【746】读取geopandas文件gpkg & 写入gpkg文件(python & R)

一、Python

参考：geopandas库的基础学习

参考：Reading and Writing Files

代码 - read：

import pandas as pd
import geopandas as gpd
 
data=gpd.read_file('xxxxx.gpkg',layer='xxxxx',encoding='utf-8')	#layer参数为对应图层名称

代码 - write：

countries_gdf.to_file("package.gpkg", layer='countries', driver="GPKG")
cities_gdf.to_file("package.gpkg", layer='cities', driver="GPKG")

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二、R

参考：Writing multiple layers to GeoPackage using writeOGR() in R?

代码 - read & write：

library(sf)
 
# read data
nc     <- st_read(system.file("shape/nc.shp", package="sf"))
storms <- st_read(system.file("shape/storms_xyz.shp", package="sf"))
 
# write data
st_write(nc,     "nc.gpkg", "nc")
st_write(storms, "nc.gpkg", "storms", append = TRUE)
 
st_layers("nc.gpkg")
## Driver: GPKG 
## Available layers:
##   layer_name  geometry_type features fields
## 1         nc  Multi Polygon      100     14
## 2     storms 3D Line String       71      0