Programmatically converting PNG to TIFF

[Andreas Hoeschler]

Hi all,

Usually NSImage should be able to read PNG. I found a hint on the net 
that WindowMaker (libwrster) should be installed before configuring 
GNUstep to make it PNG aware. I tried that with no success. NSImage ist 
still not able to read PNG data.

I am now looking for an alternative approach. I have ImageMagick 
installed. Does anybody now how one can programmatically convert PNG 
data to TIFF data with ImageMagick so that I can provide NSImage with a 
TIFFrepresentation? I have the data in the database so a method reading 
from a file is not suitable.

Thanks a lot!

Regards,

   Andreas