On Feb 18, 2010, at 10:14 AM, Alan W. Irwin wrote: > On 2010-02-17 21:06-0800 David MacMahon wrote: > > Hi Dave: > > I left out your other questions because I am confused on those > issues as > well. However, assuming you get them figured out, I would > appreciate it if > you took some additional time to update the relevant docbook > documentation > to help relieve everybody's confusion on these matters. > >> Since "defined" does not have a corresponding "user data" pointer, it >> seems that whether a point is "defined" or not must be determinable >> solely from the x,y coordinates themselves and not from the 2D data >> values (or accompanying "data valid" flags array). Is the primary >> intent of this to limit the region that is shaded (kind if like >> kx,lx,ky,ly for plcont, but in world coordinates rather than 2D data >> indices)? > > I can help you out a bit with this one. There is an example of how > "defined" is used in the C version of example 16. And, FWIW, I > think we > should have adopted a more general API for "defined". However, I > guess > nobody cares too much about it because of its limitations. For > example, the > "defined" part of example 16 looks pretty good at normal resolution, > but you > get a real mess at lower resolutions. Thus, I don't think there is > any > language interface that currently propagates what C does with > "defined", and > I suggest you skip it for Ruby as well.
FWIW, the Ada bindings handle this and it is now working in Ada examples 16 after I repaired some errors in what was formerly commented-out code. But the Ada examples don't bother to parse the - exclude option so it is turned on and off by setting a boolean in the code. Jerry > > Alan ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Plplot-devel mailing list Plplot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/plplot-devel
