Source code for bokeh.models.map_plots
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# Copyright (c) 2012 - 2018, Anaconda, Inc. All rights reserved.
#
# Powered by the Bokeh Development Team.
#
# The full license is in the file LICENSE.txt, distributed with this software.
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''' Models for displaying maps in Bokeh plots.
'''
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# Boilerplate
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from __future__ import absolute_import, division, print_function, unicode_literals
import logging
log = logging.getLogger(__name__)
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# Imports
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# Standard library imports
# External imports
# Bokeh imports
from ..core.enums import MapType
from ..core.has_props import abstract
from ..core.properties import Bool, Enum, Float, Instance, Int, JSON, Override, String
from ..core.validation import error, warning
from ..core.validation.warnings import MISSING_RENDERERS
from ..core.validation.errors import INCOMPATIBLE_MAP_RANGE_TYPE, REQUIRED_RANGE, MISSING_GOOGLE_API_KEY
from ..model import Model
from ..models.ranges import Range1d
from .plots import Plot
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# Globals and constants
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__all__ = (
'GMapOptions',
'GMapPlot',
'MapOptions',
'MapPlot',
)
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# General API
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[docs]@abstract
class MapOptions(Model):
''' Abstract base class for map options' models.
'''
lat = Float(help="""
The latitude where the map should be centered.
""")
lng = Float(help="""
The longitude where the map should be centered.
""")
zoom = Int(12, help="""
The initial zoom level to use when displaying the map.
""")
[docs]@abstract
class MapPlot(Plot):
''' Abstract base class for map plot models.
'''
def __init__(self, *args, **kw):
from ..models.ranges import Range1d
for r in ('x_range', 'y_range'):
if r in kw and not isinstance(kw.get(r), Range1d):
raise ValueError('Invalid value for %r, MapPlot ranges may only be Range1d, not data ranges' % r)
super(MapPlot, self).__init__(*args, **kw)
@error(INCOMPATIBLE_MAP_RANGE_TYPE)
def _check_incompatible_map_range_type(self):
from ..models.ranges import Range1d
if self.x_range is not None and not isinstance(self.x_range, Range1d):
return "%s.x_range" % str(self)
if self.y_range is not None and not isinstance(self.y_range, Range1d):
return "%s.y_range" % str(self)
[docs]class GMapOptions(MapOptions):
''' Options for ``GMapPlot`` objects.
'''
map_type = Enum(MapType, default="roadmap", help="""
The `map type`_ to use for the ``GMapPlot``.
.. _map type: https://developers.google.com/maps/documentation/javascript/reference#MapTypeId
""")
scale_control = Bool(default=False, help="""
Whether the Google map should display its distance scale control.
""")
styles = JSON(help="""
A JSON array of `map styles`_ to use for the ``GMapPlot``. Many example styles can
`be found here`_.
.. _map styles: https://developers.google.com/maps/documentation/javascript/reference#MapTypeStyle
.. _be found here: https://snazzymaps.com
""")
tilt = Int(default=45, help="""
`Tilt`_ angle of the map. The only allowed values are 0 and 45.
Only has an effect on 'satellite' and 'hybrid' map types.
A value of 0 causes the map to always use a 0 degree overhead view.
A value of 45 causes the tilt angle to switch to 45 imagery if available.
.. _Tilt: https://developers.google.com/maps/documentation/javascript/reference/3/map#MapOptions.tilt
""")
[docs]class GMapPlot(MapPlot):
''' A Bokeh Plot with a `Google Map`_ displayed underneath.
Data placed on this plot should be specified in decimal lat/lon coordinates
e.g. ``(37.123, -122.404)``. It will be automatically converted into the
web mercator projection to display properly over google maps tiles.
Please also note that only ``Range1d`` ranges are supported by ``GMapPlot``.
.. _Google Map: https://www.google.com/maps/
'''
# TODO (bev) map plot might not have these
@error(REQUIRED_RANGE)
def _check_required_range(self):
pass
@warning(MISSING_RENDERERS)
def _check_missing_renderers(self):
pass
@error(MISSING_GOOGLE_API_KEY)
def _check_missing_google_api_key(self):
if self.api_key is None:
return str(self)
map_options = Instance(GMapOptions, help="""
Options for displaying the plot.
""")
border_fill_color = Override(default="#ffffff")
api_key = String(help="""
Google Maps API requires an API key. See https://developers.google.com/maps/documentation/javascript/get-api-key
for more information on how to obtain your own.
""")
x_range = Override(default=lambda: Range1d())
y_range = Override(default=lambda: Range1d())
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# Dev API
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# Private API
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# Code
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