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import numpy as np
import matplotlib as mpl
from matplotlib.colors import same_color, to_rgba
from numpy.testing import assert_array_equal, assert_array_almost_equal
from seaborn._core.plot import Plot
from seaborn._core.moves import Dodge
from seaborn._marks.line import Dash, Line, Path, Lines, Paths, Range
class TestPath:
def test_xy_data(self):
x = [1, 5, 3, np.nan, 2]
y = [1, 4, 2, 5, 3]
g = [1, 2, 1, 1, 2]
p = Plot(x=x, y=y, group=g).add(Path()).plot()
line1, line2 = p._figure.axes[0].get_lines()
assert_array_equal(line1.get_xdata(), [1, 3, np.nan])
assert_array_equal(line1.get_ydata(), [1, 2, np.nan])
assert_array_equal(line2.get_xdata(), [5, 2])
assert_array_equal(line2.get_ydata(), [4, 3])
def test_shared_colors_direct(self):
x = y = [1, 2, 3]
color = ".44"
m = Path(color=color)
p = Plot(x=x, y=y).add(m).plot()
line, = p._figure.axes[0].get_lines()
assert same_color(line.get_color(), color)
assert same_color(line.get_markeredgecolor(), color)
assert same_color(line.get_markerfacecolor(), color)
def test_separate_colors_direct(self):
x = y = [1, 2, 3]
y = [1, 2, 3]
m = Path(color=".22", edgecolor=".55", fillcolor=".77")
p = Plot(x=x, y=y).add(m).plot()
line, = p._figure.axes[0].get_lines()
assert same_color(line.get_color(), m.color)
assert same_color(line.get_markeredgecolor(), m.edgecolor)
assert same_color(line.get_markerfacecolor(), m.fillcolor)
def test_shared_colors_mapped(self):
x = y = [1, 2, 3, 4]
c = ["a", "a", "b", "b"]
m = Path()
p = Plot(x=x, y=y, color=c).add(m).plot()
ax = p._figure.axes[0]
colors = p._theme["axes.prop_cycle"].by_key()["color"]
for i, line in enumerate(ax.get_lines()):
assert same_color(line.get_color(), colors[i])
assert same_color(line.get_markeredgecolor(), colors[i])
assert same_color(line.get_markerfacecolor(), colors[i])
def test_separate_colors_mapped(self):
x = y = [1, 2, 3, 4]
c = ["a", "a", "b", "b"]
d = ["x", "y", "x", "y"]
m = Path()
p = Plot(x=x, y=y, color=c, fillcolor=d).add(m).plot()
ax = p._figure.axes[0]
colors = p._theme["axes.prop_cycle"].by_key()["color"]
for i, line in enumerate(ax.get_lines()):
assert same_color(line.get_color(), colors[i // 2])
assert same_color(line.get_markeredgecolor(), colors[i // 2])
assert same_color(line.get_markerfacecolor(), colors[i % 2])
def test_color_with_alpha(self):
x = y = [1, 2, 3]
m = Path(color=(.4, .9, .2, .5), fillcolor=(.2, .2, .3, .9))
p = Plot(x=x, y=y).add(m).plot()
line, = p._figure.axes[0].get_lines()
assert same_color(line.get_color(), m.color)
assert same_color(line.get_markeredgecolor(), m.color)
assert same_color(line.get_markerfacecolor(), m.fillcolor)
def test_color_and_alpha(self):
x = y = [1, 2, 3]
m = Path(color=(.4, .9, .2), fillcolor=(.2, .2, .3), alpha=.5)
p = Plot(x=x, y=y).add(m).plot()
line, = p._figure.axes[0].get_lines()
assert same_color(line.get_color(), to_rgba(m.color, m.alpha))
assert same_color(line.get_markeredgecolor(), to_rgba(m.color, m.alpha))
assert same_color(line.get_markerfacecolor(), to_rgba(m.fillcolor, m.alpha))
def test_other_props_direct(self):
x = y = [1, 2, 3]
m = Path(marker="s", linestyle="--", linewidth=3, pointsize=10, edgewidth=1)
p = Plot(x=x, y=y).add(m).plot()
line, = p._figure.axes[0].get_lines()
assert line.get_marker() == m.marker
assert line.get_linestyle() == m.linestyle
assert line.get_linewidth() == m.linewidth
assert line.get_markersize() == m.pointsize
assert line.get_markeredgewidth() == m.edgewidth
def test_other_props_mapped(self):
x = y = [1, 2, 3, 4]
g = ["a", "a", "b", "b"]
m = Path()
p = Plot(x=x, y=y, marker=g, linestyle=g, pointsize=g).add(m).plot()
line1, line2 = p._figure.axes[0].get_lines()
assert line1.get_marker() != line2.get_marker()
# Matplotlib bug in storing linestyle from dash pattern
# assert line1.get_linestyle() != line2.get_linestyle()
assert line1.get_markersize() != line2.get_markersize()
def test_capstyle(self):
x = y = [1, 2]
rc = {"lines.solid_capstyle": "projecting", "lines.dash_capstyle": "round"}
p = Plot(x, y).add(Path()).theme(rc).plot()
line, = p._figure.axes[0].get_lines()
assert line.get_dash_capstyle() == "projecting"
p = Plot(x, y).add(Path(linestyle="--")).theme(rc).plot()
line, = p._figure.axes[0].get_lines()
assert line.get_dash_capstyle() == "round"
p = Plot(x, y).add(Path({"solid_capstyle": "butt"})).theme(rc).plot()
line, = p._figure.axes[0].get_lines()
assert line.get_solid_capstyle() == "butt"
class TestLine:
# Most behaviors shared with Path and covered by above tests
def test_xy_data(self):
x = [1, 5, 3, np.nan, 2]
y = [1, 4, 2, 5, 3]
g = [1, 2, 1, 1, 2]
p = Plot(x=x, y=y, group=g).add(Line()).plot()
line1, line2 = p._figure.axes[0].get_lines()
assert_array_equal(line1.get_xdata(), [1, 3])
assert_array_equal(line1.get_ydata(), [1, 2])
assert_array_equal(line2.get_xdata(), [2, 5])
assert_array_equal(line2.get_ydata(), [3, 4])
class TestPaths:
def test_xy_data(self):
x = [1, 5, 3, np.nan, 2]
y = [1, 4, 2, 5, 3]
g = [1, 2, 1, 1, 2]
p = Plot(x=x, y=y, group=g).add(Paths()).plot()
lines, = p._figure.axes[0].collections
verts = lines.get_paths()[0].vertices.T
assert_array_equal(verts[0], [1, 3, np.nan])
assert_array_equal(verts[1], [1, 2, np.nan])
verts = lines.get_paths()[1].vertices.T
assert_array_equal(verts[0], [5, 2])
assert_array_equal(verts[1], [4, 3])
def test_set_properties(self):
x = y = [1, 2, 3]
m = Paths(color=".737", linewidth=1, linestyle=(3, 1))
p = Plot(x=x, y=y).add(m).plot()
lines, = p._figure.axes[0].collections
assert same_color(lines.get_color().squeeze(), m.color)
assert lines.get_linewidth().item() == m.linewidth
assert lines.get_linestyle()[0] == (0, list(m.linestyle))
def test_mapped_properties(self):
x = y = [1, 2, 3, 4]
g = ["a", "a", "b", "b"]
p = Plot(x=x, y=y, color=g, linewidth=g, linestyle=g).add(Paths()).plot()
lines, = p._figure.axes[0].collections
assert not np.array_equal(lines.get_colors()[0], lines.get_colors()[1])
assert lines.get_linewidths()[0] != lines.get_linewidth()[1]
assert lines.get_linestyle()[0] != lines.get_linestyle()[1]
def test_color_with_alpha(self):
x = y = [1, 2, 3]
m = Paths(color=(.2, .6, .9, .5))
p = Plot(x=x, y=y).add(m).plot()
lines, = p._figure.axes[0].collections
assert same_color(lines.get_colors().squeeze(), m.color)
def test_color_and_alpha(self):
x = y = [1, 2, 3]
m = Paths(color=(.2, .6, .9), alpha=.5)
p = Plot(x=x, y=y).add(m).plot()
lines, = p._figure.axes[0].collections
assert same_color(lines.get_colors().squeeze(), to_rgba(m.color, m.alpha))
def test_capstyle(self):
x = y = [1, 2]
rc = {"lines.solid_capstyle": "projecting"}
with mpl.rc_context(rc):
p = Plot(x, y).add(Paths()).plot()
lines = p._figure.axes[0].collections[0]
assert lines.get_capstyle() == "projecting"
p = Plot(x, y).add(Paths(linestyle="--")).plot()
lines = p._figure.axes[0].collections[0]
assert lines.get_capstyle() == "projecting"
p = Plot(x, y).add(Paths({"capstyle": "butt"})).plot()
lines = p._figure.axes[0].collections[0]
assert lines.get_capstyle() == "butt"
class TestLines:
def test_xy_data(self):
x = [1, 5, 3, np.nan, 2]
y = [1, 4, 2, 5, 3]
g = [1, 2, 1, 1, 2]
p = Plot(x=x, y=y, group=g).add(Lines()).plot()
lines, = p._figure.axes[0].collections
verts = lines.get_paths()[0].vertices.T
assert_array_equal(verts[0], [1, 3])
assert_array_equal(verts[1], [1, 2])
verts = lines.get_paths()[1].vertices.T
assert_array_equal(verts[0], [2, 5])
assert_array_equal(verts[1], [3, 4])
def test_single_orient_value(self):
x = [1, 1, 1]
y = [1, 2, 3]
p = Plot(x, y).add(Lines()).plot()
lines, = p._figure.axes[0].collections
verts = lines.get_paths()[0].vertices.T
assert_array_equal(verts[0], x)
assert_array_equal(verts[1], y)
class TestRange:
def test_xy_data(self):
x = [1, 2]
ymin = [1, 4]
ymax = [2, 3]
p = Plot(x=x, ymin=ymin, ymax=ymax).add(Range()).plot()
lines, = p._figure.axes[0].collections
for i, path in enumerate(lines.get_paths()):
verts = path.vertices.T
assert_array_equal(verts[0], [x[i], x[i]])
assert_array_equal(verts[1], [ymin[i], ymax[i]])
def test_auto_range(self):
x = [1, 1, 2, 2, 2]
y = [1, 2, 3, 4, 5]
p = Plot(x=x, y=y).add(Range()).plot()
lines, = p._figure.axes[0].collections
paths = lines.get_paths()
assert_array_equal(paths[0].vertices, [(1, 1), (1, 2)])
assert_array_equal(paths[1].vertices, [(2, 3), (2, 5)])
def test_mapped_color(self):
x = [1, 2, 1, 2]
ymin = [1, 4, 3, 2]
ymax = [2, 3, 1, 4]
group = ["a", "a", "b", "b"]
p = Plot(x=x, ymin=ymin, ymax=ymax, color=group).add(Range()).plot()
lines, = p._figure.axes[0].collections
colors = p._theme["axes.prop_cycle"].by_key()["color"]
for i, path in enumerate(lines.get_paths()):
verts = path.vertices.T
assert_array_equal(verts[0], [x[i], x[i]])
assert_array_equal(verts[1], [ymin[i], ymax[i]])
assert same_color(lines.get_colors()[i], colors[i // 2])
def test_direct_properties(self):
x = [1, 2]
ymin = [1, 4]
ymax = [2, 3]
m = Range(color=".654", linewidth=4)
p = Plot(x=x, ymin=ymin, ymax=ymax).add(m).plot()
lines, = p._figure.axes[0].collections
for i, path in enumerate(lines.get_paths()):
assert same_color(lines.get_colors()[i], m.color)
assert lines.get_linewidths()[i] == m.linewidth
class TestDash:
def test_xy_data(self):
x = [0, 0, 1, 2]
y = [1, 2, 3, 4]
p = Plot(x=x, y=y).add(Dash()).plot()
lines, = p._figure.axes[0].collections
for i, path in enumerate(lines.get_paths()):
verts = path.vertices.T
assert_array_almost_equal(verts[0], [x[i] - .4, x[i] + .4])
assert_array_equal(verts[1], [y[i], y[i]])
def test_xy_data_grouped(self):
x = [0, 0, 1, 2]
y = [1, 2, 3, 4]
color = ["a", "b", "a", "b"]
p = Plot(x=x, y=y, color=color).add(Dash()).plot()
lines, = p._figure.axes[0].collections
idx = [0, 2, 1, 3]
for i, path in zip(idx, lines.get_paths()):
verts = path.vertices.T
assert_array_almost_equal(verts[0], [x[i] - .4, x[i] + .4])
assert_array_equal(verts[1], [y[i], y[i]])
def test_set_properties(self):
x = [0, 0, 1, 2]
y = [1, 2, 3, 4]
m = Dash(color=".8", linewidth=4)
p = Plot(x=x, y=y).add(m).plot()
lines, = p._figure.axes[0].collections
for color in lines.get_color():
assert same_color(color, m.color)
for linewidth in lines.get_linewidth():
assert linewidth == m.linewidth
def test_mapped_properties(self):
x = [0, 1]
y = [1, 2]
color = ["a", "b"]
linewidth = [1, 2]
p = Plot(x=x, y=y, color=color, linewidth=linewidth).add(Dash()).plot()
lines, = p._figure.axes[0].collections
palette = p._theme["axes.prop_cycle"].by_key()["color"]
for color, line_color in zip(palette, lines.get_color()):
assert same_color(color, line_color)
linewidths = lines.get_linewidths()
assert linewidths[1] > linewidths[0]
def test_width(self):
x = [0, 0, 1, 2]
y = [1, 2, 3, 4]
p = Plot(x=x, y=y).add(Dash(width=.4)).plot()
lines, = p._figure.axes[0].collections
for i, path in enumerate(lines.get_paths()):
verts = path.vertices.T
assert_array_almost_equal(verts[0], [x[i] - .2, x[i] + .2])
assert_array_equal(verts[1], [y[i], y[i]])
def test_dodge(self):
x = [0, 1]
y = [1, 2]
group = ["a", "b"]
p = Plot(x=x, y=y, group=group).add(Dash(), Dodge()).plot()
lines, = p._figure.axes[0].collections
paths = lines.get_paths()
v0 = paths[0].vertices.T
assert_array_almost_equal(v0[0], [-.4, 0])
assert_array_equal(v0[1], [y[0], y[0]])
v1 = paths[1].vertices.T
assert_array_almost_equal(v1[0], [1, 1.4])
assert_array_equal(v1[1], [y[1], y[1]])
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