Open source PostGISadds spatial objects to the cross-platform PostgreSQL database. The three features that PostGIS delivers to PostgreSQL DBMS are spatial types, indexes, and functions. With support for different geometry types, the PostGIS spatial database allows querying and managing information abo...
Reference work2009, International Encyclopedia of Human Geography G. Rushton Explore book Spatial Aggregation as a Geographic Mask Throughout the world, the disclosure of personal information in census data is most commonly accomplished by aggregating data into groups or classes and releasing the data ...
Definition Namespace: System.Data.Entity.Spatial Assembly: EntityFramework.dll Gets a nullable Boolean value indicating whether this DbGeography value is empty. C# Copy public bool IsEmpty { get; } Property Value Boolean True if this DbGeography value is empty; otherwise, fals...
Spatial datahave traditionally been generated through mapping data in the field, but recent technological developments have widened the possible avenues for creating data for use in GIS. The most common method of collecting spatial data is the use ofglobal positioning system(GPS) receivers.GPSdata co...
NoUserDataWithUdidCan't find user geofencing data with provided udid. HTTP GET https://{geography}.atlas.microsoft.com/spatial/geofence/json?api-version=2022-08-01&deviceId={deviceId}&udid={udid}&lat={lat}&lon={lon} With optional parameters: ...
Physical geography is one of the most important factors influencing the distribution of villages, especially the topographical factors. In this paper, we obtained DEM data of Fujian Province from the open source geographic data cloud website, processed the images with relevant software, obtained the ...
geocoding errors arising from non-instrumental measurement errors are widely discussed in the field of geography and concern with spatial misaligned measurement errors have been raised in air pollution studies. However, we are not aware of previous efforts to systematically review and classify the types...
The management of spatial data in applications such as graphics and image processing, geography as well as computer aided design (CAD) imposes stringent ne... HP Kriegel,P Heep,S Heep,... - Springer Berlin Heidelberg 被引量: 9发表: 1992年 ...
In addition, PostGIS boasts impressive support for raster data and analysis, for which it incorporates the GDAL library (Warmerdam, 2008) to support a wide array of raster formats. The extension provides three new column types including geometry, geography, and raster and it supports spatial ...
The endemic presence of spatial dependence in geographic data has been called the First Law of Geography and is often attributed to Waldo Tobler. There are several possible solutions to this dilemma. First, objects might be chosen sufficiently far apart, allowing the assumption of independence to ...