matplotlib-users Mailing List for matplotlib

Thanks for the fix and the link!
Tom
On Nov 18, 2009, at 7:56 PM, Jae-Joon Lee wrote:
> http://matplotlib.sourceforge.net/api/artist_api.html?highlight=fancyarrowpatch#matplotlib.patches.FancyArrowPatch
>
> try to set shrinkA and shrinkB to 0.
>
> Also see below for how arrows are drawn.
>
> http://matplotlib.sourceforge.net/users/annotations_guide.html#annotating-with-arrow
>
> -JJ
>
>
> On Thu, Nov 19, 2009 at 9:46 AM, Thomas Robitaille
> <tho...@gm...> wrote:
>> Hello,
>>
>> I'm trying to plot two perpendicular arrows and getting them to 
>> start from
>> the exact same point. If I try the following:
>>
>> ---
>>
>> import matplotlib
>> matplotlib.use('Agg')
>> import matplotlib.pyplot as mpl
>> from matplotlib.patches import FancyArrowPatch
>>
>> fig = mpl.figure()
>> ax = fig.add_subplot(111)
>>
>> arrow1 = FancyArrowPatch(posA=(0.5, 0.5), posB=(0.6, 0.5), \
>> arrowstyle='-|>', mutation_scale=20.)
>>
>> arrow2 = FancyArrowPatch(posA=(0.5, 0.5), posB=(0.5, 0.6), \
>> arrowstyle='-|>', mutation_scale=20.)
>>
>> ax.add_patch(arrow1)
>> ax.add_patch(arrow2)
>>
>> fig.savefig('fancyarrow.png')
>>
>> ---
>>
>> then the result are two perpendicular arrows but the arrows don't 
>> touch at
>> their origin (see attached image). Is there a way to fix this?
>>
>> Cheers,
>>
>> Tom
>>
>>
>> ------------------------------------------------------------------------------
>> Let Crystal Reports handle the reporting - Free Crystal Reports 
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>>

http://matplotlib.sourceforge.net/api/artist_api.html?highlight=fancyarrowpatch#matplotlib.patches.FancyArrowPatch
try to set shrinkA and shrinkB to 0.
Also see below for how arrows are drawn.
http://matplotlib.sourceforge.net/users/annotations_guide.html#annotating-with-arrow
-JJ
On Thu, Nov 19, 2009 at 9:46 AM, Thomas Robitaille
<tho...@gm...> wrote:
> Hello,
>
> I'm trying to plot two perpendicular arrows and getting them to start from
> the exact same point. If I try the following:
>
> ---
>
> import matplotlib
> matplotlib.use('Agg')
> import matplotlib.pyplot as mpl
> from matplotlib.patches import FancyArrowPatch
>
> fig = mpl.figure()
> ax = fig.add_subplot(111)
>
> arrow1 = FancyArrowPatch(posA=(0.5, 0.5), posB=(0.6, 0.5), \
>        arrowstyle='-|>', mutation_scale=20.)
>
> arrow2 = FancyArrowPatch(posA=(0.5, 0.5), posB=(0.5, 0.6), \
>        arrowstyle='-|>', mutation_scale=20.)
>
> ax.add_patch(arrow1)
> ax.add_patch(arrow2)
>
> fig.savefig('fancyarrow.png')
>
> ---
>
> then the result are two perpendicular arrows but the arrows don't touch at
> their origin (see attached image). Is there a way to fix this?
>
> Cheers,
>
> Tom
>
>
> ------------------------------------------------------------------------------
> Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
> trial. Simplify your report design, integration and deployment - and focus
> on
> what you do best, core application coding. Discover what's new with
> Crystal Reports now. http://p.sf.net/sfu/bobj-july
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>
>

Hello,
I'm trying to plot two perpendicular arrows and getting them to start 
from the exact same point. If I try the following:
---
import matplotlib
matplotlib.use('Agg')
import matplotlib.pyplot as mpl
from matplotlib.patches import FancyArrowPatch
fig = mpl.figure()
ax = fig.add_subplot(111)
arrow1 = FancyArrowPatch(posA=(0.5, 0.5), posB=(0.6, 0.5), \
 arrowstyle='-|>', mutation_scale=20.)
arrow2 = FancyArrowPatch(posA=(0.5, 0.5), posB=(0.5, 0.6), \
 arrowstyle='-|>', mutation_scale=20.)
ax.add_patch(arrow1)
ax.add_patch(arrow2)
fig.savefig('fancyarrow.png')
---
then the result are two perpendicular arrows but the arrows don't 
touch at their origin (see attached image). Is there a way to fix this?
Cheers,
Tom