FancyArrows don't connect

Hello,

I'm trying to plot two perpendicular arrows and getting them to start from the exact same point. If I try the following:

fancyarrow.png

···

---

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

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 <thomas.robitaille@...287...> 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

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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 > <thomas.robitaille@...287...> 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
Matplotlib-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/matplotlib-users