It would be nice to have an introductory book - it can be something I could use in some of the classes I teach. Are you planning to have a section on 'Applications'? Looking at some of the diverse examples of how people use PostGIS, maybe people on this list (and others) can contribute towards a chapter or so.
To answer your questions: 1) How you use PostGIS? We use it extensively in a web-based environmental health surveillance system. We've embedded kernel density estimation methods and some environmental models in a PostGIS-based system that allows users, who may not be experts in GIS and spatial analysis (say public health officials), to create and analyze spatial patterns of disease outcomes, measure exposures to environmental contaminants, and visualize some of these data using technologies like Google Earth. > 2) What you find useful about it over anything else? Ability to efficiently handle large datasets. Ability to create a user-friendly interface where complex analysis tasks are embedded within web-based, automated routines. Ties in well with other WebGIS infrastructure. > 3) Why you think there should be any book written focused on its use and of > course if such a thing were to exist, would you buy it? > I would buy it, and possibly use it for teaching GIS programming, WebGIS classes at the undergraduate (possibly graduate) level. Chetan -- Chetan Tiwari, PhD Assistant Professor University of North Texas Department of Geography 1155 Union Circle #305279 Denton, TX 76203-5017
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