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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 (
| TestPlotBase,
| _check_plot_works,
| )
|
|
| @pytest.fixture
| def hist_df():
| np.random.seed(0)
| df = DataFrame(np.random.randn(30, 2), columns=["A", "B"])
| df["C"] = np.random.choice(["a", "b", "c"], 30)
| df["D"] = np.random.choice(["a", "b", "c"], 30)
| return df
|
|
| @td.skip_if_no_mpl
| class TestHistWithBy(TestPlotBase):
| @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)",
| "(a, b)",
| "(a, c)",
| "(b, a)",
| "(b, b)",
| "(b, c)",
| "(c, a)",
| "(c, b)",
| "(c, c)",
| ],
| [["A"]] * 9,
| ),
| (
| ["C", "D"],
| ["A", "B"],
| [
| "(a, a)",
| "(a, b)",
| "(a, c)",
| "(b, a)",
| "(b, b)",
| "(b, c)",
| "(c, a)",
| "(c, b)",
| "(c, c)",
| ],
| [["A", "B"]] * 9,
| ),
| (
| ["C", "D"],
| None,
| [
| "(a, a)",
| "(a, b)",
| "(a, c)",
| "(b, a)",
| "(b, b)",
| "(b, c)",
| "(c, a)",
| "(c, b)",
| "(c, c)",
| ],
| [["A", "B"]] * 9,
| ),
| ],
| )
| 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)",
| "(a, b)",
| "(a, c)",
| "(b, a)",
| "(b, b)",
| "(b, c)",
| "(c, a)",
| "(c, b)",
| "(c, c)",
| ],
| [["A"]] * 9,
| ),
| ],
| )
| 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), 9),
| (["C", "D"], "A", (3, 3), 9),
| (["C", "D"], ["A"], (5, 2), 9),
| (["C", "D"], ["A", "B"], (9, 1), 9),
| (["C", "D"], None, (9, 1), 9),
| (["C", "D"], ["A", "B"], (5, 2), 9),
| ],
| )
| 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
| )
| self._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 self.get_x_axis(ax1).joined(ax1, ax2)
| assert self.get_x_axis(ax2).joined(ax1, ax2)
| assert self.get_x_axis(ax3).joined(ax1, ax3)
| assert self.get_x_axis(ax3).joined(ax2, ax3)
|
| # don't share y
| assert not self.get_y_axis(ax1).joined(ax1, ax2)
| assert not self.get_y_axis(ax2).joined(ax1, ax2)
| assert not self.get_y_axis(ax3).joined(ax1, ax3)
| assert not self.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 self.get_y_axis(ax1).joined(ax1, ax2)
| assert self.get_y_axis(ax2).joined(ax1, ax2)
| assert self.get_y_axis(ax3).joined(ax1, ax3)
| assert self.get_y_axis(ax3).joined(ax2, ax3)
|
| # don't share x
| assert not self.get_x_axis(ax1).joined(ax1, ax2)
| assert not self.get_x_axis(ax2).joined(ax1, ax2)
| assert not self.get_x_axis(ax3).joined(ax1, ax3)
| assert not self.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)
| self._check_axes_shape(axes, axes_num=3, figsize=figsize)
|
|
| @td.skip_if_no_mpl
| class TestBoxWithBy(TestPlotBase):
| @pytest.mark.parametrize(
| "by, column, titles, xticklabels",
| [
| ("C", "A", ["A"], [["a", "b", "c"]]),
| (
| ["C", "D"],
| "A",
| ["A"],
| [
| [
| "(a, a)",
| "(a, b)",
| "(a, c)",
| "(b, a)",
| "(b, b)",
| "(b, c)",
| "(c, a)",
| "(c, b)",
| "(c, c)",
| ]
| ],
| ),
| ("C", ["A", "B"], ["A", "B"], [["a", "b", "c"]] * 2),
| (
| ["C", "D"],
| ["A", "B"],
| ["A", "B"],
| [
| [
| "(a, a)",
| "(a, b)",
| "(a, c)",
| "(b, a)",
| "(b, b)",
| "(b, c)",
| "(c, a)",
| "(c, 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)",
| "(a, b)",
| "(a, c)",
| "(b, a)",
| "(b, b)",
| "(b, c)",
| "(c, a)",
| "(c, 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
| )
| self._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)
| self._check_axes_shape(axes, axes_num=1, figsize=figsize)
|
|
