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3d web-mapping three-dimensional web-mapping viewers using avirtual globe to portray the world have helped to popularise gis,transforming a flat 2d world into a more stimulating experience forthe general public. along with faster computers, their success hasbeen greatly helped by the broadening availability of broadband,helping faster data streaming. viewers like nasa world wind havehelped to highlight and demonstrate the importance of ogc standardsin building sdis. however, there is a need for viewers to fullysupport these standards. as the existing features of the currentwave of 3d web-mapping products are strengthened, it is importantto look at their future evolution. support for metadata is veryimportant. how often does a user ask how old is this satelliteimage of my city? true 3d support is also required. the ocean isnot a surface but a volumetric space. for example, to bettervisualise and interpret a volumetric hydrodynamic model, slicingand profiling tools are needed. the wish list for new features isprobably endless. however, it is the marketplace that willdetermine the additional functionality that is actually realised..vector supportsupport for importing vector data into world wind iscurrently limited. for example, vector objects such as polygons arenot rendered directly but instead rasterised and rendered as atexture.
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