def plot_route_network_thumbnail(g, map_style=None):
width = 512 # pixels
height = 300 # pixels
scale = 24
dpi = mpl.rcParams["figure.dpi"]
width_m = width * scale
height_m = height * scale
median_lat, median_lon = get_median_lat_lon_of_stops(g)
dlat = util.wgs84_height(height_m)
dlon = util.wgs84_width(width_m, median_lat)
spatial_bounds = {
"lon_min": median_lon - dlon,
"lon_max": median_lon + dlon,
"lat_min": median_lat - dlat,
"lat_max": median_lat + dlat
}
fig = plt.figure(figsize=(width / dpi, height / dpi))
ax = fig.add_subplot(111)
plt.subplots_adjust(bottom=0.0, left=0.0, right=1.0, top=1.0)
return plot_route_network_from_gtfs(g,
ax,
spatial_bounds,
map_alpha=1.0,
scalebar=False,
legend=False,
map_style=map_style)
def test_get_median_lat_lon_of_stops(self):
lat, lon = stats.get_median_lat_lon_of_stops(self.gtfs)
self.assertTrue(
lat != lon,
"probably median lat and median lon should not be equal for any real data set"
)
self.assertTrue(isinstance(lat, float))
self.assertTrue(isinstance(lon, float))
def _get_median_centered_plot_bounds(g):
lon_min, lon_max, lat_min, lat_max = get_spatial_bounds(g)
lat_median, lon_median = get_median_lat_lon_of_stops(g)
lon_diff = max(abs(lon_median - lon_min), abs(lon_median - lon_max))
lat_diff = max(abs(lat_median - lat_min), abs(lat_median - lat_max))
plot_lon_min = lon_median - lon_diff
plot_lon_max = lon_median + lon_diff
plot_lat_min = lat_median - lat_diff
plot_lat_max = lat_median + lat_diff
return plot_lon_min, plot_lon_max, plot_lat_min, plot_lat_max