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# Re: 3-D graphing software for Linux?

```Have a look on this website
http://www.scilab.org/

This is scilab, designed in France. It is a numerical tool (and seldom
symbolic), so it means that was done for high computing capabilities.

After installing, you will have a command line as in any console;
there you can type the corresponding instruction (like MatLab, don't
know if you have seen it).

e.g. > 2+3
5
> sin(%pi/2)
1

In scilab, almost all is a matrix, or vector, so if you type
> t=[3;2;1]
it mean that t is a 3 rows, 1 column vector, but if you type
> t=[3,2,1]
with commas means t is a 1 row, 3 columns vector.
You can apply math equations to matrices. So
F=sin(t)
returns a vector F with values corresponding to sin for each element.

If you need to plot one against each other, just do
>plot2d(t,F)
if you have 3 vectors (all same length), just do
>plot3d(t,F,G)

Scilab is plenty of options, let us know if you need more help.

Kind regards,

Oscar Blanco

2007/11/25, Marcelo Chiapparini <chiappa@oi.com.br>:
> On Thu, 2007-11-22 at 19:28 +0200, Micha Feigin wrote:
> > On Thu, 22 Nov 2007 16:12:41 +0200
> > "Dotan Cohen" <dotancohen@gmail.com> wrote:
> >
> > > On 22/11/2007, Hugo Vanwoerkom <hvw59601@care2.com> wrote:
> > > > Dotan Cohen wrote:
> > > > > 0In an advanced Calculus course, we are dealing with functions with
> 2
> > > > > (and more) variables. Is there any 3-D graphing software for Linux
> > > > > available? Something like Kalgebra, but with a bit more functions
> such
> > > > > as multiple functions graphed at the same time, asymptote min max
> and
> > > > > other significant points, zoom into 3-D graph, graph of derivative
> and
> > > > > integral, etc.
> > > > >
> > > > > I have been directed to look at some math programming languages such
> > > > > as root, octave, and R, but I really need an application, not a
> > > > > language. This app will be used by others in my calculus course,
> > > > > people with no computer background, so these language solutions
> simply
> > > > > will not work for us. Thanks in advance for any advice.
> > > > >
> > > >
> > > > You mean like this:
> > > >
> http://www.esnips.com/doc/39163b3c-a004-464d-a0a9-9655da7eb0f5/filltest.2
> > > >
> > > > Hugo
> > >
> > > Yes, programs such as Kalgebra produce graphs like that.
> > >
> > > Dotan Cohen
> > >
> > > http://what-is-what.com
> > > http://gibberish.co.il
> >
> > Have a look at octave and scilab, there is also maxima for linear algebra
> but I
> > don't know if it does graphs
>
> Axiom does 3d plottings of parametrized curves-surfaces. You can export
> the result to ps or xmap.
>
> Marcelo
>
> --
> Marcelo Chiapparini
> chiappa@oi.com.br
>
>
> --
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>

--
Oscar Blanco García
Ingeniero Electrónico - Universidad Nacional de Colombia
Teléfono: Casa: +57 1 687 0019
Celular: +57 3133890451
Carrera 123B # 131-66 Bloque 55 Apartamento 402
Bogotá, Colombia

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