[R] Plotting multiple curves on a plot

[Rolf Turner]

On 25/08/2008, at 4:49 AM, ascentnet wrote:

>
> Greetings!
>
> I was wondering how to plot multiple equation on the same plot with  
> the
> data?
>
> So if I have three equations:
>
> 1.y= 2.31X + -2.2
> 2.y=  2.27X^2 + 5.63X + 0.52
> 3.y=  -1.53X^3 +  1.92X^2 + -4.72X + 4.57
>
> and a datafram or a 2D matrix.  I would also like the equations in  
> different
> colors, but that is extra!

	?curve

	Note particularly the argument ``add''.

	Note that ``col'' may be given as one of the ... arguments.

	How (on earth) do data frames or matrices come into it?

		cheers,

			Rolf Turner

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