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import re
import numpy as np
import pytest
import pandas.util._test_decorators as td
from pandas import DataFrame
import pandas._testing as tm
from pandas.tests.plotting.common import (
_check_axes_shape,
_check_plot_works,
get_x_axis,
get_y_axis,
)
td.versioned_importorskip("matplotlib")
@pytest.fixture
def hist_df():
df = DataFrame(
np.random.default_rng(2).standard_normal((30, 2)), columns=["A", "B"]
)
df["C"] = np.random.default_rng(2).choice(["a", "b", "c"], 30)
df["D"] = np.random.default_rng(2).choice(["a", "b", "c"], 30)
return df
class TestHistWithBy:
@pytest.mark.slow
@pytest.mark.parametrize(
"by, column, titles, legends",
[
("C", "A", ["a", "b", "c"], [["A"]] * 3),
("C", ["A", "B"], ["a", "b", "c"], [["A", "B"]] * 3),
("C", None, ["a", "b", "c"], [["A", "B"]] * 3),
(
["C", "D"],
"A",
[
"(a, a)",
"(b, b)",
"(c, c)",
],
[["A"]] * 3,
),
(
["C", "D"],
["A", "B"],
[
"(a, a)",
"(b, b)",
"(c, c)",
],
[["A", "B"]] * 3,
),
(
["C", "D"],
None,
[
"(a, a)",
"(b, b)",
"(c, c)",
],
[["A", "B"]] * 3,
),
],
)
def test_hist_plot_by_argument(self, by, column, titles, legends, hist_df):
# GH 15079
axes = _check_plot_works(
hist_df.plot.hist, column=column, by=by, default_axes=True
)
result_titles = [ax.get_title() for ax in axes]
result_legends = [
[legend.get_text() for legend in ax.get_legend().texts] for ax in axes
]
assert result_legends == legends
assert result_titles == titles
@pytest.mark.parametrize(
"by, column, titles, legends",
[
(0, "A", ["a", "b", "c"], [["A"]] * 3),
(0, None, ["a", "b", "c"], [["A", "B"]] * 3),
(
[0, "D"],
"A",
[
"(a, a)",
"(b, b)",
"(c, c)",
],
[["A"]] * 3,
),
],
)
def test_hist_plot_by_0(self, by, column, titles, legends, hist_df):
# GH 15079
df = hist_df.copy()
df = df.rename(columns={"C": 0})
axes = _check_plot_works(df.plot.hist, default_axes=True, column=column, by=by)
result_titles = [ax.get_title() for ax in axes]
result_legends = [
[legend.get_text() for legend in ax.get_legend().texts] for ax in axes
]
assert result_legends == legends
assert result_titles == titles
@pytest.mark.parametrize(
"by, column",
[
([], ["A"]),
([], ["A", "B"]),
((), None),
((), ["A", "B"]),
],
)
def test_hist_plot_empty_list_string_tuple_by(self, by, column, hist_df):
# GH 15079
msg = "No group keys passed"
with pytest.raises(ValueError, match=msg):
_check_plot_works(
hist_df.plot.hist, default_axes=True, column=column, by=by
)
@pytest.mark.slow
@pytest.mark.parametrize(
"by, column, layout, axes_num",
[
(["C"], "A", (2, 2), 3),
("C", "A", (2, 2), 3),
(["C"], ["A"], (1, 3), 3),
("C", None, (3, 1), 3),
("C", ["A", "B"], (3, 1), 3),
(["C", "D"], "A", (9, 1), 3),
(["C", "D"], "A", (3, 3), 3),
(["C", "D"], ["A"], (5, 2), 3),
(["C", "D"], ["A", "B"], (9, 1), 3),
(["C", "D"], None, (9, 1), 3),
(["C", "D"], ["A", "B"], (5, 2), 3),
],
)
def test_hist_plot_layout_with_by(self, by, column, layout, axes_num, hist_df):
# GH 15079
# _check_plot_works adds an ax so catch warning. see GH #13188
with tm.assert_produces_warning(UserWarning, check_stacklevel=False):
axes = _check_plot_works(
hist_df.plot.hist, column=column, by=by, layout=layout
)
_check_axes_shape(axes, axes_num=axes_num, layout=layout)
@pytest.mark.parametrize(
"msg, by, layout",
[
("larger than required size", ["C", "D"], (1, 1)),
(re.escape("Layout must be a tuple of (rows, columns)"), "C", (1,)),
("At least one dimension of layout must be positive", "C", (-1, -1)),
],
)
def test_hist_plot_invalid_layout_with_by_raises(self, msg, by, layout, hist_df):
# GH 15079, test if error is raised when invalid layout is given
with pytest.raises(ValueError, match=msg):
hist_df.plot.hist(column=["A", "B"], by=by, layout=layout)
@pytest.mark.slow
def test_axis_share_x_with_by(self, hist_df):
# GH 15079
ax1, ax2, ax3 = hist_df.plot.hist(column="A", by="C", sharex=True)
# share x
assert get_x_axis(ax1).joined(ax1, ax2)
assert get_x_axis(ax2).joined(ax1, ax2)
assert get_x_axis(ax3).joined(ax1, ax3)
assert get_x_axis(ax3).joined(ax2, ax3)
# don't share y
assert not get_y_axis(ax1).joined(ax1, ax2)
assert not get_y_axis(ax2).joined(ax1, ax2)
assert not get_y_axis(ax3).joined(ax1, ax3)
assert not get_y_axis(ax3).joined(ax2, ax3)
@pytest.mark.slow
def test_axis_share_y_with_by(self, hist_df):
# GH 15079
ax1, ax2, ax3 = hist_df.plot.hist(column="A", by="C", sharey=True)
# share y
assert get_y_axis(ax1).joined(ax1, ax2)
assert get_y_axis(ax2).joined(ax1, ax2)
assert get_y_axis(ax3).joined(ax1, ax3)
assert get_y_axis(ax3).joined(ax2, ax3)
# don't share x
assert not get_x_axis(ax1).joined(ax1, ax2)
assert not get_x_axis(ax2).joined(ax1, ax2)
assert not get_x_axis(ax3).joined(ax1, ax3)
assert not get_x_axis(ax3).joined(ax2, ax3)
@pytest.mark.parametrize("figsize", [(12, 8), (20, 10)])
def test_figure_shape_hist_with_by(self, figsize, hist_df):
# GH 15079
axes = hist_df.plot.hist(column="A", by="C", figsize=figsize)
_check_axes_shape(axes, axes_num=3, figsize=figsize)
class TestBoxWithBy:
@pytest.mark.parametrize(
"by, column, titles, xticklabels",
[
("C", "A", ["A"], [["a", "b", "c"]]),
(
["C", "D"],
"A",
["A"],
[
[
"(a, a)",
"(b, b)",
"(c, c)",
]
],
),
("C", ["A", "B"], ["A", "B"], [["a", "b", "c"]] * 2),
(
["C", "D"],
["A", "B"],
["A", "B"],
[
[
"(a, a)",
"(b, b)",
"(c, c)",
]
]
* 2,
),
(["C"], None, ["A", "B"], [["a", "b", "c"]] * 2),
],
)
def test_box_plot_by_argument(self, by, column, titles, xticklabels, hist_df):
# GH 15079
axes = _check_plot_works(
hist_df.plot.box, default_axes=True, column=column, by=by
)
result_titles = [ax.get_title() for ax in axes]
result_xticklabels = [
[label.get_text() for label in ax.get_xticklabels()] for ax in axes
]
assert result_xticklabels == xticklabels
assert result_titles == titles
@pytest.mark.parametrize(
"by, column, titles, xticklabels",
[
(0, "A", ["A"], [["a", "b", "c"]]),
(
[0, "D"],
"A",
["A"],
[
[
"(a, a)",
"(b, b)",
"(c, c)",
]
],
),
(0, None, ["A", "B"], [["a", "b", "c"]] * 2),
],
)
def test_box_plot_by_0(self, by, column, titles, xticklabels, hist_df):
# GH 15079
df = hist_df.copy()
df = df.rename(columns={"C": 0})
axes = _check_plot_works(df.plot.box, default_axes=True, column=column, by=by)
result_titles = [ax.get_title() for ax in axes]
result_xticklabels = [
[label.get_text() for label in ax.get_xticklabels()] for ax in axes
]
assert result_xticklabels == xticklabels
assert result_titles == titles
@pytest.mark.parametrize(
"by, column",
[
([], ["A"]),
((), "A"),
([], None),
((), ["A", "B"]),
],
)
def test_box_plot_with_none_empty_list_by(self, by, column, hist_df):
# GH 15079
msg = "No group keys passed"
with pytest.raises(ValueError, match=msg):
_check_plot_works(hist_df.plot.box, default_axes=True, column=column, by=by)
@pytest.mark.slow
@pytest.mark.parametrize(
"by, column, layout, axes_num",
[
(["C"], "A", (1, 1), 1),
("C", "A", (1, 1), 1),
("C", None, (2, 1), 2),
("C", ["A", "B"], (1, 2), 2),
(["C", "D"], "A", (1, 1), 1),
(["C", "D"], None, (1, 2), 2),
],
)
def test_box_plot_layout_with_by(self, by, column, layout, axes_num, hist_df):
# GH 15079
axes = _check_plot_works(
hist_df.plot.box, default_axes=True, column=column, by=by, layout=layout
)
_check_axes_shape(axes, axes_num=axes_num, layout=layout)
@pytest.mark.parametrize(
"msg, by, layout",
[
("larger than required size", ["C", "D"], (1, 1)),
(re.escape("Layout must be a tuple of (rows, columns)"), "C", (1,)),
("At least one dimension of layout must be positive", "C", (-1, -1)),
],
)
def test_box_plot_invalid_layout_with_by_raises(self, msg, by, layout, hist_df):
# GH 15079, test if error is raised when invalid layout is given
with pytest.raises(ValueError, match=msg):
hist_df.plot.box(column=["A", "B"], by=by, layout=layout)
@pytest.mark.parametrize("figsize", [(12, 8), (20, 10)])
def test_figure_shape_hist_with_by(self, figsize, hist_df):
# GH 15079
axes = hist_df.plot.box(column="A", by="C", figsize=figsize)
_check_axes_shape(axes, axes_num=1, figsize=figsize)
|
