[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Plotting a surface from points in the space
From: |
Carlo de Falco |
Subject: |
Re: Plotting a surface from points in the space |
Date: |
Fri, 11 Jan 2008 17:50:25 +0000 |
On 11/gen/08, at 16:34, Luc4 wrote:
Hi! Is it possible to plot a colored surface taking points (x, y,
z) which
are not in a grid? They are taken from pdetool, so they covers a
surface but
are not in grid format. I can only plot them with points in
gnuplot. Is it
possible to interpolate them with a surface? I tried interp2, but
it needs
points to be in a grid.
Thanks! Bye!
Hi Luca,
you might want to take a look at the FPL package in octave-forge,
it plots data on triangular grids defined by (almost) the same data
structure
as that used by pdetool.
for example "FPL2pdesurf (msh, z)", where msh is a structure with the
usual p,e,t fields of a pdetool mesh, does what you want.
if you do not want to install additional packages, a solution could
be using the "trimesh" command which has been moved to core octave in
recent versions, but this would plot just the grid without a coloured
surface ( the equivalent of pdemesh rather than pdesurf)
Carlo