cartopy.feature.nightshade.Nightshade¶
- class cartopy.feature.nightshade.Nightshade(date=None, delta=0.1, refraction=- 0.83, color='k', alpha=0.5, **kwargs)[source]¶
- __init__(date=None, delta=0.1, refraction=- 0.83, color='k', alpha=0.5, **kwargs)[source]¶
Shade the darkside of the Earth, accounting for refraction.
- Parameters
date (datetime) – A UTC datetime object used to calculate the position of the sun. Default: datetime.datetime.utcnow()
delta (float) – Stepsize in degrees to determine the resolution of the night polygon feature (
npts = 180 / delta
).refraction (float) – The adjustment in degrees due to refraction, thickness of the solar disc, elevation etc…
Note
Matplotlib keyword arguments can be used when drawing the feature. This allows standard Matplotlib control over aspects such as ‘color’, ‘alpha’, etc.
Methods
__init__
([date, delta, refraction, color, alpha])Shade the darkside of the Earth, accounting for refraction.
geometries
()Return an iterator of (shapely) geometries for this feature.
intersecting_geometries
(extent)Return an iterator of shapely geometries that intersect with the given extent.
Attributes
crs
The cartopy CRS for the geometries in this feature.
kwargs
The read-only dictionary of keyword arguments that are used when creating the Matplotlib artists for this feature.