Re: Congrid problem

[Jaco van Gorkom <j.c.van.gorkom(at)fz-juelich.de>]

Craig Markwardt wrote:
> 
> Jonathan Joseph <jj21@cornell.edu> writes:
> 
> > I'm running IDL 5.3 on HP-UX and seeing the following
> > problem with congrid.  I have a byte image that has large areas
> > of a particular solid color (a background color).
> > I rescale the image to be larger using congrid with the
> > /interp flag set.  My nice solid areas of the background color,
> > which I would still expect to see unspoiled, now have artifacts
> > in them with value background_color - 1.  This looks like a
> > bug.  What's going on?
> >
> > Here's an example that show's the problem:
> ... deleted ...
> 
> Your example doesn't have the artifact on Linux on IDL 5.2 and IDL
> 5.3.  It sounds like a bug under HP-UX.
> 
...

I can reproduce the problem on SunOS 2.7, running IDL 5.3 on a Sparc
CPU.

  Jaco