def update(self, view=None):
"""
Redraw the layer
"""
if not self._visible:
return
self.clear()
if self._coordinator.remove_artists:
old = all_artists(self._axes.figure)
if isinstance(self._layer, Data):
a = self._coordinator.plot_data(layer=self._layer)
else:
a = self._coordinator.plot_subset(layer=self._layer, subset=self._layer)
# if user explicitly returns the newly-created artists,
# then use them. Otherwise, introspect to find the new artists
if a is None:
if self._coordinator.remove_artists:
self.artists = list(new_artists(self._axes.figure, old))
else:
self.artists = []
else:
self.artists = as_list(a)
for a in self.artists:
a.set_zorder(self.zorder)
def _call_udf(self, method_name, **kwargs):
"""
Call a user-defined function stored in the _custom_functions dict
Parameters
----------
method_name : str
The name of the user-defined method to setup a dispatch for
**kwargs : dict
Custom settings to pass to the UDF if they are requested by name
as input arguments
Returns
-------
The result of the UDF
Notes
-----
This function builds the necessary arguments to the
user-defined function. It also attempts to monitor
the state of the matplotlib plot, removing stale
artists and re-rendering the cavnas as needed.
"""
# get the custom function
try:
func = self._custom_functions[method_name]
except KeyError:
return []
# clear any MPL artists created on last call
if self.remove_artists:
layer = kwargs.get('layer', None)
key = (layer, method_name)
old = self._created_artists.get(key, set())
remove_artists(old)
current = all_artists(self.axes.figure)
# add some extra information that the user might want
kwargs.setdefault('_self', self)
kwargs.setdefault('axes', self.axes)
kwargs.setdefault('figure', self.axes.figure)
kwargs.setdefault('state', self.state)
# call method, keep track of newly-added artists
settings = SettingsOracle(self._settings, **kwargs)
result = introspect_and_call(func, settings)
if self.remove_artists:
new = new_artists(self.axes.figure, current)
self._created_artists[key] = new
if new:
self.axes.figure.canvas.draw()
else:
self.axes.figure.canvas.draw()
return result
def update(self, *args, **kwargs):
if not self._visible:
return
self.clear()
old = all_artists(self.axes.figure)
if isinstance(self.state.layer, Data):
a = self._coordinator.plot_data(layer=self.state.layer)
else:
a = self._coordinator.plot_subset(layer=self.state.layer, subset=self.state.layer)
# if user explicitly returns the newly-created artists,
# then use them. Otherwise, introspect to find the new artists
if a is None:
self.mpl_artists = list(new_artists(self.axes.figure, old))
else:
self.mpl_artists = as_list(a)
for a in self.mpl_artists:
a.set_zorder(self.state.zorder)
def update(self, *args, **kwargs):
if not self._visible:
return
self.clear()
old = all_artists(self.axes.figure)
if isinstance(self.state.layer, BaseData):
a = self._coordinator.plot_data(layer=self.state.layer)
else:
a = self._coordinator.plot_subset(layer=self.state.layer,
subset=self.state.layer)
# if user explicitly returns the newly-created artists,
# then use them. Otherwise, introspect to find the new artists
if a is None:
self.mpl_artists = list(new_artists(self.axes.figure, old))
else:
self.mpl_artists = as_list(a)
for a in self.mpl_artists:
a.set_zorder(self.state.zorder)
