差别

这里会显示出您选择的修订版和当前版本之间的差别。

--- linux:gnuplot [2024/01/18 17:15] – 创建 pengge
+++ linux:gnuplot [2024/01/18 18:41] (当前版本) – [demo01] pengge
@@ 行 1: / 行 1: @@
 ====== gnuplot 在终端绘图 ======
 ===== ASCII 终端绘图 =====
@@ 行 7: / 行 8: @@
 set term dumb
 plot sin(x)
+q
 </code>
+  * 数据文件 ''test.csv''
+<code>
+145
+156
+178
+189
+199
+203
+</code>
+  * 绘图命令
+<code bash>
+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
+</code>
+  * 直接执行命令绘图
+<code bash>
+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";'
+</code>
+===== gnuplot 常用命令 =====
+<code bash>
+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
+</code>
+===== gnuplot 编写脚本 =====
+==== demo01 ====
+  * 脚本文件 ''demo01.plt''
+<code>
+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！"
+</code>
+  * 数据文件 ''data01.txt''
+<code>
+0.2893 0.3061
+0.3636 0.2857
+0.2562 0.2041
+0.1983 0.1633
+0.4463 0.5714
+0.6033 0.5714
+0.9008 0.8571
+0.2727 0.5714
+0.7355 0.8367
+0.1322 0.1837
+</code>
+  * 绘制命令
+<code bash>
+gnuplot demo01.plt
+</code>
+==== demo02 ====
+  * 脚本文件 ''demo02.plt''
+<code>
+# 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!"
+</code>
+  * 数据文件 ''data02.txt''
+<code>
+时间  pos1  pos2
+	0.4824	0.4845
+	0.5941	0.5876
+	0.8882	0.9175
+	0.3588	0.7423
+	0.7647	0.6186
+	0.1471	0.1546
+</code>
+  * 绘制命令
+<code bash>
+gnuplot demo02.plt
+</code>