linestyle dash tuple?

Hi,

In the process of documenting "linestyles" for contour, I noticed that in a lot of places, linestyle can be this dash tuple, which is described in Collection as:

    The dash tuple is::

                 (offset, onoffseq),

             where *onoffseq* is an even length tuple of on and off ink
             in points.

But for the life of me, I cannot make this work. Can anyone give me a better explanation, or better yet, a working small example (that we could hopefully add to the example directory)?

Thanks,

Ryan

···

--
Ryan May
Graduate Research Assistant
School of Meteorology
University of Oklahoma

Hi,

In the process of documenting "linestyles" for contour, I noticed that
in a lot of places, linestyle can be this dash tuple, which is described
in Collection as:

               The dash tuple is::

                (offset, onoffseq),

            where *onoffseq* is an even length tuple of on and off ink
            in points.

But for the life of me, I cannot make this work. Can anyone give me a
better explanation, or better yet, a working small example (that we
could hopefully add to the example directory)?

examples/pylab_examples/dash_control.py uses custom on/off ink, but
not the offset. In fact, in the Line2D.set_dashes method, I see that
the offset support is reserved for a TODO. So perhaps you should just
fix the docstring to remove the offset language and just include the
on/off sequence for ink

    def set_dashes(self, seq):
        """
        Set the dash sequence, sequence of dashes with on off ink in
        points. If seq is empty or if seq = (None, None), the
        linestyle will be set to solid.

        ACCEPTS: sequence of on/off ink in points
        """
        if seq == (None, None) or len(seq)==0:
            self.set_linestyle('-')
        else:
            self.set_linestyle('--')
        self._dashSeq = seq # TODO: offset ignored for now

···

On Thu, Sep 4, 2008 at 3:30 PM, Ryan May <rmay31@...149...> wrote:

Thanks,

Ryan

--
Ryan May
Graduate Research Assistant
School of Meteorology
University of Oklahoma

-------------------------------------------------------------------------
This SF.Net email is sponsored by the Moblin Your Move Developer's challenge
Build the coolest Linux based applications with Moblin SDK & win great prizes
Grand prize is a trip for two to an Open Source event anywhere in the world
http://moblin-contest.org/redirect.php?banner_id=100&url=/
_______________________________________________
Matplotlib-devel mailing list
Matplotlib-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/matplotlib-devel