Re: [matplotlib-devel] quiver2 in svn

2006-06-09 Thread Helge Avlesen
On 6/9/06, Eric Firing <[EMAIL PROTECTED]> wrote:
> Suggestions for improvements in the API or other aspects are welcome.

Hi,
an option for quiver to quickly draw thousands of simple monocolor
arrows each constructed from e.g. 3 line segments would be useful for
someone(like me) that uses matplotlib
for browsing vector plots of large fields (e.g. 800x600). currently
this is not practical
with any of the quiver variants, as it takes minutes to render. I
already use linecollections
to draw high res coastlines, so a faster quiver should be feasible.

another optimization could be perhaps be to arrange for numpy arrays
to be passed directly to the drawing methods instead of the all the
zipping and loops that currently are necessary?

otherwise, quiver2 looks very good for final plots - good work!

Helge


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Re: [matplotlib-devel] collection efficiency improvement

2006-06-15 Thread Helge Avlesen
On 6/15/06, John Hunter <[EMAIL PROTECTED]> wrote:
> How often does it come up that we want a homogeneous line collection,
> ie a bunch of lines segments with the same properties (color,
> linewidth...)?

Hi,
for b&w PS publication quality plotting, this must be a common thing to draw;
contour lines, vectors, xy plots, the axes, tick marks, even fonts
can all be constructed from disjoint line segments, no?
if matplotlib could pass numerix arrays more or less directly to gtk it could
perhaps also become the speed king of plotting packages :)

Helge


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