def set_jupyter_backend(backend: Optional[str] = None) -> bool:
"""
Configure the jupyter plotting backend for pyvista.
Parameters
----------
backend : str, optional
The pyvista plotting backend. For further details see
:func:`pyvista.set_jupyter_backend`. If ``None``, defaults to
:data:`JUPYTER_BACKEND`.
Returns
-------
bool
Whether the jupyter backend was successfully configured.
Notes
-----
.. versionadded:: 0.1.0
"""
result = False
if active_kernel():
try:
if backend is None:
backend = JUPYTER_BACKEND
pv.set_jupyter_backend(backend)
result = True
except ImportError:
logger.info("Unable to set the pyvista jupyter backend to '%s'", backend)
else:
logger.debug("No active IPython kernel available")
return result
def test_set_jupyter_backend_ipygany():
pv.set_jupyter_backend('static')
assert pv.rcParams['jupyter_backend'] == 'static'
pv.set_jupyter_backend(None)
def test_set_jupyter_backend_none(backend):
pv.set_jupyter_backend(backend)
assert pv.rcParams['jupyter_backend'] is None
def test_set_jupyter_backend_ipygany_fail():
with pytest.raises(ValueError, match='Invalid Jupyter notebook plotting backend'):
pv.set_jupyter_backend('not a backend')
def test_set_jupyter_backend_ipyvtklink():
pv.set_jupyter_backend('ipyvtklink')
assert pv.rcParams['jupyter_backend'] == 'ipyvtklink'
pv.set_jupyter_backend(None)
def test_set_jupyter_backend_panel():
pv.set_jupyter_backend('panel')
assert pv.global_theme.jupyter_backend == 'panel'
pv.set_jupyter_backend(None)
# -- pyvista configuration ---------------------------------------------------
import pyvista
import numpy as np
# Manage errors
pyvista.set_error_output_file("errors.txt")
# Ensure that offscreen rendering is used for docs generation
pyvista.OFF_SCREEN = True # Not necessary - simply an insurance policy
# Preferred plotting style for documentation
pyvista.set_plot_theme("document")
pyvista.global_theme.window_size = [1024, 768]
pyvista.global_theme.font.size = 22
pyvista.global_theme.font.label_size = 22
pyvista.global_theme.font.title_size = 22
pyvista.global_theme.return_cpos = False
pyvista.set_jupyter_backend(None)
# Save figures in specified directory
pyvista.FIGURE_PATH = os.path.join(os.path.abspath("./images/"), "auto-generated/")
if not os.path.exists(pyvista.FIGURE_PATH):
os.makedirs(pyvista.FIGURE_PATH)
# necessary when building the sphinx gallery
pyvista.BUILDING_GALLERY = True
# SG warnings
import warnings
warnings.filterwarnings(
"ignore",
category=UserWarning,
message="Matplotlib is currently using agg, which is a non-GUI backend, so cannot show the figure.",
def test_set_jupyter_backend_static():
pv.set_jupyter_backend('static')
assert pv.global_theme.jupyter_backend == 'static'
pv.set_jupyter_backend(None)
def test_set_jupyter_backend_none(backend):
pv.set_jupyter_backend(backend)
assert pv.global_theme.jupyter_backend is None
def test_set_jupyter_backend_ipygany():
pv.set_jupyter_backend('panel')
assert pv.rcParams['jupyter_backend'] == 'panel'
pv.set_jupyter_backend(None)
def test_set_jupyter_backend_ipyvtk_simple():
pv.set_jupyter_backend('ipyvtk_simple')
assert pv.rcParams['jupyter_backend'] == 'ipyvtk_simple'
pv.set_jupyter_backend('panel')