Sunburned Surveyor a écrit : > [1] Is there any documentation on the GeoTools code that deals with map > projections and spatial reference systems?
There is some documentation there: http://docs.codehaus.org/display/GEOTOOLS/Spatial+referencing There is some demos there: http://svn.geotools.org/geotools/trunk/gt/demo/referencing/src/main/java/org/geotools/demo/referencing/ > [2] What is in the " org.opengis" packages referenced to in the GeoTools > Javadoc, and how is this code related to GeoTools? GeoAPI is an OpenGeospatial (http://www.opengeospatial.org/) working group. They were formely named "OpenGIS", abbreviated OGC. The main purpose of OGC is to create a set of specifications for geospatial informations. The goal is to achieve interoperability between different GIS vendor. OGC work together with ISO, and some OGC specifications are actually join OGC / ISO specifications. On spatial reference systems, I suggest that you go to this page: http://www.opengeospatial.org/standards/as and download "Topic 2 - Spatial Referencing by Coordinates". This is the ISO 19111 specification, which Geotools tries to implement through GeoAPI. GeoAPI (http://geoapi.sourceforge.net/) is a project that try to translate OGC / ISO specifications into Java interfaces. GeoAPI do not provides any implementation, only interfaces. This is somewhat similar to JDBC in J2SE. Geotools is a partial GeoAPI implementation. So the Geotools referencing module is an implementation of "org.opengis.referencing". If you code only against GeoAPI interfaces, in theory you could switch implementation with minimal effort. An other partial GeoAPI implementation (less advanced than Geotools however) is JScience (http://www.jscience.org/). Martin ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Geotools-gt2-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
