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from __future__ import annotations
import numpy as np
import pytest
from pytest import approx
from uhi.numpy_plottable import ensure_plottable_histogram
def test_from_numpy() -> None:
hist1 = ((1, 2, 3, 4, 1, 2), (0, 1, 2, 3))
h = ensure_plottable_histogram(hist1)
assert h.values() == approx(np.array(hist1[0]))
assert len(h.axes) == 1
assert len(h.axes[0]) == 3
assert h.axes[0][0] == (0, 1)
assert h.axes[0][1] == (1, 2)
assert h.axes[0][2] == (2, 3)
def test_from_numpy_2d() -> None:
np.random.seed(42)
x = np.random.normal(1, 2, 1000)
y = np.random.normal(-1, 1, 1000)
result = np.histogram2d(x, y)
h = ensure_plottable_histogram(result)
assert h.values() == approx(result[0])
assert len(h.axes) == 2
assert len(h.axes[0]) == 10
assert h.axes[0][0] == approx(result[1][0:2])
assert h.axes[0][1] == approx(result[1][1:3])
assert h.axes[1][0] == approx(result[2][0:2])
assert h.axes[1][1] == approx(result[2][1:3])
def test_from_numpy_dd() -> None:
np.random.seed(42)
x = np.random.normal(1, 2, 1000)
y = np.random.normal(-1, 1, 1000)
z = np.random.normal(3, 3, 1000)
result = np.histogramdd((x, y, z))
h = ensure_plottable_histogram(result)
assert h.values() == approx(result[0])
assert len(h.axes) == 3
assert len(h.axes[0]) == 10
assert h.axes[0][0] == approx(result[1][0][0:2])
assert h.axes[0][1] == approx(result[1][0][1:3])
assert h.axes[1][0] == approx(result[1][1][0:2])
assert h.axes[1][1] == approx(result[1][1][1:3])
assert h.axes[2][0] == approx(result[1][2][0:2])
assert h.axes[2][1] == approx(result[1][2][1:3])
def test_from_bh_regular() -> None:
bh = pytest.importorskip("boost_histogram")
h1 = bh.Histogram(bh.axis.Regular(5, 0, 5))
h1[...] = (3, 2, 1, 2, 3)
h = ensure_plottable_histogram(h1)
assert h is h1
assert h.values() == approx(np.array((3, 2, 1, 2, 3)))
assert len(h.axes) == 1
assert len(h.axes[0]) == 5
assert h.axes[0][0] == approx(np.array((0, 1)))
assert h.axes[0][1] == approx(np.array((1, 2)))
assert h.axes[0][2] == approx(np.array((2, 3)))
def test_from_bh_integer() -> None:
bh = pytest.importorskip("boost_histogram")
h1 = bh.Histogram(bh.axis.Integer(1, 6))
h1[...] = (3, 2, 1, 2, 3)
h = ensure_plottable_histogram(h1)
assert h is h1
assert h.values() == approx(np.array((3, 2, 1, 2, 3)))
assert len(h.axes) == 1
assert len(h.axes[0]) == 5
assert h.axes[0][0] == 1
assert h.axes[0][1] == 2
assert h.axes[0][2] == 3
def test_from_bh_str_cat() -> None:
bh = pytest.importorskip("boost_histogram")
h1 = bh.Histogram(bh.axis.StrCategory(["hi", "ho"]))
h1.fill(["hi", "hi", "hi", "ho"])
h = ensure_plottable_histogram(h1)
assert h is h1
assert h.values() == approx(np.array((3, 1)))
assert len(h.axes) == 1
assert len(h.axes[0]) == 2
assert h.axes[0][0] == "hi"
assert h.axes[0][1] == "ho"
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