Re: Release critical or not? [was Re: strange box-offset]

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

On Sunday 16 July 2006 12:05 pm, Daniel J Sebald wrote:
> > the fundamental question is whether "width" should be interpreted
> > as "number of horizontal pixels" or "x_right - x_left".  These are not
> > the same number.  The former makes sense if you are thinking in terms of
> > terminal coords (pixels); the latter makes sense if you are thinking in 
> > terms of a continuous variable (plot x coordinate).
> 
> If you plot a series of rectangles to "cover" a range staying with 
> x_right - x_left avoids there being an overlap of one pixel.   

But then you have the discordance that if you simply draw the 
rectangle bounded by (x1,y1) (x2,y2) with vectors, the bottom and
left edges are part of the fill area, but the top and right edges
are not.  Isn't that the problem being observed - that the fill
area and the bounding lines do not agree?

-- 
Ethan A Merritt
Biomolecular Structure Center
University of Washington, Seattle 98195-7742