Need some help using plot 2d



Thanks for the reply, The highlighting thing is not exactly what I'm looking
for tho, but it's not important.
Thanks for all the help!

2009/10/19 Mario Rodriguez <biomates at telefonica.net>

>
> >
> > I'm curious tho. Why "norotate border" ? I tried removing it, and it
> > still worked.
>
> These settings correspond to gnuplot defaults and you can remove them. I
> copied and pasted the gnuplot code automatically generated by the draw2d
> command; they are strictly necessary when you want to change these
> defaults.
>
>
> > The highlighting was not what I was looking for.
> > I wanted the highlight circle to be wherever One X num met another Y
> > num ( such as -5x&-11y ; 0x&-1y ; 2.5x&4y )
>
> You can store in variable myx the specific x's you want to highlight:
>
> ( f(x) := 2*x-1 ,
>  myx: [-5, 0, 2.5] ,
>  pts : makelist([i,f(i)], i, myx) ,
>  wxdraw2d(
>     grid = true,
>     explicit(f, x, -5, 5),
>     xtics = [-5,1,5],
>     color = red,
>      point_type = circle,
>     point_size = 2,
>      points(pts)) ) $
>
> In case you have an special interest in x= -5, 0 and 2.5, perhaps this
> version is better for you (the trick is a call to function setify):
>
> ( f(x) := 2*x-1 ,
>  myx: [-5, 0, 2.5] ,
>  pts : makelist([i,f(i)], i, myx) ,
>  wxdraw2d(
>     grid = true,
>     explicit(f, x, -5, 5),
>     xtics = setify(myx),
>     color = red,
>      point_type = circle,
>     point_size = 2,
>      points(pts) ) ) $
>
>
> If you prefer function plot2d, similar ideas could be applied.
>
> --
> Mario
>
>