The Three Basic Elements of Geospatial Analysis

The three basic elements of geospatial analysis are spatial location, attributes, and time.

1, spatial analysis: under the support of computer technology, to extract geographic objects in the location, attributes, relationships and other aspects of the information, in order to support the specific spatial decision-making problems.

2. Basic tasks of spatial analysis: location analysis, condition analysis, trend analysis, pattern recognition, simulation and prediction.

3, the main content of spatial analysis: element characteristics and spatial relationship analysis, site selection analysis, spatial and temporal dynamic change analysis, spatial network analysis, proximity analysis and distance analysis, surface generation and surface analysis.

4, spatial analysis of commonly used methods: quantitative analysis, statistical analysis, spatial query analysis, superposition analysis, buffer analysis, network analysis, other analysis methods.

5, the general process of spatial analysis: clear objectives and methods, preparation of spatial data, spatial analysis operations, interpretation and evaluation of the results, the results of the output.

Spatial analysis of the data base:

1, the definition of spatial data: used to indicate the geospatial system elements of quantity, quality, distribution, interconnection, change law and other characteristics of the data.

2, the composition of spatial data: location (fundamental), attributes (core), time (key).

3, the basic characteristics of spatial data: spatial, temporal, thematic, large amount of data.

4, the data source of spatial data: map data, remote sensing data, measured data, statistical data, text data, data products have been generated (4D products).

5, the acquisition of spatial data: map digitization (paper maps into digital maps), field surveys, photogrammetry and remote sensing, access to textual reports and statistical data, data conversion, *** enjoy the data and purchase data.