bqplot.scales.Mercator

class bqplot.scales.Mercator(**kwargs)[source]

A geographical projection scale commonly used for world maps.

The Mercator projection is a cylindrical map projection which ensures that any course of constant bearing is a straight line.

scale_factor

float (default: 190) – Specifies the scale value for the projection

center

tuple (default: (0, 60)) – Specifies the longitude and latitude where the map is centered.

rotate

tuple (default: (0, 0)) – Degree of rotation in each axis.

rtype

(Number, Number) (class-level attribute) – This attribute should not be modifed. The range type of a geo scale is a tuple.

dtype

type (class-level attribute) – the associated data type / domain type

__init__(**kwargs)

Public constructor

Methods

__init__(**kwargs) Public constructor
add_traits(**traits) Dynamically add trait attributes to the Widget.
class_own_trait_events(name) Get a dict of all event handlers defined on this class, not a parent.
class_own_traits(**metadata) Get a dict of all the traitlets defined on this class, not a parent.
class_trait_names(**metadata) Get a list of all the names of this class’ traits.
class_traits(**metadata) Get a dict of all the traits of this class.
close() Close method.
close_all()
get_manager_state([widgets]) Returns the full state for a widget manager for embedding
get_state([key, drop_defaults]) Gets the widget state, or a piece of it.
get_view_spec()
handle_comm_opened(msg) Static method, called when a widget is constructed.
has_trait(name) Returns True if the object has a trait with the specified name.
hold_sync() Hold syncing any state until the outermost context manager exits
hold_trait_notifications() Context manager for bundling trait change notifications and cross validation.
notify_change(change) Called when a property has changed.
observe(handler[, names, type]) Setup a handler to be called when a trait changes.
on_displayed(callback[, remove]) (Un)Register a widget displayed callback.
on_msg(callback[, remove]) (Un)Register a custom msg receive callback.
on_trait_change([handler, name, remove]) DEPRECATED: Setup a handler to be called when a trait changes.
on_widget_constructed() Registers a callback to be called when a widget is constructed.
open() Open a comm to the frontend if one isn’t already open.
send(content[, buffers]) Sends a custom msg to the widget model in the front-end.
send_state([key]) Sends the widget state, or a piece of it, to the front-end, if it exists.
set_state(sync_data) Called when a state is received from the front-end.
set_trait(name, value) Forcibly sets trait attribute, including read-only attributes.
setup_instance(*args, **kwargs) This is called before self.__init__ is called.
trait_events([name]) Get a dict of all the event handlers of this class.
trait_metadata(traitname, key[, default]) Get metadata values for trait by key.
trait_names(**metadata) Get a list of all the names of this class’ traits.
traits(**metadata) Get a dict of all the traits of this class.
unobserve(handler[, names, type]) Remove a trait change handler.
unobserve_all([name]) Remove trait change handlers of any type for the specified name.

Attributes

allow_padding A boolean (True, False) trait.
center An instance of a Python tuple.
comm A trait whose value must be an instance of a specified class.
cross_validation_lock A contextmanager for running a block with our cross validation lock set to True.
domain_class A trait whose value must be a subclass of a specified class.
keys An instance of a Python list.
log A trait whose value must be an instance of a specified class.
model_id Gets the model id of this widget.
precedence
reverse A boolean (True, False) trait.
rotate An instance of a Python tuple.
rtype
scale_factor A float trait.
scale_types
widget_types
widgets