传单地图中的多边形叠加

Question

我正在使用ipyleaflet 使用以下代码创建交互式地图：

from ipyleaflet import Map, Polygon


polygon = Polygon(
    locations=[[(38.844185,-4.804621),(39.241299,-1.899833),(40.74308,-2.205491),(40.34742,-5.17429),(38.844185,-4.804621)],[(39.365192,-1.941078),(40.867912,-1.567062),(41.276688,-4.670904),(39.775406,-4.976737),(39.365192,-1.941078)],[(39.706161,-1.849863),(41.207623,-1.465817),(41.617561,-4.594476),(40.117233,-4.908839),(39.706161,-1.849863)],[(39.702591,-5.033657),(40.101254,-2.077048),(41.602196,-2.389729),(41.204681,-5.413605),(39.702591,-5.033657)]],
    color="green",
    fill_opacity= 0.5,
    fill_color="green"
)

m = Map(center=(38.5531, -4.6914), zoom=6)
m.add_layer(polygon);

m

输出如下所示：

我想知道如何使多边形的交集不完全透明。查看文档中的属性https://ipyleaflet.readthedocs.io/en/latest/api_reference/polygon.html，我没有看到任何选项？

所需输出的示例如下图所示：

Answer 1

您得到了不好的结果，因为 ipyleaflet 减去了椭圆形的多边形（您可以在您发布的文档链接“带孔的多边形”的第二个示例中看到它）

您需要分别添加每个多边形，我稍微更改了您的代码，现在它在循环中创建和应用多边形：

from ipyleaflet import Map, Polygon

poligons = [[(38.844185,-4.804621),(39.241299,-1.899833),(40.74308,-2.205491),(40.34742,-5.17429),(38.844185,-4.804621)],
            [(39.365192,-1.941078),(40.867912,-1.567062),(41.276688,-4.670904),(39.775406,-4.976737),(39.365192,-1.941078)],
            [(39.706161,-1.849863),(41.207623,-1.465817),(41.617561,-4.594476),(40.117233,-4.908839),(39.706161,-1.849863)],
            [(39.702591,-5.033657),(40.101254,-2.077048),(41.602196,-2.389729),(41.204681,-5.413605),(39.702591,-5.033657)]]

m = Map(center=(38.5531, -4.6914), zoom=6)

for poly in poligons:
    polygon = Polygon(
        locations= poly,
        color="green",
        fill_opacity= 0.5,
        fill_color="green"
    )
    m.add_layer(polygon);

m

结果：