Cross-hatching issue under pdfcairo in gnuplot 4.4 patchlevel 0

[Eric W. <way...@gm...>]

Hello,

When creating a rowstacked histogram in gnuplot 4.4 patchlevel 0 under
the pdfcairo terminal, I get a very ugly result compared to the
postscript eps terminal. Specifically, the cross-hatching patterns
look thick and ugly. I have attached the example output
"election.pdf."

Code:

set datafile separator ","
set out "election.pdf"
set term pdfcairo font "IPAMincho"
set title "日本語のフォントが使えます" font "IPAPMincho"
set xlabel "X軸" font "IPAPMincho"
set ylabel "Y軸" font "IPAPMincho"
set style histogram rowstacked
set style data histogram
plot 'election.csv' using 2 fs pattern 0 lt -1, \
           '' using 3 fs pattern 1 lt -1, \
           '' using 4 fs pattern 2 lt -1

Data:

# Year, Red, Green, Blue
1990,   33,  45,    18
1991,   35,  42,    19
1992,   34,  44,    14
1993,   37,  43,    25
1994,   47,  15,    30
1995,   41,  14,    32
1996,   42,  20,    35
1997,   39,  21,    31

Is there a way to make the patterns look more like they do under postscript eps?

-- Eric Wayman