def freeze(self, toast: Toast) -> None:
"""Set the plotter to frozen, preventing new traces from being added."""
try:
return self.active_view.freeze(toast)
except NotImplementedError:
toast.show(f"{self._active} does not implement freeze",
ToastType.warning)
def rename_variable(self, toast: Toast, var_name: str,
display_name: str) -> None:
"""Update the legend label of the given variable.
If a dataframe name is specified, the legend labels of all the columns are changed
accordingly.
Parameters
----------
toast: Toast
The `Toast` class instance.
var_name: str
The name of the variable to change the label of, as it is defined in Python.
Can be a series or dataframe name.
display_name: str
The desired legend label.
"""
try:
return self.active_view.rename_variable(toast, var_name,
display_name)
except NotImplementedError:
toast.show(f"{self._active} does not implement variable renaming",
ToastType.warning)
def defrost(self, toast: Toast) -> None:
if self._frozen:
toast.show(
"Dtale is 'defrosted'. DFs defined while it was frozen will not be automatically picked up. Use --show "
" to get them added.",
ToastType.info,
)
self._frozen = False
def defrost(self, toast: Toast) -> None:
"""Set the plotter to un-frozen, allowing new traces to be plotted.
Note that traces defined while it was frozen will need to be added manually.
"""
try:
return self.active_view.defrost(toast)
except NotImplementedError:
toast.show(f"{self._active} does not implement defrost",
ToastType.warning)
def update_max_series_length(self, toast: Toast, sample: int) -> None:
"""Update the maximum series length of all traces.
If this has an effect on any of the traces, set `self._changed` to `True`.
Parameters
----------
max_length: int
The new maximum series length. If 0, the traces will not be downsampled.
"""
try:
return self.active_view.update_max_series_length(toast, sample)
except NotImplementedError:
toast.show(f"{self._active} does not implement max series length",
ToastType.warning)
def set_plot_width(self, toast: Toast, width: int) -> None:
"""Validate and set the width of the figure.
Parameters
----------
toast: Toast
The `Toast` class instance.
width: int
The desired width of the plot in inches. If outside the range `[_MIN_WIDTH,
_MAX_WIDTH]`, will be set to the nearest limit and the user will be notified.
"""
try:
return self.active_view.set_plot_width(toast, width)
except NotImplementedError:
toast.show(
f"{self._active} does not implement setting the plot height",
ToastType.warning)
def set_ylabel(self, toast: Toast, ylabel: str) -> None:
"""Set the y axis label.
If the new label is different, set `self._changed` to True.
Parameters
----------
toast: Toast
The `Toast` class instance.
ylabel: str
New label for the y axis. If it is an empty string, no label will be used.
"""
try:
return self.active_view.set_ylabel(toast, ylabel)
except NotImplementedError:
toast.show(f"{self._active} does not implement changing ylabel",
ToastType.warning)
def ignore_variable(self, toast: Toast, var_name: str) -> None:
"""Hide the given variable from the plot. Undoes `show_variable`.
If a dataframe name is specified, all of its columns will be hidden.
Parameters
----------
toast: Toast
The `Toast` class instance.
var_name: str
Name of the variable to hide, as it is defined in Python. Can be a series
names or dataframe name.
"""
try:
return self.active_view.ignore_variable(toast, var_name)
except NotImplementedError:
toast.show(f"{self._active} does not implement ignoring variables",
ToastType.warning)
def test_show_variable():
shell = MockIPythonShell({})
a = TestView()
b = TestView()
manager = ViewManager(AutoplotDisplay(), shell, {"a": a, "b": b}, "a")
manager.show_variable(Toast(Output()), "df")
assert manager._changed
assert a.showed == "df"
assert b.showed == ""
def test_rename_variable():
shell = MockIPythonShell({})
a = TestView()
b = TestView()
manager = ViewManager(AutoplotDisplay(), shell, {"a": a, "b": b}, "a")
manager.rename_variable(Toast(Output()), "df", "ddf")
assert manager._changed
assert a.rename == ("df", "ddf")
assert b.rename == ()
def test_defrost():
shell = MockIPythonShell({})
a = TestView()
b = TestView()
manager = ViewManager(AutoplotDisplay(), shell, {"a": a, "b": b}, "a")
manager.defrost(Toast(Output()))
assert manager._changed
assert a.defrosted
assert not b.defrosted
def test_max_series_length():
shell = MockIPythonShell({})
a = TestView()
b = TestView()
manager = ViewManager(AutoplotDisplay(), shell, {"a": a, "b": b}, "a")
manager.update_max_series_length(Toast(Output()), 20)
assert manager._changed
assert a.max_series_length == 20
assert b.max_series_length is None
def test_set_ylabel():
shell = MockIPythonShell({})
a = TestView()
b = TestView()
manager = ViewManager(AutoplotDisplay(), shell, {"a": a, "b": b}, "a")
manager.set_ylabel(Toast(Output()), "hello")
assert manager._changed
assert a.ylabel == "hello"
assert b.ylabel is None
def test_change_colour():
shell = MockIPythonShell({})
a = TestView()
b = TestView()
manager = ViewManager(AutoplotDisplay(), shell, {"a": a, "b": b}, "a")
manager.change_colour(Toast(Output()), "df", "red")
assert manager._changed
assert a.colour == ("df", "red")
assert b.colour == ()
def test_set_plot_width():
shell = MockIPythonShell({})
a = TestView()
b = TestView()
manager = ViewManager(AutoplotDisplay(), shell, {"a": a, "b": b}, "a")
manager.set_plot_width(Toast(Output()), 3)
assert manager._changed
assert a.plot_width == 3
assert b.plot_width is None
def change_colour(self, toast: Toast, var_name: str, colour: str) -> None:
"""Update the colour of the given variable.
Only series / column names can be specified, not dataframe names.
Parameters
----------
toast: Toast
The `Toast` class instance.
var_name: str
The name of the variable to change the colour of, as it is defined in Python.
colour: str
The desired trace colour. Must be a valid matplotlib colour.
"""
try:
return self.active_view.change_colour(toast, var_name, colour)
except NotImplementedError:
toast.show(f"{self._active} does not implement changing colours",
ToastType.warning)
def show_variable(self, toast: Toast, var_name: str) -> None:
"""Show the given variable on the plot. Undoes `ignore_variable`.
If a dataframe name is specified, all of its columns will be shown.
Parameters
----------
plotted_dfs: Dict[str, Set[str]]
Dictionary with key = dataframe name, value = set of plotted column names.
toast: Toast
The `Toast` class instance.
var_name: str
Name of the variable to show, as it is defined in Python. Can be a series
names or dataframe name.
"""
try:
return self.active_view.show_variable(toast, var_name)
except NotImplementedError:
toast.show(f"{self._active} does not implement showing variables",
ToastType.warning)
def load_ipython_extension(shell):
"""Load the IPython extension. Called by `%load_ext ...`.
This function initialises the widget output area, the autoplot display area defined
in `AutoplotDisplay` and the `Plotter` instance. It also attaches adds
the IPython event listeners defined in `CellEventHandler` and registers the magic
commands defined in `AutoplotMagic`.
Parameters
----------
shell: IPython.InteractiveShell
The active IPython shell.
"""
js_output = widgets.Output()
toast = Toast(js_output)
plotter_model = PlotterModel(Plotter(toast))
dtaler = DTaler()
view_manager = ViewManager(AutoplotDisplay(), shell, {
"graph": plotter_model,
"dtale": dtaler
}, "graph")
def _autoplot_post_run_cell(*args):
if args:
success = args[0].success
else:
# IPython 5.x didn't use to pass the result as a parameter of post_run_cell
success = IPython.get_ipython().last_execution_succeeded
if success:
view_manager.redraw()
# Unregister previous events registered with this class (eg.: when the plugin reloads)
for name, funcs in shell.events.callbacks.items():
for func in funcs:
if _autoplot_post_run_cell.__name__ == func.__name__:
shell.events.unregister(name, func)
shell.events.register("post_run_cell", _autoplot_post_run_cell)
apm = _make_magic(shell, toast, view_manager)
shell.register_magics(apm)
def freeze(self, toast: Toast) -> None:
if not self._frozen:
toast.show(
"Dtale is 'frozen'. New DFs will not be tracked, but tracked ones will still update.", ToastType.info
)
self._frozen = True
