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In the Big Data era, microblog is being increasingly investigated due to its big data features. For example, it provides large volumes of data for discovery of knowledge about public opinion and physical environment. Once connected with their location information, this kind of Volunteered Geographic Information provides new opportunities for geographical analysis. User generated content submitted...
Geospatial Data provided by different organizations may have various geospatial Coordinate Reference Systems (CRS), which usually need to be converted into the same CRS for integrated analysis and display. Geospatial coordinate transformation functions are now commonly available in most GIS software. However, the transformation function in these software systems can only work in its proprietary environment...
A new generation of information infrastructure, Cyberinfrastructure, is being developed to support the next generation of geoscientific research. Constructing distributed and complex geo-processing workflows is an important activity in Cyberinfrastructure. As more and more scientists use geo-processing workflow or service chains to integrate various distributed data and services to perform geoscientific...
Nowadays, there are large volumes of geospatial data archived at globally distributed locations. And more and more Web-based geospatial information services are developed for analyzing and managing geospatial data. In order to share and process geospatial information quickly and conveniently, this paper proposes a geospatial data and services sharing framework based on Web portal technologies, Web...
Geospatial data is playing an increasingly important role in many areas. But there are still many problems associated with the effective use of geospatial data. One is that geospatial data is usually large in volume and is archived at geographically distributed data centers. Another is that the low-level geospatial data contains raw data instead of information that can be directly applied by users...
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