SpatiaLite (SQLite + spatial)
Open BetaSpatiaLite 是 SQLite 的空间扩展。是一种紧凑的单文件数据库格式，全面支持空间查询、索引和 OGC 标准。
主要特点
关于 SpatiaLite 格式
SpatiaLite is SQLite with a spatial extension: a single file database, no server, yet real SQL with geometry, spatial functions and indexes. The file is simply copied, put into a repository or onto a flash drive and works anywhere.
The format is taken when the data has to be computed with rather than admired: select buildings within a radius, sum up street length by type, join layers with a query, filter by an attribute. All of that is done with a query straight against the file, without deploying PostGIS.
What is inside: one database file where each OSM layer is a separate table with geometry and attributes; the service tables are filled in and spatial indexes are built at write time. The coordinates are WGS84 (EPSG:4326). QGIS opens the file by drag and drop, GDAL/OGR and Python read it directly.
About the neighbouring format: GeoPackage is also SQLite and also a single file, but it is an OGC standard and other people's software understands it better. SpatiaLite wins where you write the queries yourself and need its full set of spatial functions.
打开 SpatiaLite 文件的程序
以下程序可以打开、编辑和处理从 OSM2CDR 导出的 SpatiaLite (SQLite + spatial)（.sqlite）文件：
格式规格
- 开放标准
- 支持 3D 坐标
- 无损（无质量损失）
- 存储要素属性
- 输出：1 个文件
- SpatiaLite .sqlite (open SQLite extension). Indexed spatial queries with R-Tree. Opens in QGIS, SpatiaLite GUI.
谁在使用 SpatiaLite 地图
如何导出 SpatiaLite
导出后如何打开
- QGIS — drag the file into the program window or add it through the Data Source Manager; the tables will appear as ordinary layers.
- DB Browser for SQLite — look through the tables and run a query; for spatial functions load the mod_spatialite module.
- spatialite-gui and the console spatialite — the project's own tools: queries with spatial functions work out of the box.
- Python — sqlite3 with mod_spatialite loaded for queries, or geopandas.read_file with the table you need given as the layer.
- GDAL — ogr2ogr converts the database into GeoPackage and back with one command if another format turns out to be needed.
SpatiaLite 格式的热门地图
导出 SpatiaLite (SQLite + spatial) 地图
从 OpenStreetMap 下载专业的 SpatiaLite 地图。即时生成，任意区域。
常见问题
相关格式
经常一起导出
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