(trying to catch up on email)

Alan W. Irwin writes:
 > Once -ori 0, -ori 1, -ori 2, etc., work, then for fun try -ori 0.3 (i.e.,
 > non-integer -ori values).  You will find a long-standing PLplot bug for that
 > case which doesn't give correct plotted results (the rectangular viewport
 > gets sheared into a parallogram) for non-integer -ori values if the aspect
 > ratio is different from unity. Since the problem disappears for a unity
 > aspect ratio, I think the x length is being taken rather then the
 > appropriate y length or vice versa somewhere deep in the rotation code. But
 > nobody has ever been able to track down the incorrect logic (which is, of
 > course, a very low priority since integer -ori values are the ones that tend
 > to be used).

Right.  When I wrote the driver interface orientation code, I originally held
orientation to integer values.  But then I realized, why not have some fun and
make it more general.  The shear problem showed up right away, and having
(over) filled my capacity for "fun" projects at the time :), I left it at that.

-- 
Maurice LeBrun


-------------------------------------------------------------------------
This SF.net email is sponsored by: Splunk Inc.
Still grepping through log files to find problems?  Stop.
Now Search log events and configuration files using AJAX and a browser.
Download your FREE copy of Splunk now >>  http://get.splunk.com/
_______________________________________________
Plplot-devel mailing list
Plplot-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/plplot-devel

Reply via email to