Automatic labels

LabelLayer places place names by simulated annealing to limit overlaps. Here the mainland region names, over a European background.

from mappyng import Map, BasemapLayer, LabelLayer, VectorLayer
from mappyng.data import load_france_regions, load_europe

europe = load_europe().to_crs(2154)
regions = load_france_regions().to_crs(2154)

bbox_metro = [90000, 6040000, 1280000, 7150000]
cartouches = {
    0: {"bbox": [-6890454, 1780151, -6799589, 1874186], "crs": 3857,
        "cartouche_title": "Guadeloupe", "cartouche_title_size": 7,
        "border_radius": 6, "box_shadow": True},
    1: {"bbox": [-6826862, 1609607, -6759494, 1685367], "crs": 3857,
        "cartouche_title": "Martinique", "cartouche_title_size": 7,
        "border_radius": 6, "box_shadow": True},
    2: {"bbox": [-6136680, 235261, -5707791, 671780], "crs": 3857,
        "cartouche_title": "French Guiana", "cartouche_title_size": 7,
        "border_radius": 6, "box_shadow": True},
    3: {"bbox": [6136383, -2448160, 6226316, -2366992], "crs": 3857,
        "cartouche_title": "Reunion", "cartouche_title_size": 7,
        "border_radius": 6, "box_shadow": True},
    4: {"bbox": [5006226, -1459183, 5050208, -1416184], "crs": 3857,
        "cartouche_title": "Mayotte", "cartouche_title_size": 7,
        "border_radius": 6, "box_shadow": True},
}

m = Map(europe, bbox=bbox_metro, width=900, height=1000, padding=25,
        facecolor="#eceff4", border_radius=10,
        cartouche_params=cartouches, cartouche_spacing=15)
m.add(BasemapLayer())
m.add_shadow(europe, {"query": "code_pays_iso3=='FRA'", "on_cartouches": True})
m.add(VectorLayer(regions, stroke="#9aa6b2", stroke_width=0.4, on_cartouches=True))
m.add(LabelLayer(regions, column="LIB_GEO", font_size=11))
m.title("Regions of mainland France")
m.source("Basemap: Natural Earth, IGN ADMIN-EXPRESS")