Another possible option is to use PiCTeX, available at CTAN. With LaTeX, you have to load the PiCTeX macros and then insert the code for your graph within a \beginpicture...\endpicture environment. I've used this with LaTeX, but never with LyX.

Liviu Andronic wrote:
On 6/25/09, voidie <[email protected]> wrote:
 i would like to plot a simple function like f(x)=3x^2. I know there

You could also do it with Sweave, but this would require knowledge of R.
Liviu


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