[Bioperl-l] need help making biographics tests

[Matthew Pocock]

Lincoln Stein wrote:
> Hi All,
> 
> There is an annoying problem with the bio::graphics module.  Depending
> on the combination of various versions of libgd, libfreetype and
> libpng that happen to be installed on the target system, bio::graphics
> will generate visually identically but binary different picture files.
> As a result, the first three regression tests fail when run on a
> different machine from which they were generated.

Would it work if you loaded the images back into memory and compared 
each pixle of the bitmap (within some threshold), or would compression 
artifacts make this impossible?

> Thanks much!
> 
> Lincoln
> 
>