[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] RE: Are people really using Identity constraints specif ied in
As to complexity, a key to success is being able to use the same map to solve different problems and to be able to use different maps with the same information to accomplish different tasks or to focus on different aspects of the same task. 1. Route maps show highways, locations and assets relative to a location in real time. Used for dispatch. 2. Pin maps show locations, highways, and assets relative to an incident type and perhaps a person of interest. Used for crime analysis. 3. Thematic maps show assets, locations, persons of interest, etc., relative to a related theme. Think jail cells, who is in them, and what is the relationship of the persons in them (eg, gang members). Used for asset management. 4. Full visualizations of real locations and assets are often used for scenario simulation and mission planning (think 3D with a real time interface). The Planet9 eScene application is an example. Note the relative costs for creating and maintaining each of these maps as evaluated by the need for real time information vs non-real-time analysis and planning. These maps or representations can share the same data sources and that is where the backend server design and message design are paramount. Tufte has thoughts about which of these are appropriate for some given task. Eliminate everything that isn't relevant information. My advice is also to learn the value of outliers given clustered representations. len From: Joshua Allen [mailto:joshuaa@m...] > Some background: a public safety system can be seen as > multiple information ecosystems and technologies that > exchange information to prevent crime, solve crime, and Yes, people thinking about "systems" often tend to think in terms of a big machine, and deemphasize the characteristics of a dynamic system of interacting pieces. The various and incompatible methods used to hook all of this stuff together, and the combinatorial complexity leads to some interesting situations. The complexity comes in at the interconnections....
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