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Fix violin 'box' #3405

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merged 2 commits into from
Jan 17, 2019
Merged

Fix violin 'box' #3405

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466c506
fix bug using 'stick' in violin plot with non-varying data
Jan 16, 2019
413e334
simplify expression for quartiles and stick in violin.
Jan 16, 2019
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27 changes: 13 additions & 14 deletions holoviews/plotting/bokeh/stats.py
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Original file line number Diff line number Diff line change
Expand Up @@ -347,23 +347,22 @@ def _kde_data(self, el, key, **kwargs):
if not len(values):
pass
elif self.inner == 'quartiles':
for stat_fn in self._stat_fns:
stat = stat_fn(values)
if len(xs):
if len(xs):
for stat_fn in self._stat_fns:
stat = stat_fn(values)
sidx = np.argmin(np.abs(xs-stat))
sx, sy = xs[sidx], ys[sidx]
else:
continue
segments['x'].append(sx)
segments['y0'].append(key+(-sy[-1],))
segments['y1'].append(sy)
segments['x'].append(sx)
segments['y0'].append(key+(-sy[-1],))
segments['y1'].append(sy)
elif self.inner == 'stick':
for value in values:
sidx = np.argmin(np.abs(xs-value))
sx, sy = xs[sidx], ys[sidx]
segments['x'].append(sx)
segments['y0'].append(key+(-sy[-1],))
segments['y1'].append(sy)
if len(xs):
for value in values:
sidx = np.argmin(np.abs(xs-value))
sx, sy = xs[sidx], ys[sidx]
segments['x'].append(sx)
segments['y0'].append(key+(-sy[-1],))
segments['y1'].append(sy)
elif self.inner == 'box':
xpos = key+(0,)
q1, q2, q3 = (np.percentile(values, q=q)
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7 changes: 7 additions & 0 deletions holoviews/tests/plotting/bokeh/testviolinplot.py
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Original file line number Diff line number Diff line change
Expand Up @@ -91,6 +91,13 @@ def test_violin_empty(self):
self.assertEqual(patch_source.data['xs'], [[]])
self.assertEqual(patch_source.data['ys'], [np.array([])])

def test_violin_single_point(self):
data = {'x': [1], 'y': [1]}
violin = Violin(data=data, kdims='x', vdims='y').opts(plot=dict(inner='box'))

plot = bokeh_renderer.get_plot(violin)
self.assertEqual(plot.handles['x_range'].factors, ['1'])

###########################
# Styling mapping #
###########################
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