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overlay.py
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overlay.py
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from geopandas import GeoDataFrame, GeoSeries, read_file, datasets, overlay
import numpy as np
from shapely.geometry import Point, Polygon
class Countries:
param_names = ['how']
params = [('intersection', 'union', 'identity', 'symmetric_difference',
'difference')]
def setup(self, *args):
world = read_file(datasets.get_path('naturalearth_lowres'))
capitals = read_file(datasets.get_path('naturalearth_cities'))
countries = world[['geometry', 'name']]
countries = countries.to_crs('+init=epsg:3395')[
countries.name != "Antarctica"]
capitals = capitals.to_crs('+init=epsg:3395')
capitals['geometry'] = capitals.buffer(500000)
self.countries = countries
self.capitals = capitals
def time_overlay(self, how):
overlay(self.countries, self.capitals, how=how)
class Small:
param_names = ['how']
params = [('intersection', 'union', 'identity', 'symmetric_difference',
'difference')]
def setup(self, *args):
polys1 = GeoSeries([Polygon([(0, 0), (2, 0), (2, 2), (0, 2)]),
Polygon([(2, 2), (4, 2), (4, 4), (2, 4)])])
polys2 = GeoSeries([Polygon([(1, 1), (3, 1), (3, 3), (1, 3)]),
Polygon([(3, 3), (5, 3), (5, 5), (3, 5)])])
df1 = GeoDataFrame({'geometry': polys1, 'df1': [1, 2]})
df2 = GeoDataFrame({'geometry': polys2, 'df2': [1, 2]})
self.df1, self.df2 = df1, df2
def time_overlay(self, how):
overlay(self.df1, self.df2, how=how)
class ManyPoints:
param_names = ['how']
params = [('intersection', 'union', 'identity', 'symmetric_difference',
'difference')]
def setup(self, *args):
points = GeoDataFrame(geometry=[Point(i, i) for i in range(1000)])
base = np.array([[0, 0], [0, 100], [100, 100], [100, 0]])
polys = GeoDataFrame(
geometry=[Polygon(base + i * 100) for i in range(10)])
self.df1, self.df2 = points, polys
def time_overlay(self, how):
overlay(self.df1, self.df2, how=how)