使用gnuplot绘图

使用gnuplot绘图

学习资料： http://www.ibm.com/developerworks/cn/linux/l-gnuplot/index.html

$ cat test.plt

set xdata time

set timefmt "%s"

set format x "%Y-%m-%d"

#select font from results of `fc-list -v | grep -e 'family:' -e 'file:' -e '[^a-z]lang:.*zh-cn' | grep -B3 zh-cn | grep family: | sort | uniq`

set terminal png font "WenQuanYi Micro Hei,12"

set output "test.png"

set title "统计分布图"

set xlabel "日期"

set ylabel "数量"

set xrange ["1136044800":"1375113600"]

set xtics rotate by 270

unset key

plot "test.dat" using 1:2 with linespoints

#pause -1

$ cat test.dat

1374163200      2122926

1374249600      1200677

1374336000      1321779

1374422400      1773135

1374508800      1610589

1374595200      1454929

1374681600      1167954

1374768000      825804

1374854400      369708

1374940800      208934

$ eog test.png


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