gnuplot a b 由資料作圖

之前作過的gnuplot
今天加了 希臘字母


#set terminal postscript  eps color enhanced"Helvetica" 20 #"paper small"
set terminal postscript  color enhanced"Helvetica" 20
set output "AG300pp.ps"
set grid
# set style data linespoints
set title "J=3.00"
set multiplot
# Figure 1

set yrange[52:64]

set xlabel"{/Symbol b}"
set ylabel"A B C G"
plot "App300" using 1:2:3 with  yerrorbars ti "A" lt 1 pt 1
replot "Bpp300" using 1:2:3 with  yerrorbars ti "B" lt 2 pt 2
replot "Cpp300" using 1:2:3 with  yerrorbars ti "C" lt 3 pt 3
replot "Gpp300" using 1:2:3 with  yerrorbars ti "G" lt 4 pt 4
unset multiplot

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ref
http://ontublog.blogspot.tw/2009/09/greek-letters-in-gnuplot.html