A naive trial at reproducing interactive 3D scatter plots as in gnuplot

Community matplotlib-users
1

line 727, in draw get_current_fig_manager().canvas.draw()

    > File
    > "/usr/lib/python2.4/site-packages/matplotlib/backends/backend_gtk.py",
    > line 234, in draw self._pixmap_prepare (w, h) File
    > "/usr/lib/python2.4/site-packages/matplotlib/backends/backend_gtk.py",
    > line 291, in _pixmap_prepare self._pixmap_height)
    > RuntimeError: could not create GdkPixmap object

Try updating from CVS -- this is unlikely to be due to his script, but
to some changes I made in the gtk backend and then fixed.

JDH

2

just for testing, note that there is a syntax problem in the line I sent (in laby=... one " is missing) .

So you should use:

x = array([0.,1.,2.,3.])
y = array([1.,0.,3.,2.])
z = array([4.,3.,0.,1.])
tmp = pxyz(x, y, z, labx="x", laby="y", labz="z")

sorry for this.

Eric

···

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3

    > line 727, in draw get_current_fig_manager().canvas.draw()
    > File
    >
"/usr/lib/python2.4/site-packages/matplotlib/backends/backend_gtk.py",
> line 234, in draw self._pixmap_prepare (w, h) File
    >
"/usr/lib/python2.4/site-packages/matplotlib/backends/backend_gtk.py",
> line 291, in _pixmap_prepare self._pixmap_height)
    > RuntimeError: could not create GdkPixmap object

Try updating from CVS -- this is unlikely to be due to his script, but
to some changes I made in the gtk backend and then fixed.

That did it.

That's a nice first stab at 3D scatter plots, Eric.

any suggestion of how to improve the
speed/efficiency, esthetic and functionality of such a routine?

I'll let the guru's speak to efficiency, but I have a suggestion for aesthetic
and functionality.

I have done quite a lot of 3D design in AutoCAD, and they have a very nice
"orbit" tool. They superimposed this compass thing over the drawing:

           ---O---
       / \
     / \
    > >
   O O
    > >
     \ /
       \ /
           ---O---

When you press the mouse button down in the N or S pole and then drag it, it
rotates around the E-W axis. If you press the mouse button down outside of
the compass, it rotates around the axis pointing out of the screen. I forget
what it does when you press the button down inside the compass but not on a
pole.

I guess this is way out of scope at this point, but I thought I'd mention it.

Darren

···

On Wednesday 17 August 2005 11:15 am, John Hunter wrote: