gnuplot : plotting data from multiple input files in a single graph

Question

我正在尝试使用 gnuplot 绘制图表。我有六个文本文件。每个文本文件包含两列。第一列表示以秒为单位的时间( float )。第二个是序列号。我想在单个图表中绘制所有六个文件的时间与序列号的图表。我正在使用这个文件来做到这一点。

set terminal png
set output 'akamai.png'

set xdata time
set timefmt "%S"
set xlabel "time"

set autoscale

set ylabel "highest seq number"
set format y "%s"

set title "seq number over time"
set key reverse Left outside
set grid

set style data linespoints

plot "print_1012720" using 1:2 title "Flow 1", \
plot "print_1058167" using 1:2 title "Flow 2", \
plot "print_193548"  using 1:2 title "Flow 3", \ 
plot "print_401125"  using 1:2 title "Flow 4", \
plot "print_401275"  using 1:2 title "Flow 5", \
plot "print_401276"  using 1:2 title "Flow 6"

我的文件在哪里:

• print_1012720
• print_1058167
• print_193548
• print_401125
• print_401275
• print_401276

它给出了一个奇怪的错误，如下所示:

"plot.plt", line 24: undefined variable: plot

我做错了什么吗？是否可以在同一个图表中绘制来自不同文件的输入数据？

Answer 1

你已经很接近了!

改变

plot "print_1012720" using 1:2 title "Flow 1", \
plot "print_1058167" using 1:2 title "Flow 2", \
plot "print_193548"  using 1:2 title "Flow 3", \ 
plot "print_401125"  using 1:2 title "Flow 4", \
plot "print_401275"  using 1:2 title "Flow 5", \
plot "print_401276"  using 1:2 title "Flow 6"

至

plot "print_1012720" using 1:2 title "Flow 1", \
     "print_1058167" using 1:2 title "Flow 2", \
     "print_193548"  using 1:2 title "Flow 3", \ 
     "print_401125"  using 1:2 title "Flow 4", \
     "print_401275"  using 1:2 title "Flow 5", \
     "print_401276"  using 1:2 title "Flow 6"

出现该错误是因为 gnuplot 试图将单词“plot”解释为要绘图的文件名，但您尚未将任何字符串分配给名为“plot”的变量(这很好 - 这会非常令人困惑)。