Thread: [Matplotlib-users] Draw only left and top part of frame

Hi,

I draw four subplots that touch each other. Thus the "middle cross" of the
frame is drawn twice and appears to be thicker then the "outer rectangle". I
came across an old post for an custom Axes that would allow to only draw
part of the frame

http://www.mail-archive.com/mat...@li.../msg10242.html

However, when I run the example provided I get an "can't set attribute
error" (see traceback below). I use Python 2.7.1 |EPD 7.0-1 (32-bit) on Mac
OS 10.5.8, which includes matplotlib version 1.0.1.

Is there a fix to get the custom class running again, or is there an
alternative way to achieve what I intend?

Thanks a lot,

Markus

Traceback (most recent call last):
  File "frametest.py", line 165, in <module>
    ax = plt.subplot(sub, projection='frameaxes')
  File
"/Library/Frameworks/Python.framework/Versions/7.0/lib/python2.7/site-packages/matplotlib/pyplot.py",
line 658, in subplot
    a = fig.add_subplot(*args, **kwargs)
  File
"/Library/Frameworks/Python.framework/Versions/7.0/lib/python2.7/site-packages/matplotlib/figure.py",
line 687, in add_subplot
    a = subplot_class_factory(projection_class)(self, *args, **kwargs)
  File
"/Library/Frameworks/Python.framework/Versions/7.0/lib/python2.7/site-packages/matplotlib/axes.py",
line 8380, in __init__
    self._axes_class.__init__(self, fig, self.figbox, **kwargs)
  File
"/Library/Frameworks/Python.framework/Versions/7.0/lib/python2.7/site-packages/matplotlib/axes.py",
line 459, in __init__
    self.cla()
  File "frametest.py", line 138, in cla
    self.frame = self._frame
AttributeError: can't set attribute

Markus Baden, on 2011-04-06 10:18,  wrote:
> Hi,
> 
> I draw four subplots that touch each other. Thus the "middle cross" of the
> frame is drawn twice and appears to be thicker then the "outer rectangle". I
> came across an old post for an custom Axes that would allow to only draw
> part of the frame
> 
> http://www.mail-archive.com/mat...@li.../msg10242.html
> 
> However, when I run the example provided I get an "can't set attribute
> error" (see traceback below). I use Python 2.7.1 |EPD 7.0-1 (32-bit) on Mac
> OS 10.5.8, which includes matplotlib version 1.0.1.
> 
> Is there a fix to get the custom class running again, or is there an
> alternative way to achieve what I intend?

Hi Markus,

I didn't look at that code but I think the alternative you're
looking for is 

ax.spines['right'].set_visible(False)
ax.spines['bottom'].set_visible(False)

where you use the appropriate locations you want changed for the
different subplots axes.

If you're going to have a lot of subplots, you can simplify the
logic by first setting all spines to being invisible, and then
using ax.is_first_col(), is_first_row() and the corresponding
is_last_* methods to set the appropriate spines back to visible.

Like this:

#show only the outside spines
for ax in all_axes:
    for sp in ax.spines.values():
        sp.set_visible(False)
    if ax.is_first_row():
        ax.spines['top'].set_visible(True)
    if ax.is_last_row():
        ax.spines['bottom'].set_visible(True)
    if ax.is_first_col():
        ax.spines['left'].set_visible(True)
    if ax.is_last_col():
        ax.spines['right'].set_visible(True)

best,
-- 
Paul Ivanov
314 address only used for lists,  off-list direct email at:
http://pirsquared.org | GPG/PGP key id: 0x0F3E28F7 

Hi Paul,

Thanks a lot. That was exactly what I was looking for!

Best regards,

Markus

On Thu, Apr 7, 2011 at 1:14 AM, Paul Ivanov <piv...@gm...> wrote:

> Markus Baden, on 2011-04-06 10:18,  wrote:
> > Hi,
> >
> > I draw four subplots that touch each other. Thus the "middle cross" of
> the
> > frame is drawn twice and appears to be thicker then the "outer
> rectangle". I
> > came across an old post for an custom Axes that would allow to only draw
> > part of the frame
> >
> >
> http://www.mail-archive.com/mat...@li.../msg10242.html
> >
> > However, when I run the example provided I get an "can't set attribute
> > error" (see traceback below). I use Python 2.7.1 |EPD 7.0-1 (32-bit) on
> Mac
> > OS 10.5.8, which includes matplotlib version 1.0.1.
> >
> > Is there a fix to get the custom class running again, or is there an
> > alternative way to achieve what I intend?
>
> Hi Markus,
>
> I didn't look at that code but I think the alternative you're
> looking for is
>
> ax.spines['right'].set_visible(False)
> ax.spines['bottom'].set_visible(False)
>
> where you use the appropriate locations you want changed for the
> different subplots axes.
>
> If you're going to have a lot of subplots, you can simplify the
> logic by first setting all spines to being invisible, and then
> using ax.is_first_col(), is_first_row() and the corresponding
> is_last_* methods to set the appropriate spines back to visible.
>
> Like this:
>
> #show only the outside spines
> for ax in all_axes:
>    for sp in ax.spines.values():
>        sp.set_visible(False)
>    if ax.is_first_row():
>        ax.spines['top'].set_visible(True)
>    if ax.is_last_row():
>        ax.spines['bottom'].set_visible(True)
>    if ax.is_first_col():
>        ax.spines['left'].set_visible(True)
>    if ax.is_last_col():
>        ax.spines['right'].set_visible(True)
>
> best,
> --
> Paul Ivanov
> 314 address only used for lists,  off-list direct email at:
> http://pirsquared.org | GPG/PGP key id: 0x0F3E28F7
>
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