Hi Frank, RFC-5 was just today called to my attention. I think it's great that this is being (has been) addressed. Two closely related issues (I think) are these:
A. How are polygon vertices joined? 1) By straight lines in the projection, or 2) as great-circle arcs? Can this be specified in the mapfile? If not, it would be great to have a LAYER-level parameter, something like JOINVERTICES=greatcircle or JOINVERTICES=straightline. The GMT program "psxy" offers such a choice (the -A option). B. When making a selection in the mapserver viewport (via jbox, for example), only the corner coordinates of that box get converted back to the coordinate system of the data, which means that what is selected can be very different from what you see. I wrote about this before. See http://spot.colorado.edu/~braup/MapServer/ for an example of polar weirdness. Has this issue made it to the bug list? I can do that if you guide me on how. Best regards, Bruce 2005/10/21, Frank Warmerdam <[EMAIL PROTECTED]>: > Folks, > > I have committed the changes in MapServer CVS for the > RFC 5 reprojection changes for over the horizon features. > I have also prepared a short web page demonstrating what > was done that might be of some interest. > > http://home.gdal.org/~warmerda/reproject/ > > I would also like to thank TMC Technologies for their financial > support of this effort. > > Best regards, > -- > ---------------------------------------+-------------------------------------- > I set the clouds in motion - turn up | Frank Warmerdam, [EMAIL PROTECTED] > light and sound - activate the windows | http://pobox.com/~warmerdam > and watch the world go round - Rush | Geospatial Programmer for Rent > -- Bruce Raup http://cires.colorado.edu/~braup/
