geopandas

问题 Context I just get into trouble while trying to do some I/O operations on some databases from a Python3 script. When I want to connect to a database, I habitually use psycopg2 in order to handle the connections and cursors. My data are usually stored as Pandas DataFrames and/or GeoPandas's equivalent GeoDataFrames. Difficulties In order to read data from a database table; Using Pandas: I can rely on its .read_sql() methods which takes as a parameter con , as stated in the doc: con :

问题 Context I just get into trouble while trying to do some I/O operations on some databases from a Python3 script. When I want to connect to a database, I habitually use psycopg2 in order to handle the connections and cursors. My data are usually stored as Pandas DataFrames and/or GeoPandas's equivalent GeoDataFrames. Difficulties In order to read data from a database table; Using Pandas: I can rely on its .read_sql() methods which takes as a parameter con , as stated in the doc: con :

问题 Context I just get into trouble while trying to do some I/O operations on some databases from a Python3 script. When I want to connect to a database, I habitually use psycopg2 in order to handle the connections and cursors. My data are usually stored as Pandas DataFrames and/or GeoPandas's equivalent GeoDataFrames. Difficulties In order to read data from a database table; Using Pandas: I can rely on its .read_sql() methods which takes as a parameter con , as stated in the doc: con :

问题 Context I just get into trouble while trying to do some I/O operations on some databases from a Python3 script. When I want to connect to a database, I habitually use psycopg2 in order to handle the connections and cursors. My data are usually stored as Pandas DataFrames and/or GeoPandas's equivalent GeoDataFrames. Difficulties In order to read data from a database table; Using Pandas: I can rely on its .read_sql() methods which takes as a parameter con , as stated in the doc: con :

问题 I have a network formed with two Polygons and I want to now which nodes are only in the bigger Polygon. How can I do this? Here is the code: import osmnx as ox import igraph as ig import matplotlib.pyplot as plt import pandas as pd import networkx as nx city = ['Portugal, Lisbon', 'Portugal, Amadora'] G = ox.graph_from_place(city, network_type='drive', simplify=True) G_nx = nx.relabel.convert_node_labels_to_integers(G) nodes, edges = ox.graph_to_gdfs(G_nx, nodes=True, edges=True) Here are the

问题 I have a network formed with two Polygons and I want to now which nodes are only in the bigger Polygon. How can I do this? Here is the code: import osmnx as ox import igraph as ig import matplotlib.pyplot as plt import pandas as pd import networkx as nx city = ['Portugal, Lisbon', 'Portugal, Amadora'] G = ox.graph_from_place(city, network_type='drive', simplify=True) G_nx = nx.relabel.convert_node_labels_to_integers(G) nodes, edges = ox.graph_to_gdfs(G_nx, nodes=True, edges=True) Here are the

来源： https://stackoverflow.com/questions/63385650/how-to-create-a-scalebar-using-cartopy-and-matplotlib

来源： https://stackoverflow.com/questions/61050942/make-geopandas-dataframe-from-points-then-project-the-gpd-got-error-cannot-tr

来源： https://stackoverflow.com/questions/61050942/make-geopandas-dataframe-from-points-then-project-the-gpd-got-error-cannot-tr

来源： https://stackoverflow.com/questions/61050942/make-geopandas-dataframe-from-points-then-project-the-gpd-got-error-cannot-tr