSolve[{y'[t] == -y[t], y[0] == 1}, {y},
> {t, 0, 7}];
> 
> g0 = Plot[Evaluate[y[t] /. solution], {t, 0, 7},
> DisplayFunction -> Identity];
> g1 = ListPlot[Flatten[Table[Evaluate[y[t]/.solution],
> {t, 0, 7, 0.05}]],PlotStyle -> PointSize[0.015],
> DisplayFunction -> Identity];
> 
> Show[g0, g1, DisplayFunction -> $DisplayFunction]
> 
> will show two plots in one graph, but plots have their
> own axis scale. the Plot[] object seems to be shrunk
> in scales due to ListPlot[] object having more points.
> (due to being tabled)
> 
> How do i fix this so that both Plot have same axis
> scales? ( I want to show dots from ListPlot to overlay
> on top of Plot graph. )
> 
> Thanks in advance for any insights. 
> 
> 
> sean 
> 
> 
> 		
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