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Proceedings of the third IFIP WG2.6 working conference on Visual database systems 3 (VDB-3)
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Proceedings of the third IFIP WG2.6 working conference on Visual database systems 3 (VDB-3)
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CHI 98 Cconference Summary on Human Factors in Computing Systems
A visual tool for querying geographic databases
AVI '00 Proceedings of the working conference on Advanced visual interfaces
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Usability Engineering
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Principles of Visual Programming Systems
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User Centered System Design; New Perspectives on Human-Computer Interaction
Perceiving Spatial Relationships in Computer-Generated Images
IEEE Computer Graphics and Applications
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IEEE Transactions on Knowledge and Data Engineering
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IEEE Transactions on Knowledge and Data Engineering
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SSD '99 Proceedings of the 6th International Symposium on Advances in Spatial Databases
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DEXA '98 Proceedings of the 9th International Conference on Database and Expert Systems Applications
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ICCSA'13 Proceedings of the 13th international conference on Computational Science and Its Applications - Volume 1
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The main goal of this work is to provide an advanced visual environment where users that are not skilled for what concerns the computer science domain may compose queries related to those geographical phenomena for which the third dimension is a relevant feature. Visual queries are composed in a 3D environment accessible from the web where the users manipulate geographical objects, called 3D geometaphors. The geometaphors represent the operands of an underlying algebra characterized by a set of topological, directional and metrical operators; such operators are expressed in the query environment in terms of visual relationships between the geographical objects. The introduction of the third dimension for querying the geographical databases has challenged the authors with a number of important issues related to the area of visualization, navigation and object manipulation. According to the principles of usability engineering, the authors have built different prototypes based on a client-server architecture that have been iteratively evaluated by experts and final users in order to discover drawbacks and to improve the quality of the proposal. The result is a coordinated user-friendly 3D visual metaphor for querying GIS on the web, where all the elements needed for composing a query have a visual, easy to understand, counterpart.