gnuplot 在终端绘图
ASCII 终端绘图
gnuplot
set term dumb
plot sin(x)
q
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gnuplot
gnuplot> set term dumb
Terminal type set to 'dumb'
Options are 'feed size 79, 24'
gnuplot> plot 'test.csv' u ($0):1 w lp t 'c1', 'test.csv' u ($0):2 w lp t 'c2'
gnuplot> q
gnuplot -e "set term dumb; plot 'test.csv';"
gnuplot -e 'set term dumb; plot "test.csv" u ($0):1 w lp t "c1", "test.csv" u ($0):2 w lp t "c2";'
gnuplot 常用命令
gnuplot> h plot # 查看帮助文档
gnuplot> set term dumb # 切换输出模式
gnuplot> !cat text2.csv # 执行 shell 命令
gnuplot> p x (绘制 y = x 函数)
gnuplot> plot [-pi:pi] sin(x) # 设置坐标
gnuplot> splot [-10:10] [-20:20] x**2+y # 绘制简单的三位函数图, 比如绘制z(x,y)=x2+y
gnuplot> plot sin(1.5 * x)
gnuplot> plot 'test.csv' title 'c1' # 设置图例名称
gnuplot> plot 'test.csv' using 1:2 # 选取数据列绘图
gnuplot> plot 'test.csv' with lines # 选择线条风格
gnuplot> plot 'test.csv' with linespoints
gnuplot> plot 'test.csv' with points
gnuplot> plot 'test.csv' using ($0):1, 'test.csv' using ($0):2 # 使用行号作为横轴
# 设置标题
gnuplot> set title 'Test Title'
gnuplot> set xlabel 'Times'
gnuplot> set ylabel 'Cost/ms'
gnuplot> set arrow 1 from 1,200 to 0.2,208 # 设置注释箭头
gnuplot> show arrow
set key at 2, 0.5 # 设置注释图例
set label "y=x" at 0, 208 # 设置注释文本
gnuplot 编写脚本
demo01
set encoding utf8
# set terminal pdfcairo enhanced size 4in,3in font "Times New Roman,12"
# set output "demo01.pdf"
set term dumb
set tics nomirror
set xtics norangelimit
set key box inside
set key at 2.5, 0.95
set xlabel 'time'
set ylabel 'velocity'
plot "data01.txt" using 1:2 with lines ls 1 lw 2 title "pos1", \
"" using 1:3 with linespoints ls 2 lw 1 pointtype 12 ps 1 title "pos2", \
replot
reset
print "Done!"
1 0.2893 0.3061
2 0.3636 0.2857
3 0.2562 0.2041
4 0.1983 0.1633
5 0.4463 0.5714
6 0.6033 0.5714
7 0.9008 0.8571
8 0.2727 0.5714
9 0.7355 0.8367
10 0.1322 0.1837
gnuplot demo01.plt
demo02
# set terminal pngcairo transparent enhanced font "arial,10" fontscale 1.0 size 600, 400
# set output 'histograms.2.png'
set encoding default
# set terminal emf size 800,600 font "Times New Roman,12"
# set output "pic2.emf"
set term dumb
set boxwidth 0.9 absolute
set style fill solid 1.00 border lt -1
set key inside right top vertical Right noreverse noenhanced autotitle nobox
set style histogram clustered gap 1 title textcolor lt -1
# set minussign
# set datafile missing '-'
set style data histograms
set xtics border in scale 0,0 nomirror rotate by -45 autojustify
set xtics norangelimit
set xtics ()
set xlabel '时间'
set ylabel '速度'
plot 'data02.txt' using 2:xtic(1) ti col , '' u 3 ti col
reset
print "Done!"
时间 pos1 pos2
1 0.4824 0.4845
2 0.5941 0.5876
3 0.8882 0.9175
4 0.3588 0.7423
5 0.7647 0.6186
6 0.1471 0.1546
gnuplot demo02.plt