def _validate(self, obj, fmt, **kwargs):
"""
Helper method to be used in the __call__ method to get a
suitable plot or widget object and the appropriate format.
"""
if isinstance(obj, Viewable):
return obj, 'html'
fig_formats = self.mode_formats['fig']
holomap_formats = self.mode_formats['holomap']
holomaps = obj.traverse(lambda x: x, [HoloMap])
dynamic = any(isinstance(m, DynamicMap) for m in holomaps)
if fmt in ['auto', None]:
if any(len(o) > 1 or (isinstance(o, DynamicMap) and unbound_dimensions(o.streams, o.kdims))
for o in holomaps):
fmt = holomap_formats[0] if self.holomap in ['auto', None] else self.holomap
else:
fmt = fig_formats[0] if self.fig == 'auto' else self.fig
if fmt in self.widgets:
plot = self.get_widget(obj, fmt)
fmt = 'html'
elif dynamic or (self._render_with_panel and fmt == 'html'):
plot, fmt = HoloViewsPane(obj, center=True, backend=self.backend, renderer=self), fmt
else:
plot = self.get_plot(obj, renderer=self, **kwargs)
all_formats = set(fig_formats + holomap_formats)
if fmt not in all_formats:
raise Exception("Format %r not supported by mode %r. Allowed formats: %r"
% (fmt, self.mode, fig_formats + holomap_formats))
self.last_plot = plot
return plot, fmt
def app(self_or_cls,
plot,
show=False,
new_window=False,
websocket_origin=None,
port=0):
"""
Creates a bokeh app from a HoloViews object or plot. By
default simply attaches the plot to bokeh's curdoc and returns
the Document, if show option is supplied creates an
Application instance and displays it either in a browser
window or inline if notebook extension has been loaded. Using
the new_window option the app may be displayed in a new
browser tab once the notebook extension has been loaded. A
websocket origin is required when launching from an existing
tornado server (such as the notebook) and it is not on the
default port ('localhost:8888').
"""
if isinstance(plot, HoloViewsPane):
pane = plot
else:
pane = HoloViewsPane(plot,
backend=self_or_cls.backend,
renderer=self_or_cls,
**self_or_cls._widget_kwargs())
if new_window:
return pane._get_server(port, websocket_origin, show=show)
else:
kwargs = {
'notebook_url': websocket_origin
} if websocket_origin else {}
return pane.app(port=port, **kwargs)
def server_doc(self_or_cls, obj, doc=None):
"""
Get a bokeh Document with the plot attached. May supply
an existing doc, otherwise bokeh.io.curdoc() is used to
attach the plot to the global document instance.
"""
if not isinstance(obj, HoloViewsPane):
obj = HoloViewsPane(obj, renderer=self_or_cls, backend=self_or_cls.backend,
**self_or_cls._widget_kwargs())
return obj.layout.server_doc(doc)
def get_widget(self_or_cls, plot, widget_type, **kwargs):
if widget_type == 'scrubber':
widget_location = self_or_cls.widget_location or 'bottom'
else:
widget_type = 'individual'
widget_location = self_or_cls.widget_location or 'right'
layout = HoloViewsPane(plot, widget_type=widget_type, center=True,
widget_location=widget_location, renderer=self_or_cls)
interval = int((1./self_or_cls.fps) * 1000)
for player in layout.layout.select(PlayerBase):
player.interval = interval
return layout