mirror of
https://github.com/marceloprates/prettymaps.git
synced 2025-08-28 08:39:57 +02:00
Updated draw.py and fetch.py for flexibility
This commit is contained in:
Marcelo Prates
185
code/draw.py
185
code/draw.py
@@ -1,185 +0,0 @@
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# OpenStreetMap Networkx library to download data from OpenStretMap
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import osmnx as ox
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# Matplotlib-related stuff, for drawing
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from matplotlib.path import Path
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from matplotlib import pyplot as plt
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import matplotlib.patches as patches
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from matplotlib.patches import PathPatch
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# CV2 & Scipy & Numpy & Pandas
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import numpy as np
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from numpy.random import choice
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# Shapely
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from shapely.geometry import *
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from shapely.affinity import *
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# Geopandas
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from geopandas import GeoDataFrame
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# etc
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import pandas as pd
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from functools import reduce
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from tabulate import tabulate
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from IPython.display import Markdown, display
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from collections.abc import Iterable
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# Fetch
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from fetch import *
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# Drawing functions
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def show_palette(palette, description = ''):
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'''
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Helper to display palette in Markdown
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'''
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colorboxes = [
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f''
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for c in palette
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]
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display(Markdown((description)))
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display(Markdown(tabulate(pd.DataFrame(colorboxes), showindex = False)))
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def get_patch(shape, **kwargs):
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'''
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Convert shapely object to matplotlib patch
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'''
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if type(shape) == Path:
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return patches.PathPatch(shape, **kwargs)
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elif type(shape) == Polygon and shape.area > 0:
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return patches.Polygon(list(zip(*shape.exterior.xy)), **kwargs)
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else:
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return None
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def plot_shape(shape, ax, **kwargs):
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'''
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Plot shapely object
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'''
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if isinstance(shape, Iterable):
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for shape_ in shape:
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plot_shape(shape_, ax, **kwargs)
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else:
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ax.add_patch(get_patch(shape, **kwargs))
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def plot_shapes(shapes, ax, palette = None, **kwargs):
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'''
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Plot collection of shapely objects (optionally, use a color palette)
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'''
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if not isinstance(shapes, Iterable):
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shapes = [shapes]
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for shape in shapes:
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if palette is None:
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plot_shape(shape, ax, **kwargs)
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else:
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plot_shape(shape, ax, fc = choice(palette), **kwargs)
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def plot_streets(streets, ax, color = '#f5da9f', background_color = 'white', **kwargs):
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'''
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Plot shapely Polygon (or MultiPolygon) representing streets using matplotlib PathPatches
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'''
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for s in streets if isinstance(streets, Iterable) else [streets]:
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if s is not None:
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ax.add_patch(get_patch(pathify(s), facecolor = color, edgecolor = 'black', **kwargs))
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def plot(
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# Address
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query,
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# Figure parameters
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figsize = (10, 10),
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ax = None,
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title = None,
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# Whether to plot a circle centered around the address; circle params
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circle = False,
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radius = 1000,
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streets_radius = 1000,
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# Street params
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dilate_streets = 5,
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draw_streets = True,
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# Color params
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background_color = 'white',
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background_alpha = 1.,
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palette = None,
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perimeter_lw = 1,
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perimeter_ec = 'black',
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water_ec = 'black',
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land_ec = 'black',
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buildings_ec = 'black',
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# Which layers to plot
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layers = ['perimeter', 'landuse', 'water', 'building', 'streets'],
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# Layer ordering params
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zorder_perimeter = None,
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zorder_landuse = None,
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zorder_water = None,
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zorder_streets = None,
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zorder_building = None,
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# Whether to fetch data using OSM Id
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by_osmid = False,
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by_coordinates = False,
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):
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#############
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### Fetch ###
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#############
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# Geocode central point
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if by_coordinates:
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point = (float(query.split(",")[0].strip()), float(query.split(",")[1].strip()))
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elif not by_osmid:
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point = ox.geocode(query)
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# Fetch perimeter
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perimeter = get_perimeter(query, by_osmid = by_osmid) if not circle else None
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# Fetch buildings, land, water, streets
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layers_dict = {}
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for layer in layers:
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if layer == 'perimeter':
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pass
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elif layer == 'streets':
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layers_dict[layer], _ = get_streets(
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**({'point': point, 'radius': streets_radius} if circle else {'perimeter': perimeter}),
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dilate = dilate_streets
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)
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else:
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layers_dict[layer], perimeter_ = get_footprints(
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**({'point': point, 'radius': radius} if circle else {'perimeter': perimeter}),
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footprint = layer
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)
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# Project perimeter
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if 'perimeter' in layers:
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layers_dict['perimeter'] = perimeter_ if circle else union(ox.project_gdf(perimeter).geometry)
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############
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### Plot ###
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############
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if ax is None:
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# if ax is none, create figure
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fig, ax = plt.subplots(figsize = figsize)
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# Ajust axis
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ax.axis('off')
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ax.axis('equal')
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ax.autoscale()
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# Setup parameters for drawing layers
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layer_kwargs = {
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'perimeter': {'lw': perimeter_lw, 'ec': perimeter_ec, 'fc': background_color, 'alpha': background_alpha, 'zorder': zorder_perimeter},
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'landuse': {'ec': land_ec, 'fc': '#53bd53', 'zorder': zorder_landuse},
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'water': {'ec': water_ec, 'fc': '#a1e3ff', 'zorder': zorder_water},
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'streets': {'fc': '#f5da9f', 'zorder': zorder_streets},
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'building': {'ec': buildings_ec, 'palette': palette, 'zorder': zorder_building},
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}
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# Draw layers
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for layer in ['perimeter', 'landuse', 'water', 'streets', 'building']:
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if layer in layers_dict:
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plot_shapes(layers_dict[layer], ax, **layer_kwargs[layer])
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# Return perimeter
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return layers_dict['perimeter']
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106
code/fetch.py
106
code/fetch.py
@@ -1,106 +0,0 @@
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# OpenStreetMap Networkx library to download data from OpenStretMap
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import osmnx as ox
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# CV2 & Scipy & Numpy & Pandas
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import numpy as np
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# Shapely
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from shapely.geometry import *
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from shapely.affinity import *
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# Geopandas
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from geopandas import GeoDataFrame
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# Matplotlib
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from matplotlib.path import Path
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# etc
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from collections.abc import Iterable
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from functools import reduce
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# Helper functions to fetch data from OSM
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def ring_coding(ob):
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codes = np.ones(len(ob.coords), dtype = Path.code_type) * Path.LINETO
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codes[0] = Path.MOVETO
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return codes
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def pathify(polygon):
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vertices = np.concatenate([np.asarray(polygon.exterior)] + [np.asarray(r) for r in polygon.interiors])
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codes = np.concatenate([ring_coding(polygon.exterior)] + [ring_coding(r) for r in polygon.interiors])
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return Path(vertices, codes)
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def union(geometry):
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geometry = np.concatenate([[x] if type(x) == Polygon else x for x in geometry if type(x) in [Polygon, MultiPolygon]])
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geometry = reduce(lambda x, y: x.union(y), geometry[1:], geometry[0])
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return geometry
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def get_perimeter(query, by_osmid = False):
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return ox.geocode_to_gdf(query, by_osmid = by_osmid)
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def get_footprints(perimeter = None, point = None, radius = None, footprint = 'building'):
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if perimeter is not None:
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# Boundary defined by polygon (perimeter)
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footprints = ox.geometries_from_polygon(union(perimeter.geometry), tags = {footprint: True} if type(footprint) == str else footprint)
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perimeter = union(ox.project_gdf(perimeter).geometry)
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elif (point is not None) and (radius is not None):
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# Boundary defined by circle with radius 'radius' around point
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footprints = ox.geometries_from_point(point, dist = radius, tags = {footprint: True} if type(footprint) == str else footprint)
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perimeter = GeoDataFrame(geometry=[Point(point[::-1])], crs = footprints.crs)
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perimeter = ox.project_gdf(perimeter).geometry[0].buffer(radius)
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if len(footprints) > 0:
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footprints = ox.project_gdf(footprints)
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footprints = [
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[x] if type(x) == Polygon else x
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for x in footprints.geometry if type(x) in [Polygon, MultiPolygon]
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]
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footprints = list(np.concatenate(footprints)) if len(footprints) > 0 else []
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footprints = [pathify(x) for x in footprints if x.within(perimeter)]
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return footprints, perimeter
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def get_streets(perimeter = None, point = None, radius = None, dilate = 6, custom_filter = None):
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if perimeter is not None:
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# Boundary defined by polygon (perimeter)
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streets = ox.graph_from_polygon(union(perimeter.geometry), custom_filter = custom_filter)
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streets = ox.project_graph(streets)
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streets = ox.graph_to_gdfs(streets, nodes = False)
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#streets = ox.project_gdf(streets)
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streets = MultiLineString(list(streets.geometry)).buffer(dilate)
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elif (point is not None) and (radius is not None):
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# Boundary defined by polygon (perimeter)
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streets = ox.graph_from_point(point, dist = radius, custom_filter = custom_filter)
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crs = ox.graph_to_gdfs(streets, nodes = False).crs
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streets = ox.project_graph(streets)
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perimeter = GeoDataFrame(geometry=[Point(point[::-1])], crs = crs)
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perimeter = ox.project_gdf(perimeter).geometry[0].buffer(radius)
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streets = ox.graph_to_gdfs(streets, nodes = False)
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streets = MultiLineString(list(
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filter(
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# Filter lines with at least 2 points
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lambda line: len(line) >= 2,
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# Iterate over lines in geometry
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map(
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# Filter points within perimeter
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lambda line: list(filter(lambda xy: Point(xy).within(perimeter), zip(*line.xy))),
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streets.geometry
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)
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)
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)).buffer(dilate) # Dilate lines
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if not isinstance(streets, Iterable):
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streets = [streets]
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streets = list(map(pathify, streets))
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return streets, perimeter
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3
prettymaps/__init__.py
Normal file
3
prettymaps/__init__.py
Normal file
@@ -0,0 +1,3 @@
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# Fetch & Draw
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from .draw import *
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from .fetch import *
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164
prettymaps/curved_text.py
Normal file
164
prettymaps/curved_text.py
Normal file
@@ -0,0 +1,164 @@
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from matplotlib import pyplot as plt
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from matplotlib import patches
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from matplotlib import text as mtext
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import numpy as np
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import math
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class CurvedText(mtext.Text):
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"""
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A text object that follows an arbitrary curve.
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"""
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def __init__(self, x, y, text, axes, **kwargs):
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super(CurvedText, self).__init__(x[0],y[0],' ', **kwargs)
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axes.add_artist(self)
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##saving the curve:
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self.__x = x
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self.__y = y
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self.__zorder = self.get_zorder()
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##creating the text objects
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self.__Characters = []
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for c in text:
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if c == ' ':
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##make this an invisible 'a':
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t = mtext.Text(0,0,'a')
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t.set_alpha(0.0)
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else:
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t = mtext.Text(0,0,c, **kwargs)
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#resetting unnecessary arguments
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t.set_ha('center')
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t.set_rotation(0)
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t.set_zorder(self.__zorder +1)
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self.__Characters.append((c,t))
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axes.add_artist(t)
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##overloading some member functions, to assure correct functionality
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##on update
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def set_zorder(self, zorder):
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super(CurvedText, self).set_zorder(zorder)
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self.__zorder = self.get_zorder()
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for c,t in self.__Characters:
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t.set_zorder(self.__zorder+1)
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def draw(self, renderer, *args, **kwargs):
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"""
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Overload of the Text.draw() function. Do not do
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do any drawing, but update the positions and rotation
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angles of self.__Characters.
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"""
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self.update_positions(renderer)
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def update_positions(self,renderer):
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"""
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Update positions and rotations of the individual text elements.
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"""
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#preparations
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##determining the aspect ratio:
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##from https://stackoverflow.com/a/42014041/2454357
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##data limits
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xlim = self.axes.get_xlim()
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ylim = self.axes.get_ylim()
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## Axis size on figure
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figW, figH = self.axes.get_figure().get_size_inches()
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## Ratio of display units
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_, _, w, h = self.axes.get_position().bounds
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##final aspect ratio
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aspect = ((figW * w)/(figH * h))*(ylim[1]-ylim[0])/(xlim[1]-xlim[0])
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#points of the curve in figure coordinates:
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x_fig,y_fig = (
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np.array(l) for l in zip(*self.axes.transData.transform([
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(i,j) for i,j in zip(self.__x,self.__y)
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]))
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)
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#point distances in figure coordinates
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x_fig_dist = (x_fig[1:]-x_fig[:-1])
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y_fig_dist = (y_fig[1:]-y_fig[:-1])
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r_fig_dist = np.sqrt(x_fig_dist**2+y_fig_dist**2)
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#arc length in figure coordinates
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l_fig = np.insert(np.cumsum(r_fig_dist),0,0)
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#angles in figure coordinates
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rads = np.arctan2((y_fig[1:] - y_fig[:-1]),(x_fig[1:] - x_fig[:-1]))
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degs = np.rad2deg(rads)
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rel_pos = 10
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for c,t in self.__Characters:
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#finding the width of c:
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t.set_rotation(0)
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t.set_va('center')
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bbox1 = t.get_window_extent(renderer=renderer)
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w = bbox1.width
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h = bbox1.height
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#ignore all letters that don't fit:
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if rel_pos+w/2 > l_fig[-1]:
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t.set_alpha(0.0)
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rel_pos += w
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continue
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elif c != ' ':
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t.set_alpha(1.0)
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#finding the two data points between which the horizontal
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#center point of the character will be situated
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#left and right indices:
|
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il = np.where(rel_pos+w/2 >= l_fig)[0][-1]
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ir = np.where(rel_pos+w/2 <= l_fig)[0][0]
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||||
#if we exactly hit a data point:
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if ir == il:
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ir += 1
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#how much of the letter width was needed to find il:
|
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used = l_fig[il]-rel_pos
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rel_pos = l_fig[il]
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#relative distance between il and ir where the center
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#of the character will be
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fraction = (w/2-used)/r_fig_dist[il]
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##setting the character position in data coordinates:
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##interpolate between the two points:
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x = self.__x[il]+fraction*(self.__x[ir]-self.__x[il])
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y = self.__y[il]+fraction*(self.__y[ir]-self.__y[il])
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#getting the offset when setting correct vertical alignment
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#in data coordinates
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t.set_va(self.get_va())
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bbox2 = t.get_window_extent(renderer=renderer)
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||||
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bbox1d = self.axes.transData.inverted().transform(bbox1)
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bbox2d = self.axes.transData.inverted().transform(bbox2)
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dr = np.array(bbox2d[0]-bbox1d[0])
|
||||
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#the rotation/stretch matrix
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rad = rads[il]
|
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rot_mat = np.array([
|
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[math.cos(rad), math.sin(rad)*aspect],
|
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[-math.sin(rad)/aspect, math.cos(rad)]
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])
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||||
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##computing the offset vector of the rotated character
|
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drp = np.dot(dr,rot_mat)
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||||
|
||||
#setting final position and rotation:
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t.set_position(np.array([x,y])+drp)
|
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t.set_rotation(degs[il])
|
||||
|
||||
t.set_va('center')
|
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t.set_ha('center')
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||||
#updating rel_pos to right edge of character
|
||||
rel_pos += w-used
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204
prettymaps/draw.py
Normal file
204
prettymaps/draw.py
Normal file
@@ -0,0 +1,204 @@
|
||||
# OpenStreetMap Networkx library to download data from OpenStretMap
|
||||
#from sympy import geometry
|
||||
import osmnx as ox
|
||||
|
||||
# Matplotlib-related stuff, for drawing
|
||||
from matplotlib.path import Path
|
||||
from matplotlib import pyplot as plt
|
||||
import matplotlib.patches as patches
|
||||
from matplotlib.patches import PathPatch
|
||||
|
||||
# CV2 & Scipy & Numpy & Pandas
|
||||
import numpy as np
|
||||
from numpy.random import choice
|
||||
|
||||
# Shapely
|
||||
from shapely.geometry import *
|
||||
from shapely.affinity import *
|
||||
|
||||
# Geopandas
|
||||
from geopandas import GeoDataFrame
|
||||
|
||||
# etc
|
||||
import pandas as pd
|
||||
from functools import reduce
|
||||
from tabulate import tabulate
|
||||
from IPython.display import Markdown, display
|
||||
from collections.abc import Iterable
|
||||
|
||||
# Fetch
|
||||
from fetch import *
|
||||
|
||||
# Helper functions
|
||||
def get_hash(key):
|
||||
return frozenset(key.items()) if type(key) == dict else key
|
||||
|
||||
# Drawing functions
|
||||
def show_palette(palette, description = ''):
|
||||
'''
|
||||
Helper to display palette in Markdown
|
||||
'''
|
||||
|
||||
colorboxes = [
|
||||
f''
|
||||
for c in palette
|
||||
]
|
||||
|
||||
display(Markdown((description)))
|
||||
display(Markdown(tabulate(pd.DataFrame(colorboxes), showindex = False)))
|
||||
|
||||
def get_patch(shape, **kwargs):
|
||||
'''
|
||||
Convert shapely object to matplotlib patch
|
||||
'''
|
||||
#if type(shape) == Path:
|
||||
# return patches.PathPatch(shape, **kwargs)
|
||||
if type(shape) == Polygon and shape.area > 0:
|
||||
return PolygonPatch(list(zip(*shape.exterior.xy)), **kwargs)
|
||||
else:
|
||||
return None
|
||||
|
||||
def plot_shape(shape, ax, vsketch = None, **kwargs):
|
||||
'''
|
||||
Plot shapely object
|
||||
'''
|
||||
if isinstance(shape, Iterable) and type(shape) != MultiLineString:
|
||||
for shape_ in shape:
|
||||
plot_shape(shape_, ax, vsketch = vsketch, **kwargs)
|
||||
else:
|
||||
if not shape.is_empty:
|
||||
if vsketch is None:
|
||||
ax.add_patch(PolygonPatch(shape, **kwargs))
|
||||
else:
|
||||
if ('draw' not in kwargs) or kwargs['draw']:
|
||||
|
||||
if ('pen' in kwargs):
|
||||
vsketch.stroke(kwargs['pen'])
|
||||
else:
|
||||
vsketch.stroke(1)
|
||||
|
||||
vsketch.geometry(shape)
|
||||
|
||||
def plot_shapes(shapes, ax, vsketch = None, palette = None, **kwargs):
|
||||
'''
|
||||
Plot collection of shapely objects (optionally, use a color palette)
|
||||
'''
|
||||
if not isinstance(shapes, Iterable):
|
||||
shapes = [shapes]
|
||||
|
||||
for shape in shapes:
|
||||
if palette is None:
|
||||
plot_shape(shape, ax, vsketch = vsketch, **kwargs)
|
||||
else:
|
||||
plot_shape(shape, ax, vsketch = vsketch, fc = choice(palette), **kwargs)
|
||||
|
||||
def plot(
|
||||
# Address
|
||||
query,
|
||||
# Whether to use a backup for the layers
|
||||
backup = None,
|
||||
# Radius (in case of circular plot)
|
||||
radius = None,
|
||||
# Which layers to plot
|
||||
layers = {'perimeter': {}},
|
||||
# Drawing params for each layer (matplotlib params such as 'fc', 'ec', 'fill', etc.)
|
||||
drawing_kwargs = {},
|
||||
# Figure parameters
|
||||
figsize = (10, 10), ax = None, title = None,
|
||||
# Vsketch parameters
|
||||
vsketch = None,
|
||||
# Transform (translation & scale) params
|
||||
x = None, y = None, sf = None, rotation = None,
|
||||
):
|
||||
|
||||
# Interpret query
|
||||
if type(query) == tuple:
|
||||
query_mode = 'coordinates'
|
||||
elif False:
|
||||
query_mode = 'osmid'
|
||||
else:
|
||||
query_mode = 'address'
|
||||
|
||||
# Save maximum dilation for later use
|
||||
dilations = [kwargs['dilate'] for kwargs in layers.values() if 'dilate' in kwargs]
|
||||
max_dilation = max(dilations) if len(dilations) > 0 else 0
|
||||
|
||||
if backup is None:
|
||||
|
||||
#############
|
||||
### Fetch ###
|
||||
#############
|
||||
|
||||
# Define base kwargs
|
||||
if radius:
|
||||
base_kwargs = {'point': query if type(query) == tuple else ox.geocode(query), 'radius': radius}
|
||||
else:
|
||||
by_osmid = False
|
||||
base_kwargs = {'perimeter': get_perimeter(query, by_osmid = by_osmid)}
|
||||
|
||||
# Fetch layers
|
||||
layers = {
|
||||
layer: get_layer(
|
||||
layer,
|
||||
**base_kwargs,
|
||||
**(kwargs if type(kwargs) == dict else {})
|
||||
)
|
||||
for layer, kwargs in layers.items()
|
||||
}
|
||||
|
||||
# Transform layers (translate & scale)
|
||||
k, v = zip(*layers.items())
|
||||
v = GeometryCollection(v)
|
||||
if (x is not None) and (y is not None):
|
||||
v = translate(v, *(np.array([x, y]) - np.concatenate(v.centroid.xy)))
|
||||
if sf is not None:
|
||||
v = scale(v, sf, sf)
|
||||
if rotation is not None:
|
||||
v = rotate(v, rotation)
|
||||
layers = dict(zip(k, v))
|
||||
|
||||
else:
|
||||
layers = backup
|
||||
|
||||
if vsketch is None:
|
||||
# Ajust axis
|
||||
ax.axis('off')
|
||||
ax.axis('equal')
|
||||
ax.autoscale()
|
||||
|
||||
# Plot background
|
||||
if 'background' in drawing_kwargs:
|
||||
xmin, ymin, xmax, ymax = layers['perimeter'].bounds
|
||||
geom = scale(Polygon([
|
||||
(xmin, ymin),
|
||||
(xmin, ymax),
|
||||
(xmax, ymax),
|
||||
(xmax, ymin)
|
||||
]), 2, 2)
|
||||
|
||||
if vsketch is None:
|
||||
ax.add_patch(PolygonPatch(geom, **drawing_kwargs['background']))
|
||||
else:
|
||||
vsketch.geometry(geom)
|
||||
|
||||
############
|
||||
### Plot ###
|
||||
############
|
||||
|
||||
# Adjust bounds
|
||||
xmin, ymin, xmax, ymax = layers['perimeter'].buffer(max_dilation).bounds
|
||||
if vsketch is None:
|
||||
ax.set_xlim(xmin, xmax)
|
||||
ax.set_ylim(ymin, ymax)
|
||||
|
||||
# Draw layers
|
||||
for layer, shapes in layers.items():
|
||||
kwargs = drawing_kwargs[layer] if layer in drawing_kwargs else {}
|
||||
if 'hatch_c' in kwargs:
|
||||
plot_shapes(shapes, ax, vsketch = vsketch, lw = 0, ec = kwargs['hatch_c'], **{k:v for k,v in kwargs.items() if k not in ['lw', 'ec', 'hatch_c']})
|
||||
plot_shapes(shapes, ax, vsketch = vsketch, fill = False, **{k:v for k,v in kwargs.items() if k not in ['hatch_c', 'hatch', 'fill']})
|
||||
else:
|
||||
plot_shapes(shapes, ax, vsketch = vsketch, **kwargs)
|
||||
|
||||
# Return perimeter
|
||||
return layers
|
||||
153
prettymaps/fetch.py
Normal file
153
prettymaps/fetch.py
Normal file
@@ -0,0 +1,153 @@
|
||||
# OpenStreetMap Networkx library to download data from OpenStretMap
|
||||
from ast import Mult
|
||||
from operator import ge
|
||||
import osmnx as ox
|
||||
|
||||
# CV2 & Scipy & Numpy & Pandas
|
||||
import numpy as np
|
||||
|
||||
# Shapely
|
||||
from shapely.geometry import *
|
||||
from shapely.affinity import *
|
||||
from shapely.ops import unary_union
|
||||
|
||||
# Geopandas
|
||||
from geopandas import GeoDataFrame
|
||||
|
||||
# Matplotlib
|
||||
from matplotlib.path import Path
|
||||
|
||||
# etc
|
||||
from collections.abc import Iterable
|
||||
from functools import reduce
|
||||
from descartes import PolygonPatch
|
||||
|
||||
from functools import reduce
|
||||
|
||||
# Helper functions to fetch data from OSM
|
||||
|
||||
def ring_coding(ob):
|
||||
codes = np.ones(len(ob.coords), dtype = Path.code_type) * Path.LINETO
|
||||
codes[0] = Path.MOVETO
|
||||
return codes
|
||||
|
||||
def pathify(polygon):
|
||||
vertices = np.concatenate([np.asarray(polygon.exterior)] + [np.asarray(r) for r in polygon.interiors])
|
||||
codes = np.concatenate([ring_coding(polygon.exterior)] + [ring_coding(r) for r in polygon.interiors])
|
||||
return Path(vertices, codes)
|
||||
|
||||
def union(geometry):
|
||||
geometry = np.concatenate([[x] if type(x) == Polygon else x for x in geometry if type(x) in [Polygon, MultiPolygon]])
|
||||
geometry = reduce(lambda x, y: x.union(y), geometry[1:], geometry[0])
|
||||
return geometry
|
||||
|
||||
def get_boundary(point, radius, crs, circle = True, dilate = 0):
|
||||
if circle:
|
||||
return ox.project_gdf(
|
||||
GeoDataFrame(geometry = [Point(point[::-1])], crs = crs)
|
||||
).geometry[0].buffer(radius)
|
||||
else:
|
||||
x, y = np.stack(ox.project_gdf(
|
||||
GeoDataFrame(geometry = [Point(point[::-1])], crs = crs)
|
||||
).geometry[0].xy)
|
||||
r = radius
|
||||
return Polygon([
|
||||
(x-r, y-r), (x+r, y-r), (x+r, y+r), (x-r, y+r)
|
||||
]).buffer(dilate)
|
||||
|
||||
def get_perimeter(query, by_osmid = False, **kwargs):
|
||||
return ox.geocode_to_gdf(query, by_osmid = by_osmid, **kwargs, **{x: kwargs[x] for x in ['circle', 'dilate'] if x in kwargs.keys()})
|
||||
|
||||
def get_geometries(perimeter = None, point = None, radius = None, tags = {}, perimeter_tolerance = 0, union = True, circle = True, dilate = 0):
|
||||
|
||||
if perimeter is not None:
|
||||
# Boundary defined by polygon (perimeter)
|
||||
geometries = ox.geometries_from_polygon(
|
||||
unary_union(perimeter.geometry).buffer(perimeter_tolerance) if perimeter_tolerance > 0 else unary_union(perimeter.geometry),
|
||||
tags = {tags: True} if type(tags) == str else tags
|
||||
)
|
||||
perimeter = unary_union(ox.project_gdf(perimeter).geometry)
|
||||
|
||||
elif (point is not None) and (radius is not None):
|
||||
# Boundary defined by circle with radius 'radius' around point
|
||||
geometries = ox.geometries_from_point(point, dist = radius+dilate, tags = {tags: True} if type(tags) == str else tags)
|
||||
perimeter = get_boundary(point, radius, geometries.crs, circle = circle, dilate = dilate)
|
||||
|
||||
# Project GDF
|
||||
if len(geometries) > 0:
|
||||
geometries = ox.project_gdf(geometries)
|
||||
|
||||
# Intersect with perimeter
|
||||
geometries = geometries.intersection(perimeter)
|
||||
|
||||
if union:
|
||||
geometries = unary_union(reduce(lambda x,y: x+y, [
|
||||
[x] if type(x) == Polygon else list(x)
|
||||
for x in geometries if type(x) in [Polygon, MultiPolygon]
|
||||
], []))
|
||||
else:
|
||||
geometries = MultiPolygon(reduce(lambda x,y: x+y, [
|
||||
[x] if type(x) == Polygon else list(x)
|
||||
for x in geometries if type(x) in [Polygon, MultiPolygon]
|
||||
], []))
|
||||
|
||||
return geometries
|
||||
|
||||
def get_streets(perimeter = None, point = None, radius = None, width = 6, custom_filter = None, circle = True, dilate = 0):
|
||||
|
||||
# Boundary defined by polygon (perimeter)
|
||||
if perimeter is not None:
|
||||
# Fetch streets data, project & convert to GDF
|
||||
streets = ox.graph_from_polygon(union(perimeter.geometry), custom_filter = custom_filter)
|
||||
streets = ox.project_graph(streets)
|
||||
streets = ox.graph_to_gdfs(streets, nodes = False)
|
||||
# Boundary defined by polygon (perimeter)
|
||||
elif (point is not None) and (radius is not None):
|
||||
# Fetch streets data, save CRS & project
|
||||
streets = ox.graph_from_point(point, dist = radius+dilate, custom_filter = custom_filter)
|
||||
crs = ox.graph_to_gdfs(streets, nodes = False).crs
|
||||
streets = ox.project_graph(streets)
|
||||
# Compute perimeter from point & CRS
|
||||
perimeter = get_boundary(point, radius, crs, circle = circle, dilate = dilate)
|
||||
# Convert to GDF
|
||||
streets = ox.graph_to_gdfs(streets, nodes = False)
|
||||
# Intersect with perimeter & filter empty elements
|
||||
streets.geometry = streets.geometry.intersection(perimeter)
|
||||
streets = streets[~streets.geometry.is_empty]
|
||||
|
||||
if type(width) == dict:
|
||||
streets = unary_union([
|
||||
# Dilate streets of each highway type == 'highway' using width 'w'
|
||||
MultiLineString(
|
||||
streets[(streets.highway == highway) & (streets.geometry.type == 'LineString')].geometry.tolist() +
|
||||
list(reduce(lambda x, y: x+y, [
|
||||
list(lines)
|
||||
for lines in streets[(streets.highway == highway) & (streets.geometry.type == 'MultiLineString')].geometry
|
||||
], []))
|
||||
).buffer(w)
|
||||
for highway, w in width.items()
|
||||
])
|
||||
else:
|
||||
# Dilate all streets by same amount 'width'
|
||||
streets = MultiLineString(streets.geometry.tolist()).buffer(width)
|
||||
|
||||
return streets
|
||||
|
||||
def get_layer(layer, **kwargs):
|
||||
if layer == 'perimeter':
|
||||
if 'perimeter' in kwargs:
|
||||
return unary_union(ox.project_gdf(kwargs['perimeter']).geometry)
|
||||
elif 'point' in kwargs and 'radius' in kwargs:
|
||||
# Dummy request to fetch CRS
|
||||
crs = ox.graph_to_gdfs(ox.graph_from_point(kwargs['point'], dist = kwargs['radius']), nodes = False).crs
|
||||
perimeter = get_boundary(
|
||||
kwargs['point'], kwargs['radius'], crs,
|
||||
**{x: kwargs[x] for x in ['circle', 'dilate'] if x in kwargs.keys()}
|
||||
)
|
||||
return perimeter
|
||||
else:
|
||||
raise Exception("Either 'perimeter' or 'point' & 'radius' must be provided")
|
||||
if layer in ['streets', 'railway']:
|
||||
return get_streets(**kwargs)
|
||||
else:
|
||||
return get_geometries(**kwargs)
|
||||
21
setup.py
Normal file
21
setup.py
Normal file
@@ -0,0 +1,21 @@
|
||||
from setuptools import setup
|
||||
|
||||
setup(
|
||||
name='prettymaps',
|
||||
version='1.0.0',
|
||||
description='A simple python library to draw pretty maps from OpenStreetMap data',
|
||||
url='https://github.com/marceloprates/prettymaps',
|
||||
author='Marcelo Prates',
|
||||
author_email='marceloorp@gmail.com',
|
||||
license='MIT License',
|
||||
packages=['prettymaps'],
|
||||
install_requires=[
|
||||
'osmnx=1.0.1',
|
||||
'tabulate=0.8.9',
|
||||
'jupyter=1.0.0',
|
||||
],
|
||||
|
||||
classifiers=[
|
||||
'Intended Audience :: Science/Research',
|
||||
],
|
||||
)
|
||||
Reference in New Issue
Block a user