Bar Plot does not allow to change linewidth

[CRP]

linewidth for barplots (ie the edge lines of the bars) appears to be fixed at 1. Would it be possible to allow it to be set freely?

[changhiskhan]

What version of pandas are you on?
I just tried it on master and passing in linewidth>1 looks fine. Would you be able to give the latest a shot?

[CRP]

I am on 0.8.1, just upgraded.

Here is my output:

a.plot(kind='bar',stacked=True)
Out[121]: <matplotlib.axes.AxesSubplot at 0x1713d9cd0>

so this works fine. If I specify a linewidth keyword it breaks, as the method bar_f already has a keyword linewidth:

a.plot(kind='bar',stacked=True,linewidth=2)

TypeError Traceback (most recent call last)
in ()
----> 1 a.plot(kind='bar',stacked=True,linewidth=2)

/usr/local/lib/python2.7/site-packages/pandas/tools/plotting.pyc in plot_frame(frame, x, y, subplots, sharex, sharey, use_index, figsize, grid, legend, rot, ax, style, title, xlim, ylim, logy, xticks, yticks, kind, sort_columns, fontsize, secondary_y, *_kwds)
1215 sort_columns=sort_columns, secondary_y=secondary_y,
1216 *_kwds)
-> 1217 plot_obj.generate()
1218 plot_obj.draw()
1219 if subplots:

/usr/local/lib/python2.7/site-packages/pandas/tools/plotting.pyc in generate(self)
573 self._compute_plot_data()
574 self._setup_subplots()
--> 575 self._make_plot()
576 self._post_plot_logic()
577 self._adorn_subplots()

/usr/local/lib/python2.7/site-packages/pandas/tools/plotting.pyc in _make_plot(self)
1075
1076 rect = bar_f(ax, self.ax_pos, y, 0.5, start=start,
-> 1077 label=label, linewidth=1, **kwds)
1078 pos_prior = pos_prior + np.where(mask, y, 0)
1079 neg_prior = neg_prior + np.where(mask, 0, y)

TypeError: f() got multiple values for keyword argument 'linewidth'

[changhiskhan]

Oh I see. For some reason the linewidth keyword defaulted to 1 for the bar plot if stacked was True (I was quickly checking it without stacked). I'll put in a fix.

On Jul 24, 2012, at 3:16 AM, Christian Prinoth wrote:

I am on 0.8.1, just upgraded.

Here is my output:

a.plot(kind='bar',stacked=True)
Out[121]: <matplotlib.axes.AxesSubplot at 0x1713d9cd0>

so this works fine. If I specify a linewidth keyword it breaks, as the method bar_f already has a keyword linewidth:

a.plot(kind='bar',stacked=True,linewidth=2)

TypeError Traceback (most recent call last)
in ()
----> 1 a.plot(kind='bar',stacked=True,linewidth=2)

/usr/local/lib/python2.7/site-packages/pandas/tools/plotting.pyc in plot_frame(frame, x, y, subplots, sharex, sharey, use_index, figsize, grid, legend, rot, ax, style, title, xlim, ylim, logy, xticks, yticks, kind, sort_columns, fontsize, secondary_y, *_kwds)
1215 sort_columns=sort_columns, secondary_y=secondary_y,
1216 *_kwds)
-> 1217 plot_obj.generate()
1218 plot_obj.draw()
1219 if subplots:

/usr/local/lib/python2.7/site-packages/pandas/tools/plotting.pyc in generate(self)
573 self._compute_plot_data()
574 self._setup_subplots()
--> 575 self._make_plot()
576 self._post_plot_logic()
577 self._adorn_subplots()

/usr/local/lib/python2.7/site-packages/pandas/tools/plotting.pyc in _make_plot(self)
1075
1076 rect = bar_f(ax, self.ax_pos, y, 0.5, start=start,
-> 1077 label=label, linewidth=1, **kwds)
1078 pos_prior = pos_prior + np.where(mask, y, 0)
1079 neg_prior = neg_prior + np.where(mask, 0, y)

TypeError: f() got multiple values for keyword argument 'linewidth'

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#1658 (comment)

[CRP]

Thanks, btw, I also noticed an inconsistent handling of x axis formatting: eg the size of xaxis ticklabels is controlled by the fontsize parameter, but this does not affect y axis and/or legend. Further, even if the fontsize keyword is not explicitly specified, there is a default somewhere that overrides matplotlib rc settings. maybe it would be better not to handle fontsize at pandas level and fall back on matplotlib defaults.

[changhiskhan]

Yeah, I think it absolutely makes sense to push as much of the styling down to matplotlib as possible.
We are working on a more unified plotting API that will be part of v0.9, please stay tuned.
Thanks for the feedback

[Aerickk]

I would like to have this graphic with python. can someone help me