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I'm trying to plot the solution of Van der Pol's oscillatory equation. However, I encounter a problem each time I combine *Callout, ListPlot and ListLinePlot*. My Mathematica version (*Mathematica 8.0 on 32-bits Computer*) continues to breakdown whenever I decide to plot their Legend on the same graph. Actually, Mariusz Iwaniuk has answered me (see Disparateness in Simple pendulum plot) but made use of another version which was not compatible with mine. When I pasted it on my Mathematica version, it failed to work. I tried reaching him but couldn't. Howbeit, I really appreciate him. Now, the particular problem's solution is $y=\sin t$. The question is genuine as we intend to submit the paper soon. I'll also love if more than two plots of $\sin t$ using *Callout, ListPlot and ListLinePlot* are plotted together. Normally, I need to plot about six solutions of $\sin t$ (same domain) on the same graph and make one legend for all. For intance, here are the codes and graphs

```
Needs["PlotLegends`"]
p1 = ListPlot[Table[{i, Sin[i]}, {i, 1, Stepst, 0.5}],
PlotMarkers -> {"\[RightTriangle]", 20}, PlotStyle -> {Blue},
AxesLabel -> {"h", "x"}, PlotLabel -> "DATA 1 and DATA 2",
PlotLegend -> {"DATA 1"}]
p2 = ListLinePlot[
Table[{i, Sin[i] + RandomReal[{-0.01, 0.01}]}, {i, 1, Stepst, 0.1}],
PlotLabels -> {Callout["DATA 1", {Scaled[0.5], Above}]},
PlotLegend -> {"DATA 2"}]
Show[p1,p2]
```

Can anyone provide a solution or an alternative?

Use the documentation that comes with your version of Mathematica. M8.0 does not support

`Callout`

. – Szabolcs – 2018-03-06T16:21:53.923@ Szabolcs. I don't understand you! – Omojola – 2018-03-06T16:23:27.613

Assuming that you are asking why this code does not work: Mathematica version 8.0 does not support

`Callout`

. However, you should phrase the question better. I cannot see an actual question in this post. – Szabolcs – 2018-03-06T16:26:45.273@ Szabolcs. I have done that! – Omojola – 2018-03-06T16:30:02.367

2

`Callout`

was introduced in v11, so it won't work in your version. – rcollyer – 2018-03-06T16:30:09.133@ rcollyer. Any way out? – Omojola – 2018-03-06T16:35:40.007

1Remove the

`PlotLabels`

option, entirely, it's a 10.4 option. Then, it should combine without issue, well you'll still have to move the legends around, and I can't help with that, I don't know the`PlotLegends``

package. – rcollyer – 2018-03-06T16:39:43.910@ rcollyer. I have tried it before but still had the same problems. It would plot but not on thesame domain. Meanwhile, I removed the PlotLabels you told me to remove. It only brought out "DATA 2" as legend. – Omojola – 2018-03-06T16:47:24.713

2You could maybe simplify your question, as "How can I do [...] with Mathematica 8"? – anderstood – 2018-03-06T16:58:16.963

1Don't use uninformative phrases such as "I'm having problems with..." or "Difficulty in using..." in a title. Also, your problem has nothing whatsoever to do with van der Pol's equation, so delete it from the title. – David G. Stork – 2018-03-06T18:03:28.547

@ David G. Stork. The problem I'm solving is a kind of Van der Pol equation. The solution is $sin t$. Thank you for the corrections. – Omojola – 2018-03-07T16:10:43.057