mapviz.py 文件源码

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)