EXTENSION 24 3.3.2 Spatially enable database without using EXTENSION (discouraged) 24 3.4 Upgrading spatial databases 25 3.4.1 Soft upgrade 25 3.4.1.1 Soft Upgrade 9.1+ using extensions 25 3.4.1 c091ca05bee4c/233ead5e.png) PostGIS is a spatial extension for the PostgreSQL relational database that was created by Refractions Research Inc, as a spatial database technology research project. Refractions PostGIS to better support a range of important GIS functionality in the areas of OGC and SQL/MM spatial standards, advanced topological constructs (coverages, surfaces, networks), data source for desktop

Géométrie valide 41 4.4.3 Gestion de la validité 43 4.5 Systèmes de référence spatiale 44 4.5.1 Table SPATIAL_REF_SYS 45 4.5.2 Systèmes de référence spatiale définis par l'utilisateur 46 4.6 Tables spatiales 1.3 Relations spatiales générales 61 5.2 Utilisation des index spatiaux 63 5.3 Exemples de SQL spatial 63 6 Conseils sur les performances 67 6.1 Petites tables de grandes géométries 67 6.1.1 Description maintenance des Geography, maintenance des index Geography et Geometry (index 2D, 3D, nD et tout index spatial), structures internes des Geometry, intégration des fonctionnalités GEOS et alignement avec les publications

3.3 Creating spatial databases 23 3.3.1 Spatially enable database using EXTENSION 23 3.3.2 Spatially enable database without using EXTENSION (discouraged) ... 23 3.4 Upgrading spatial databases . Pre 9.1+ or without extensions ... 25 3.4.2 Hard upgrade ... 26 # 4 Data Management ... 28 4.1 Spatial Data Model ... 28 4.1.1 OGC Geometry ... 28 4.1.1.1 Point ... 29 4.1.1.2 LineString . Managing Validity ... 42 4.5 Spatial Reference Systems 43 4.5.1 SPATIAL_REF_SYS Table 44 4.5.2 User-Defined Spatial Reference Systems 45 4.6 Spatial Tables 45 4.6.1 Creating a Spatial Table 45 4.6.2 GEOMETRY_COLUMNS

Tuning 21 3.1.1 Startup 21 3.1.2 Runtime 22 3.2 Configuring raster support 22 3.3 Creating spatial databases 23 3.3.1 Spatially enable database using EXTENSION 23 3.3.2 Spatially enable database (discouraged) 23 3.3.3 Create a spatially-enabled database from a template 24 3.4 Upgrading spatial databases 24 3.4.1 Soft upgrade 24 3.4.1.1 Soft Upgrade Pre 9.1+ or without extensions 1.2 Soft Upgrade 9.1+ using extensions 25 3.4.2 Hard upgrade 26 # 4 Data Management 28 4.1 Spatial Data Model 28 4.1.1 OGC Geometry 28 4.1.1.1 Point 29 4.1.1.2 LineString 29

21 3.1.1 Startup 21 3.1.2 Runtime 22 3.2 Configuring raster support 22 3.3 Creating spatial databases 23 3.3.1 Spatially enable database using EXTENSION 23 3.3.2 Spatially enable (discouraged) 23 3.3.3 Create a spatially-enabled database from a template 24 3.4 Upgrading spatial databases 24 3.4.1 Soft upgrade 24 3.4.1.1 Soft Upgrade 9.1+ using extensions 24 Upgrade Pre 9.1+ or without extensions 25 3.4.2 Hard upgrade 26 # 4 Data Management 28 4.1 Spatial Data Model 28 4.1.1 OGC Geometry 28 4.1.1.1 Point 29 4.1.1.2 LineString 29

3.3 Creating spatial databases 22 3.3.1 Spatially enable database using EXTENSION 22 3.3.2 Spatially enable database without using EXTENSION (discouraged) ... 22 3.4 Upgrading spatial databases ... Pre 9.1+ or without extensions ... 24 3.4.2 Hard upgrade ... 25 # 4 Data Management ... 27 4.1 Spatial Data Model ... 27 4.1.1 OGC Geometry ... 27 4.1.1.1 Point ... 28 4.1.1.2 LineString . Managing Validity ... 41 4.5 Spatial Reference Systems 42 4.5.1 SPATIAL_REF_SYS Table 43 4.5.2 User-Defined Spatial Reference Systems 44 4.6 Spatial Tables 44 4.6.1 Creating a Spatial Table 44 4.6.2 GEOMETRY_COLUMNS

Tuning 33 3.1.1 Startup 33 3.1.2 Runtime 34 3.2 Configuring raster support 34 3.3 Creating spatial databases 35 3.3.1 Spatially enable database using EXTENSION 35 3.3.2 Spatially enable database (discouraged) 35 3.3.3 Create a spatially-enabled database from a template 36 3.4 Upgrading spatial databases 36 3.4.1 Soft upgrade 36 3.4.1.1 Soft Upgrade Pre 9.1+ or without extensions FAQ 46 4.1.3 Spatial Metadata Tables 46 4.1.3.1 The SPATIAL_REF_SYS Table and Spatial Reference Systems 47 4.1.3.2 The GEOMETRY_COLUMNS View 48 4.1.3.3 Creating a Spatial Table 48

Extensions and Deploying them 10 2.5.4 Testing 12 2.5.5 Installation 27 2.6 Creating a spatial database using EXTENSIONS 28 2.7 Create a spatially-enabled database without using extensions 28 4.3 Using OpenGIS Standards 50 4.3.1 The SPATIAL_REF_SYS Table and Spatial Reference Systems 50 4.3.2 The GEOMETRY_COLUMNS VIEW 51 4.3.3 Creating a Spatial Table 52 4.3.4 Manually Registering Geometry Using Indexes 70 4.7 Complex Queries 70 4.7.1 Taking Advantage of Indexes 70 4.7.2 Examples of Spatial SQL 71 # 5 Raster Data Management, Queries, and Applications 74 5.1 Loading and Creating Rasters

之一，表示输入中维度的顺序。channels_last 对应输入尺寸为 (batch, spatial_dim1, spatial_dim2, spatial_dim3, channels)，channels_first 对应输入尺寸为 (batch, channels, spatial_dim1, spatial_dim2, spatial_dim3)。它默认为从 Keras 配置文件~.keras/keras 之一，表示输入中维度的顺序。channels_last 对应输入尺寸为 (batch, spatial_dim1, spatial_dim2, spatial_dim3, channels)，channels_first 对应输入尺寸为 (batch, channels, spatial_dim1, spatial_dim2, spatial_dim3)。它默认为从 Keras 配置文件~.keras/keras 之一，表示输入中维度的顺序。channels_last 对应输入尺寸为 (batch, spatial_dim1, spatial_dim2, spatial_dim3, channels)，channels_first 对应输入尺寸为 (batch, channels, spatial_dim1, spatial_dim2, spatial_dim3)。它默认为从 Keras 配置文件~.keras/keras

world-class geospatial framework built on top of Django, that enables storage, manipulation and display of spatial data. See the GeoDjango documentation for more. humanize A set of Django template filters useful Importing Spatial Data Spatial Queries Putting your data on the map GeoDjango Installation Overview Requirements Installation Troubleshooting Platform-specific instructions GeoDjango Model API Spatial Field Field Types Spatial Field Options Geometry Field Options GeoManager GeoDjango Database API Spatial Backends Creating and Saving Models with Geometry Fields Creating and Saving Models with Raster Fields Spatial