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


See changes in Table inside ListPlot

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[
      Table[{t,
          Evaluate[
            y[t] /. solution\[LeftDoubleBracket]1,
                1\[RightDoubleBracket]]}, {t, 0, 7, 0.05}],
      PlotStyle -> PointSize[0.015], DisplayFunction -> Identity];

Show[g0, g1, DisplayFunction -> $DisplayFunction]


That's all.


sean kim wrote:

>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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