Here is the project summary for GeoXPATH
GeoXPath module focuses on extending XPath implementation to support =
geospatial operations, it implements an geo-enabled XPath syntax by =
appending some geospatial operators to the core function library of =
XPath. One can use it to do geospatial query on GML.=20
The implementation and the definitions of augmented operators will refer =
to relative OGC specifications involving GML and SFS, and these =
operators fall into the following three categories:=20
a.. Basic geospatial operators, such as dimension, geometrytype, srid, =
envelope, astext, asbinary;=20
b.. Geospatial relationship predicates, such as equals, disjoint, =
intersects, touches, crosses, within, contains, overlap;=20
c.. Geospatial analysis operators, such as distance, buffer, =
convexhull, intersection, union, difference, symdifference.
----- Original Message -----=20
From: jie yan=20
To: vtd...@li...=20
Sent: Monday, June 11, 2007 8:40 PM
Subject: [Vtd-xml-users] GeoXPath subproject
Hi All,
The GeoXPath sub-project has been declared on VTD-XML website.
I'm just making first-phase preparations, to get familiar with JFlex =
and CUP, to understand existing XPath implementation of VTD-XML, to read =
GML and SFA specifications, to design the definitions of geo-related =
functions, for instance.=20
Now it's time to start design and development, and I will appreciate =
all your suggestions and comments.
Leon
-------------------------------------------------------------------------=
-----
=
-------------------------------------------------------------------------=
This SF.net email is sponsored by DB2 Express
Download DB2 Express C - the FREE version of DB2 express and take
control of your XML. No limits. Just data. Click to get it now.
http://sourceforge.net/powerbar/db2/
-------------------------------------------------------------------------=
-----
_______________________________________________
Vtd-xml-users mailing list
Vtd...@li...
https://lists.sourceforge.net/lists/listinfo/vtd-xml-users
|
