VTD-XML Home
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Getting Involved
Since inception, VTD-XML project
team has received numerous valuable inputs from open source developers.
Below is a partial list of people that have provided suggestions to the project.
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James Lee
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Derek Modarski
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Lance Lavandowska
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James Player
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Mark Wonsil
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Tatu Saloranta
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Michael Wohlwend
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Scooter Willis
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Shuangqin Zhang
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Chao Qian
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S.L. Harrington
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Thorsten Liebig
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Tony Yin
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Angel Figueroa
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John Kraal
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Mark Swanson
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Frank Walinski
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Olusola Fadero
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Rodrigo Cunha
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Paul Tomsic
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Max Rahder
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Duane May
Like the concept of VTD-XML? Have a
good idea extending it? Let us know.
Sub-Project: GeoXPath
This module focuses on
extending XPath implementation to support geospatial operations on
GML. The essential approach is
appending some geometry types and geospatial operators, and the definitions
of them will refer to relative OGC specifications, such as GML, SFS, etc.
Operators to be
implemented fall into the following three categories:
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Basic geospatial
operators, such as dimension, geometrytype, srid, envelope, astext, asbinary;
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Geospatial relationship
predicates, such as equals, disjoint, intersects, touches, crosses, within,
contains, overlap;
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Geospatial analysis
operators, such as distance, buffer, convexhull, intersection, union,
difference, symdifference.
These operators are
conforming to OGC SFS specification.
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