Function test_facetgrid_single_contour

xarray/tests/test_plot.py:3264–3273

()

@requires_matplotlib
def test_facetgrid_single_contour() -> None:
    # regression test for GH3569
    x, y = np.meshgrid(np.arange(12), np.arange(12))
    z = xr.DataArray(np.hypot(x, y))
    z2 = xr.DataArray(np.hypot(x, y) + 1)
    ds = xr.concat([z, z2], dim="time")
    ds["time"] = [0, 1]

    with figure_context():
        ds.plot.contour(col="time", levels=[4], colors=["k"])


@requires_matplotlib