[Scribus] HalfTone for Scribus doc ?

[stu seven]

+    Im looking to produce a HalfTone, from a JPG, for inclusion
in a Scribus doc.  What Im wondering is what is out there... for
Linux it has to be... which can produce Halftone image ?

+  This could not be "the printing company can do it" solution... no
money for them(!)... and, obviously, not Photoshop.  However, if you
do know a good Linux halftoning program, please suggest !

PS - I'll recommend you NOT go searching though... I have been
all day without a result.

stu7seven at gmail.com