Hi Paul, Yea, once you open the door on projection-on-the-fly, the use cases multiply like rabbits. We have to consider what implication reprojection has on the edit tools. I'm concerned about coordinate drift too. If you edit during projection-on-the-fly server access, you are forced to reproject back, aren't you?
regards, Larry On 6/26/07, Paul Austin <[EMAIL PROTECTED]> wrote: > Hi Larry, > > If you "open" a file or load records from the database I would typically > want the features to retain their original projection and reproject on > the fly when rendering them in a different projection. The reason for > this is to ensure you don't artificially create any coordinate drift > when you haven't actually modified the feature. My clients are always > worried about using different vendors algorithms for projection. > > If however you were to "import" files then you could argue that you want > to do the projection at that point. > > There maybe a case to have a cached reprojected version of the geometry > to speed up rendering. > > Or another alternative would be to give an option to either keep the > original geometry or reproject, then that keeps both types of users happy. > > I just thought of another argument to reproject on the fly, some kinds > of users may switch from one projection to another while using the data. > Paul > > Larry Becker wrote: > > I have a question about Coordinate Projection in JUMP. Does it happen > > when the dataset is opened (as with ArcMap)? If so, what happens when > > you save the dataset? Is it saved in the original projection (i.e. > > reprojected back) or is it saved with the new projection? I can see > > use cases for both. > > > > thanks, > > Larry > > > > On 6/26/07, Sunburned Surveyor <[EMAIL PROTECTED]> wrote: > > > >> Jody has offered to help if there is interest in prefecting/fixing the > >> code that Edgar wrote for Coordinate Projection using the GeoTools > >> library. > >> > >> I'd take this on myself but I have already made a lot of other commitments. > >> > >> If we have any takers I will let Jody know. This sounds like a great > >> opportunity to get projection support into OpenJUMP. > >> > >> SS > >> > >> ------------------------------------------------------------------------- > >> 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/ > >> _______________________________________________ > >> Jump-pilot-devel mailing list > >> Jump-pilot-devel@lists.sourceforge.net > >> https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel > >> > >> > > > > > > > > > ------------------------------------------------------------------------- > 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/ > _______________________________________________ > Jump-pilot-devel mailing list > Jump-pilot-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel > -- http://amusingprogrammer.blogspot.com/ ------------------------------------------------------------------------- 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/ _______________________________________________ Jump-pilot-devel mailing list Jump-pilot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel
