Download E-books Tile-Based Geospatial Information Systems: Principles and Practices PDF

By John T. Sample

Tile-based mapping structures have grown to develop into the dominant kind of mapping process with the increase of Web-based mapping instruments. The beginning of this ebook is a wish to gather all our discoveries, suggestions, and top practices for making a til- mapping approach into one mixed quantity. The cause of this article is to supply a accomplished consultant to the idea at the back of making a tiled-map procedure in addition to a realistic advisor to create a concrete implementation. Stennis area middle, MS John pattern may possibly 2010 Elias Ioup vii Acknowledgements The authors want to thank the Naval study Laboratory’s Base application, application aspect quantity 0602435N, for sponsoring this learn. also, the next humans supplied technical information with out which this booklet shouldn't have been attainable: Perry Beason, Frank McCreedy, Norm Schoenhardt, Brett Hode, Bruce Lin, Annie Holladay, Juliette Ioup, and Hillary Mesick. ix Contents 1 advent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1. 1 historical past of Web-Based Mapping functions . . . . . . . . . . . . . . . 1 1. 2 homes of tile-based mapping structures . . . . . . . . . . . . . . . . . . . . . . . 2 1. three publication association . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2 Logical Tile Schemes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . five 2. 1 advent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . five 2. 2 international Logical Tile Scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2. three Blue Marble instance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2. four Mercator-Based Schema . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . eleven 2. five Variable commence Tile Schemes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 2. 6 Standardized Schema . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 three Tiled Mapping consumers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 three. 1 Tile Calculation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 three. 1. 1 Discrete Map Scales . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 three. 1. 2 non-stop Map Scales . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 three. 2 Tile Retrieval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 three. 2. 1 neighborhood Tile garage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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