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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"

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<title>matplotlib.projections — Matplotlib 3.1.0 documentation</title>

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<div style="float: left; position: absolute; width: 496px; bottom: 0; padding-bottom: 24px">Version 3.1.0</div>

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<h1>Source code for matplotlib.projections</h1><div class="highlight"><pre>

from .. import axes, cbook

from .geo import AitoffAxes, HammerAxes, LambertAxes, MollweideAxes

from .polar import PolarAxes

<div class="viewcode-block" id="ProjectionRegistry"><a class="viewcode-back" href="../../api/projections_api.html#matplotlib.projections.ProjectionRegistry">[docs]</a>class ProjectionRegistry:

"""

Manages the set of projections available to the system.

"""

def __init__(self):

self._all_projection_types = {}

<div class="viewcode-block" id="ProjectionRegistry.register"><a class="viewcode-back" href="../../api/projections_api.html#matplotlib.projections.ProjectionRegistry.register">[docs]</a> def register(self, *projections):

"""

Register a new set of projections.

"""

for projection in projections:

name = projection.name

self._all_projection_types[name] = projection</div>

<div class="viewcode-block" id="ProjectionRegistry.get_projection_class"><a class="viewcode-back" href="../../api/projections_api.html#matplotlib.projections.ProjectionRegistry.get_projection_class">[docs]</a> def get_projection_class(self, name):

"""

Get a projection class from its *name*.

"""

return self._all_projection_types[name]</div>

<div class="viewcode-block" id="ProjectionRegistry.get_projection_names"><a class="viewcode-back" href="../../api/projections_api.html#matplotlib.projections.ProjectionRegistry.get_projection_names">[docs]</a> def get_projection_names(self):

"""

Get a list of the names of all projections currently registered.

"""

return sorted(self._all_projection_types)</div></div>

projection_registry = ProjectionRegistry()

projection_registry.register(

axes.Axes,

PolarAxes,

AitoffAxes,

HammerAxes,

LambertAxes,

MollweideAxes)

<div class="viewcode-block" id="register_projection"><a class="viewcode-back" href="../../api/projections_api.html#matplotlib.projections.register_projection">[docs]</a>def register_projection(cls):

projection_registry.register(cls)</div>

<div class="viewcode-block" id="get_projection_class"><a class="viewcode-back" href="../../api/projections_api.html#matplotlib.projections.get_projection_class">[docs]</a>def get_projection_class(projection=None):

"""

Get a projection class from its name.

If *projection* is None, a standard rectilinear projection is returned.

"""

if projection is None:

projection = 'rectilinear'

try:

return projection_registry.get_projection_class(projection)

except KeyError:

raise ValueError("Unknown projection %r" % projection)</div>

<div class="viewcode-block" id="process_projection_requirements"><a class="viewcode-back" href="../../api/projections_api.html#matplotlib.projections.process_projection_requirements">[docs]</a>@cbook.deprecated("3.1")

def process_projection_requirements(figure, *args, **kwargs):

return figure._process_projection_requirements(*args, **kwargs)</div>

<div class="viewcode-block" id="get_projection_names"><a class="viewcode-back" href="../../api/projections_api.html#matplotlib.projections.get_projection_names">[docs]</a>def get_projection_names():

"""

Get a list of acceptable projection names.

"""

return projection_registry.get_projection_names()</div>

</pre></div>

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Last updated on May 18, 2019.

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