Re: Plotting a function of 3 variables ?

[Martin Helm]

Am 25.04.2012 11:57, schrieb Oisín Ó Cuanacháin:
>
> Hi,
>
>  
>
> I'm trying to visualize a function of 3 variables v = f(x,y,z). So I'm
> wondering is there any appropriate plotting function in Octave? What I
> am thinking of is a 3-D lattice of markers with the colour of the
> marker indicating the function value, like a 3-D scatter plot with
> each point being a different coloured sphere with the colour
> indicating the function's magnitude at that point. The spheres would
> be small relative to the distance between adjacent spheres (the x,y,z
> coordinates to be plotted will be uniformly spaced) so that the figure
> could be rotated and viewed from all angles while still being able to
> see any patterns or trends through the entire lattice. Is there any
> command to achieve something like this ?   
>
>  
>
There is no such function right now which does that. If you can wait
until tonight (middle european time) I can quicly write one in the
evening after work, I would call it lattice3.
Depending on the size of your grids I would guess that you should use
"graphics_toolkit fltk" since gnuplot is utterly slow for anything 3d
related.