Wide PNG's displaying only coloured stripes?

Scott Rossi scott at tactilemedia.com
Mon Feb 5 15:27:15 EST 2007

Recently, David Bovill wrote:

> With the graphing application I have a problem i do not understand. With
> smaller graphs everything is OK, but with large or rather wide graphs they
> do not dislay correctly - I get coloured bands.
> Has anyone else seen this - I do not think jpegs or other formats work much
> better - they display fine in Preview on OSX?

Can you post a screenshot somewhere, or an example stack?  One thing that
can happen is if you have shallow gradient spanning a large distance, there
may not be a wide enough range of colors to render the gradient smoothly,
and the result is a banding effect.


Scott Rossi
Creative Director
Tactile Media, Multimedia & Design
E: scott at tactilemedia.com
W: http://www.tactilemedia.com

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