是否可以根据激活的 LayerControl 绘制标记？

Question

我在我的 Folium 地图上设置了两个切片图层。像这样的：

folium_map = folium.Map(location=[50, 50], control_scale=True, zoom_start=2, max_bounds=True, prefer_canvas=False)
folium.TileLayer('openstreetmap').add_to(folium_map)
folium.TileLayer('google maps').add_to(folium_map)

如果选择了 Google 地图，我希望仅显示一个文本标记，如果选择了 OpenStreet 地图，我希望该标记具有文本和图像。

是否可以为不同的瓦片层绘制一组独特的标记？

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我接受了双地图建议，效果很好。我现在正在尝试将子组添加到功能组。但是，对偶映射似乎不喜欢子组。主地图（左侧）有效。次要地图（右侧）反转子组选项，选择后，弹出窗口出现在主屏幕上。有没有办法来解决这个问题？这是我的测试代码：

import folium
from folium import plugins
import pandas as pd

###############################################################################
# File paths
###############################################################################
main_dir = 'E:\Test\\'
output_dir = main_dir + 'Output\\'

###############################################################################
# Create test file
###############################################################################
# List1
Name = ['Tom', 'Mary', 'Juannita', 'Ivan', 'Peter', 'Lisa', 'Juan', 'Boris']
Lat = [ 51.507351, 38.90719,  19.432608,  55.755568, 51.47333, 38.890067,  19.521744,  55.650486]
Lng = [ -0.127758, -77.036871, -99.133208,  37.614361,  -0.134092, -76.984608, -99.219789,  37.732448]
Location = ['London', 'Washington', 'Mexico',  'Moscow', 'London', 'Washington', 'Mexico', 'Moscow']
Color = ['red', 'red', 'blue', 'red', 'blue', 'blue', 'blue', 'red']
Ownership = ['Partner', 'Partner', 'Own', 'Partner', 'Own', 'Own', 'Own', 'Partner']
Type = ['ABC', 'Acme', 'Acme', 'Acme', 'ABC', 'ABC', 'Acme', 'Acme']


  
# Get the list of tuples from two lists and merge them by using zip().
list_of_tuples = list(zip(Name, Lat, Lng, Location, Color, Ownership, Type))
   
# Converting lists of tuples into Pandas Dataframe.
df1 = pd.DataFrame(list_of_tuples,
                  columns = ['Name', 'Latitude', 'Longitude', 'Location', 'Color', 'Ownership','Type'])

###############################################################################
# Folium Map Setup
###############################################################################
folium_map = folium.plugins.DualMap(location=[50, 50],
                                    control_scale=True,
                                    zoom_start=9,
                                    tiles=None,
                                    max_bounds=True, 
                                    prefer_canvas=False)

folium_map.fit_bounds([[180, 89], [-180, -89]])

folium.TileLayer('openstreetmap').add_to(folium_map.m1)

folium.raster_layers.TileLayer(
    tiles="http://{s}.google.com/vt/lyrs=s&x={x}&y={y}&z={z}",
    attr="google",
    name="google maps",
    max_zoom=20,
    subdomains=["mt0", "mt1", "mt2", "mt3"],
    overlay=False,
    control=True,
    ).add_to(folium_map.m2)

minimap = plugins.MiniMap(toggle_display=True)
folium_map.add_child(minimap)

plugins.Fullscreen(
    position='topright',
    title='Expand me',
    title_cancel='Exit me',
    force_separate_button=True
    ).add_to(folium_map)

###############################################################################
# Layer Control:
##############################################################################@
mcg = folium.plugins.MarkerCluster(name="Locations with Images", control=False) # create marker clusters
folium_map.add_child(mcg)

###############################################################################
# ABC Stores
###############################################################################
fg1 = folium.FeatureGroup(name='ABC Stores')
folium_map.add_child(fg1)

g1 = plugins.FeatureGroupSubGroup(fg1, '\tOwn - ABC', show=False)
folium_map.add_child(g1)

g2 = plugins.FeatureGroupSubGroup(fg1, '\tPartnership - ABC', show=False)
folium_map.add_child(g2)

for index, row in df1.iterrows():
    if row['Type'] == 'ABC':
        kw = {"color": row['Color'], "icon": "shopping-cart"}
        icon_symbol = folium.Icon(**kw)
        popup = row['Name']
        if row['Ownership'] == 'Own':
            folium.Marker(
                location = [row['Latitude'], row['Longitude']],
                draggable = False,
                clustered_marker=True,
                tooltip = '<strong>' + str(row['Location'] + '</strong>'),
                popup = folium.Popup(popup, max_width=350),
                icon=icon_symbol
                ).add_to(g1)
        else:
            folium.Marker(
                location = [row['Latitude'], row['Longitude']],
                draggable = False,
                clustered_marker=True,
                tooltip = '<strong>' + str(row['Location'] + '</strong>'),
                popup = folium.Popup(popup, max_width=350),
                icon=icon_symbol
                ).add_to(g2)

###############################################################################
# Acme Fitness
###############################################################################
fg2 = folium.FeatureGroup(name='Acme Fitness')
folium_map.add_child(fg2)

g1 = plugins.FeatureGroupSubGroup(fg2, '\tOwn - ACME', show=False)
folium_map.add_child(g1)

g2 = plugins.FeatureGroupSubGroup(fg2, '\tPartnership - ACME', show=False)
folium_map.add_child(g2)

for index, row in df1.iterrows():
    if row['Type'] == 'Acme':
        kw = {"prefix": "fa", "color": row['Color'], "icon": "camera"}
        icon_symbol = folium.Icon(**kw)
        popup = row['Name']
        if row['Ownership'] == 'Own':
            folium.Marker(
                location = [row['Latitude'], row['Longitude']],
                draggable = False,
                clustered_marker=True,
                tooltip = '<strong>' + str(row['Location'] + '</strong>'),
                popup = folium.Popup(popup, max_width=350),
                icon=icon_symbol
                ).add_to(g1)
        else:
            folium.Marker(
                location = [row['Latitude'], row['Longitude']],
                draggable = False,
                clustered_marker=True,
                tooltip = '<strong>' + str(row['Location'] + '</strong>'),
                popup = folium.Popup(popup, max_width=350),
                icon=icon_symbol
                ).add_to(g2)

folium.LayerControl().add_to(folium_map)

folium_map.save(output_dir + 'Test.html') 

Answer 1

我花了很多时间研究这个，但似乎不可能在不同的图层上绘制独特的标记。似乎两张并排的地图会做我想要的。请参阅this page 了解更多信息。请参阅this page 了解如何制作 Google 地图的平铺层。

更新 代码和图像已更新，以反映问题已被编辑并添加了新问题的事实。使用 subgroup 功能对标记进行分组的关键是建立父子关系。在这种情况下，由于是多图的例子，所以创建了如下的父子关系来实现。

folium_map.m1 => fg_A(FueatureGroup) => g_1(SubGroup) => folium.Maker(g_1)

import folium
import folium.plugins

folium_map = folium.plugins.DualMap(location=[52.5, 5.15],
                                    control_scale=True,
                                    zoom_start=9,
                                    tiles=None,
                                    max_bounds=True, 
                                    prefer_canvas=False)

folium.TileLayer('openstreetmap').add_to(folium_map.m1)
folium.raster_layers.TileLayer(
    tiles="http://{s}.google.com/vt/lyrs=s&x={x}&y={y}&z={z}",
    attr="google",
    name="google maps",
    max_zoom=20,
    subdomains=["mt0", "mt1", "mt2", "mt3"],
    overlay=False,
    control=True,
).add_to(folium_map.m2)

#fg_both = folium.FeatureGroup(name='markers_both').add_to(folium_map)
fg_A = folium.FeatureGroup(name='markers_1').add_to(folium_map.m1)
g1 = folium.plugins.FeatureGroupSubGroup(fg_A, 'g1')
folium_map.m1.add_child(g1)

fg_B = folium.FeatureGroup(name='markers_2').add_to(folium_map.m2)
g2 = folium.plugins.FeatureGroupSubGroup(fg_B, 'g2')
folium_map.m2.add_child(g2)

#icon_red = folium.Icon(color='red')
#folium.Marker((52.6, 5.0), tooltip='both', icon=icon_red).add_to(fg_both)
g1.add_child(folium.Marker((52.4, 5.0), tooltip="1"))
g1.add_child(folium.Marker((52.0, 5.4), tooltip="2"))
g2.add_child(folium.Marker((52.4, 5.6), tooltip="3"))
g2.add_child(folium.Marker((52.0, 5.8), tooltip="4"))

folium.LayerControl().add_to(folium_map)

folium_map