This is probably a postscript/pdf question, but I’ll try anyway.
I produce histograms with hatched style and save them as eps. Then I convert the eps file to pdf with ‘epstopdf’.
The problem is that in the pdf the hatch style is hardly visible. It is rendered as light gray. It is not only a problem in the viewer (acroread) , but also on the printed page. The original eps is ok (printed, and onscreen as long as antialias is switched off in ghostview). Attached is a small macro which produces hatched histograms and saves them as eps file. Do others see the same behaviour? Is there some special switch which could enhance the produced postscript?
(I think the problem is already in the ps code, because the same problem appears when the eps is convert to jpg, png,…)
[Using root from CVS (yesterday), ghostscript 6.52 on RedHat 7.3]
histo.C (408 Bytes)