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--- software_development:python_folium_map [2020/04/27 02:17] – created prgram
+++ software_development:python_folium_map [2025/07/07 14:12] (current) – external edit 127.0.0.1
@@ Line 5: / Line 5: @@
-행정동 경계 그리기
+=== map 생성, 초기화 ===
+<code python>
+import folium
+m = folium.Map(location=[37.6, 127], tiles="OpenStreetMap", zoom_start=13)
+</code>
-Marker, Circle
+===행정동 경계 그리기===
+https://github.com/vuski/admdongkor
+[[data_analysis:work:korea_address_system]]
+geojson 이용
+<code python>
+nodeData = 'C:\\Users\\~~~\\Downloads\\HangJeongDong_ver20200401.geojson'
+nodeData = open(nodeData, encoding = "utf-8").read()
-FastMarkerCluster
+import json
+nodes = json.loads(nodeData)
+geo_json = folium.GeoJson(nodeData, tooltip=folium.GeoJsonTooltip(fields=['adm_nm']))
+geo_json = folium.GeoJson(nodes, tooltip=folium.GeoJsonTooltip(fields=['adm_nm']), smooth_factor=10)
+geo_json.add_to(m)
+</code>
+line 7-8: string이나 json으로 변환된 변수나 모두 적용가능
+smooth_factor 값이 크면, performance 상승(smoothness와 trade-off) (([https://github.com/python-visualization/folium/issues/951|github]]))
+GeoJsonTooltip 에 Series 를 넣으면 자동으로 tooltip 생성
+GeoJsonPopUp 은 버전 때문에 안되는듯?
+===Marker, Circle===
+==Circle (bubble)==
+<code python>
+from tqdm import tqdm
+for x in tqdm(dcd):
+    for i,l in enumerate(li):
+        tmp = df[df.dv_nm==l][df.admin_dcd==x]
+        lat = tmp['y_codn'].mean()
+        lon = tmp['x_codn'].mean()
+        count = len(tmp)
+        if pd.isnull(lat) or pd.isnull(lon):
+            continue
+        folium.CircleMarker((lat,lon), radius=count / 5, color=col[i], fill_color=col[i], popup=count).add_to(m)
+folium.LayerControl(collapsed=False).add_to(m)
+</code>
+li,col : dv_nm 에 따라 색을 다르게 함
+==Marker==
+<code python>
+from tqdm import tqdm
+for x in tqdm(range(len(df))):
+    if df.iloc[x,:]['dv_nm'] == '@@':
+        color = 'blue'
+    elif df.iloc[x,:]['dv_nm'] == '##':
+        color = 'red'
+    location = (latitude[x], longitude[x])
+    folium.Marker(location, popup=df.iloc[x,:]['nm'], icon=folium.Icon(color=color)).add_to(m)
+</code>
+===Marker Cluster ===
+Zoom에 따라서 Cluster 를 만들어줌
+<code python>
+from folium.plugins import MarkerCluster
+mc = MarkerCluster()
+for i,row in tqdm(df_store.iterrows()):
+    lat = row['y_codn']
+    lon = row['x_codn']
+    if math.isnan(lat) or math.isnan(lon):
+        continue
+    #folium.Marker((lat,lon), popup=row['pos_nm'], icon=folium.Icon(color='blue')).add_to(m)
+    mc.add_child(folium.Marker(location=[lat,lon], popup=row['pos_nm']))
+m.add_child(mc)
+# Save to html
+m.save(os.path.join('', 'map.html'))
+</code>
+===FastMarkerCluster===
+https://medium.com/@bobhaffner/folium-markerclusters-and-fastmarkerclusters-1e03b01cb7b1
+https://www.reddit.com/r/learnpython/comments/bg6w3f/hey_guys_im_struggling_to_create_a_geojson/
+https://python-visualization.github.io/folium/quickstart.html#Markers
+zoom 에 따라서 Cluster 를 만들어줌.
+Fast는 javascript에서 직접 실행해서 더 빠름
+<code python>
+from folium.plugins import FastMarkerCluster
+</code>
+==Circle==
+<code python>
+callback = ("""function (row) {
+                        var circle = L.circle(new L.LatLng(row[0], row[1]), {color: "blue", radius: row[2]});
+                        var popup = L.popup({maxWidth: '300'});
+                        const display_text = {text: row[2]};
+                        var mytext = $(`<div id='mytext' class='display_text' style='width: 100.0%; height: 100.0%;'> ${display_text.text}</div>`)[0];
+                        popup.setContent(mytext);
+                        circle.bindPopup(popup);
+                        return circle;
+             };""")
+m.add_child(FastMarkerCluster(df[df.dv_nm==li[1]][['y_codn', 'x_codn','count']].values.tolist(), callback=callback))
+</code>
+==Marker ==
+<code python>
+callback = ('function (row) {'
+            	'var marker = L.marker(new L.LatLng(row[0], row[1]), {color: "blue"});'
+            	'var icon = L.AwesomeMarkers.icon({'
+                            "icon: 'info-sign',"
+                            "iconColor: 'white',"
+                            "markerColor: 'blue',"
+                            "prefix: 'glyphicon',"
+                            "extraClasses: 'fa-rotate-0'"
+            	'});'
+            	'marker.setIcon(icon);'
+            	"var popup = L.popup({maxWidth: '300'});"
+            	"const display_text = {text: row[2]};"
+            	"var mytext = $(`<div id='mytext' class='display_text' style='width: 100.0%; height: 100.0%;'> ${display_text.text}</div>`)[0];"
+            	"popup.setContent(mytext);"
+            	"marker.bindPopup(popup);"
+            	'return marker};')
+m.add_child(FastMarkerCluster(df[['y_codn', 'x_codn', 'nm']].dropna().values.tolist(), callback=callback))
+</code>
+row[0,1,2] 를 사용
+popup
+===map 저장===
+<code python>
+m.save(os.path.join('', 'map.html'))
+</code>
 {{tag>software_development python folium 지도그리기}}