       Re: question on Plot and Show plus Axis Labels

• To: mathgroup at smc.vnet.net
• Subject: [mg72628] Re: question on Plot and Show plus Axis Labels
• From: dh <dh at metrohm.ch>
• Date: Fri, 12 Jan 2007 06:37:58 -0500 (EST)
• References: <eo5331\$5o4\$1@smc.vnet.net>

```Hi Gopinath,
to plot a list of numbers the command is: ListPlot, not Plot. Maybe you
fooled yourself.
Daniel

Gopinath Venkatesan wrote:
> My sincere thanks to David, Bill, Pratik and Bob.
>
> I got it working now. I used MultipleListPlot for the problem, with Frames -> True. I think if I dont use Frames, rotating the y-axis label is difficult. Here is a sample of my code.
>
> MultipleListPlot[{y0, y, y1, y2}, PlotJoined -> {True, True, True, True}, Frame -> True,
>   FrameLabel -> {FontForm["XaxisLabelhere", {"Courier-Bold", 14}], FontForm["YaxisLabelhere",
>      {"Courier-Bold", 14}]}, PlotStyle -> {{Thickness[0.005], GrayLevel[0.75]}, {Thickness[0.005], GrayLevel},
>     {GrayLevel[0.75], Dashing[{0.009}]}, {GrayLevel, Dashing[{0.009}]}},
>   PlotLegend -> {"Analytical 1", "Analytical 2", "Test 1", "Test 2"}, ImageSize -> 500, PlotRange -> All,
>   RotateLabel -> True, SymbolShape -> {None, None, None, None}, LegendPosition -> {-0.7, -0.45}, LegendSize -> {0.7, 0.3}]
>
> Bob,
> I see that Plot is working if we directly substitute the functions inside, as well as to some functions with a rule, and in some cases, we need Evaluate[] for the same. But somehow, when I used Plot[] for my dataset, its giving me error saying 'not a machine-size real number at x=1.0000+'. The command MultipleListPlot works great.
>
> For example, see the below code.
>
> n = 5;
> x = Table[i, {i, -n, n}];
> y1[x_] := x;
> y2[x_] := x^2;
> y3[x_] := x^3;
> p1 = Table[y1[x[[i]]], {i, 1, 2*n + 1}];
> p2 = Table[y2[x[[i]]], {i, 1, 2*n + 1}];
> p3 = Table[y3[x[[i]]], {i, 1, 2*n + 1}];
> Plot[{y1[x], y2[x], y3[x]}, {x, -n, n}];
> Plot[p1, {x, -n, n}];
>
> Plot works fine when we directly substitute the functions, but not when we place the table of data already generated. Placing Evaluate[] or //N in Table doesnt help too.
>
> Gopinath Venkatesan