On Wed, 2006-01-03 at 16:17 -0500, Ian Turton wrote: > For anyone who might not have seen this on the OGC list.
[cut] > > The geographic bounding box and transformation accuracy data were > added in prior version 6.8 to assist the selection of transformation > variant. Between any pair of coordinate reference systems, many > transformations may exist. The primary criteria for determining which, > if any, of the variants is most appropriate for use is given in text > comment within the Scope, Area of Use, and Remarks fields. These > free-form text fields are difficult for computer software to analyze. > The geographic bounding box values may be used to exclude variants > from consideration. The transformation accuracy values may be used to > rank variants. Further comment on using these data is given in > Guidance Note 7 part 1 – Use of the EPSG Geodetic Parameter Dataset. > If this means what I think it does, this is great news. It will make it possible for geotools to choose the "best" transform when multiple ones are available (constrained to the ones we have implemented). One day I will find time to look at this stuff again (stupid masters thesis...). Thank you for forwarding this Ian. Rueben ------------------------------------------------------- This SF.Net email is sponsored by xPML, a groundbreaking scripting language that extends applications into web and mobile media. Attend the live webcast and join the prime developer group breaking into this new coding territory! http://sel.as-us.falkag.net/sel?cmd=lnk&kid0944&bid$1720&dat1642 _______________________________________________ Geotools-devel mailing list Geotools-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/geotools-devel
