Re: Bug in image code ?

[Ethan M. <merritt@u.washington.edu>]

On Thursday 18 August 2005 10:26 am, Daniel J Sebald wrote:
> 
> You agree that PostScript should be allowed to have negative numbers for 
> an image location then?  

The PostScript language itself allows negative numbers, if that's what you're
asking.  Whether the gnuplot core routines should ever send negative coordinates
to a terminal driver is a rather different question.

> (Or does PostScript always have a greater than zero offset for the origin of the plot area?)  

Zero offset is a legal origin.  The result of zero offset and negative coordinates
is probably device-dependent.  I do not recall ever seeing a printer either crash
or wrap around for this reason, but then again one doesn't normally construct such
cases on purpose.


-- 
Ethan A Merritt       merritt@u.washington.edu
Biomolecular Structure Center
Mailstop 357742
University of Washington, Seattle, WA 98195