On Wed, Apr 20, 2011 at 07:04:43PM +0200, Mario Rodriguez wrote:
> > What are these? I've never come across them do I need to be worried
> > about them?
> >
>
> They help you to allocate points on the plane, they mark the coordinates
> on the axes.
Ah, ok.
> > How can I figure out what + signs are part of the curve without getting
> > confused with the other individual + signs?
> >
>
> Hard to know; see the plot below. Gnuplot makes use of different symbols
> to draw only one object. For example, the plus symbol in the vertices of
> the rectangle.
Yep, especially that produced by plot2d is much easier to understand.
> > Taking this concept slightly further, does this mean in theory I could
> > convert other images (diagrams for example), to ascii?
> >
>
> Judge for yourself:
>
>
> load(draw) $
> set_draw_defaults (user_preamble="set terminal dumb")$
>
> draw2d(
> xrange = [0, 15],
> yrange = [-5, 10],
>
> triangle([1, -3],[2, 4],[5, 2]),
> rectangle([4, 6], [9, 8]),
<snip>
Interesting, will have to play with this a bit more, but looks
promising. I'm sure it'd be 100% usable when embossed in Braille onto
paper, but with a one line Braille display, takes a bit of getting used
to the shapes.
The graphs especially are fantastic, thanks very much for your help!
This hopefully solves the main problem I was having accessing the CAS:)
Cheers,
Dan