Re: [Matplotlib-users] Stick Plot?

[Christopher B. <Chr...@no...>]

Eric Firing wrote:
> Christopher Barker wrote:
>> Has anyone used MPL to make stick plots? If so, can I borrow your code?

> If no one volunteers anything, then I suggest using quiver(..., 
> headlength=0, headwidth=0, headaxislength=0), together with 
> quiverkey(...).  This will effectively give you a stick plot, with lots 
> of flexibility.

I've got a start enclosed. I'm having trouble with a few issues:

1) I'd like to be able to pass in datetime objects for the x axis, but 
that doesn't seem to be supported -- is that a bug? (uncomment the 
datetime list comp to see the error)

2) I'm a little confused about what to put on the y axis -- stick plots 
often use the y axis to provide a scale for the velocites, but I can't 
figure out what units I'd use there -- quiver is scaling the "arrows", 
so I don't know what units they are in.

3) it seemed like I should be able to use angles=array to pass in the 
angles directly, but that didn't work for me.

>  It could be implemented more efficiently in any of 
> several ways, but it would take work to do it well.

yup -- and the whole LineCollection/transforms thing confuses me anyway...

Any suggestions to improve this?

-Chris


-- 
Christopher Barker, Ph.D.
Oceanographer

Emergency Response Division
NOAA/NOS/OR&R            (206) 526-6959   voice
7600 Sand Point Way NE   (206) 526-6329   fax
Seattle, WA  98115       (206) 526-6317   main reception

Chr...@no...