set style data histograms
plot "< echo a 2 && echo b 4 && echo c 3" u 2:xtic(1)
plot "< echo a 7 && echo b 5" u 2:xtic(1)
Note the letter "c" in the bottom right corner of the second plot. It
should not be there. It shows up if there is more data on the first
histogram than on the second one.
A workaround:
set style data histograms
plot "< echo a 2 && echo b 4 && echo c 3" u 2:xtic(1)
reset
set style data histograms
plot "< echo a 7 && echo b 5" u 2:xtic(1)
--
-- JNR
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