对gnuplot中的多个单独绘图使用内联数据

我试图从内联文件中绘制“x；y1；y2”数据：

set xdata time
set timefmt "%Y-%m-%dT%H:%M:%S"
set format x "%H:%M:%S"
set datafile separator ";"
set yrange [0:]
plot '-' index 0 using 1:2 with linespoints t 'before', '-' index 0 using 1:3 with linespoints t 'after'
2015-11-05T00:42:32;0.690000;0.690000
2015-11-05T00:43:34;0.690000;0.690000
2015-11-05T00:44:35;0.690000;0.690000
2015-11-05T00:45:36;0.690000;0.690000
2015-11-05T00:46:37;0.690000;0.690000
2015-11-05T00:47:38;0.690000;0.690000
2015-11-05T00:48:38;0.690000;0.690000
2015-11-05T00:49:40;0.690000;0.690000
e

然而，gnuplot抱怨第二部分没有数据。在重复数据时，例如

set xdata time
set timefmt "%Y-%m-%dT%H:%M:%S"
set format x "%H:%M:%S"
set datafile separator ";"
set yrange [0:]
plot '-' index 0 using 1:2 with linespoints t 'before', '-' index 0 using 1:3 with linespoints t 'after'
2015-11-05T00:42:32;0.690000;0.690000
2015-11-05T00:43:34;0.690000;0.690000
2015-11-05T00:44:35;0.690000;0.690000
2015-11-05T00:45:36;0.690000;0.690000
2015-11-05T00:46:37;0.690000;0.690000
2015-11-05T00:47:38;0.690000;0.690000
2015-11-05T00:48:38;0.690000;0.690000
2015-11-05T00:49:40;0.690000;0.690000
e
2015-11-05T00:42:32;0.690000;0.690000
2015-11-05T00:43:34;0.690000;0.690000
2015-11-05T00:44:35;0.690000;0.690000
2015-11-05T00:45:36;0.690000;0.690000
2015-11-05T00:46:37;0.690000;0.690000
2015-11-05T00:47:38;0.690000;0.690000
2015-11-05T00:48:38;0.690000;0.690000
2015-11-05T00:49:40;0.690000;0.690000
e

我希望，

index 0

选择了正确的数据集。 我还试图省去第二个“文件”名，以便再次使用最后一个文件

---

有没有更好的方法可以在不重复的情况下再次使用相同的内联数据？

因为5.0版gnuplot有一个新的“命名数据块”结构（如heredoc），允许您保存一次内联数据，并根据需要经常使用它：

$data <<EOD
2015-11-05T00:42:32;0.690000;0.690000
2015-11-05T00:43:34;0.690000;0.690000
2015-11-05T00:44:35;0.690000;0.690000
2015-11-05T00:45:36;0.690000;0.690000
2015-11-05T00:46:37;0.690000;0.690000
2015-11-05T00:47:38;0.690000;0.690000
2015-11-05T00:48:38;0.690000;0.690000
2015-11-05T00:49:40;0.690000;0.690000
EOD

set xdata time
set timefmt "%Y-%m-%dT%H:%M:%S"
set format x "%H:%M:%S"
set datafile separator ";"
set yrange [0:]
set style data linespoints
plot $data using 1:2 t 'before', '' using 1:3 t 'after'

---

$data由于5.0版gnuplot有一个新的“命名数据块”结构（如herdoc），允许您保存一次内联数据，并根据需要经常使用它：

$data <<EOD
2015-11-05T00:42:32;0.690000;0.690000
2015-11-05T00:43:34;0.690000;0.690000
2015-11-05T00:44:35;0.690000;0.690000
2015-11-05T00:45:36;0.690000;0.690000
2015-11-05T00:46:37;0.690000;0.690000
2015-11-05T00:47:38;0.690000;0.690000
2015-11-05T00:48:38;0.690000;0.690000
2015-11-05T00:49:40;0.690000;0.690000
EOD

set xdata time
set timefmt "%Y-%m-%dT%H:%M:%S"
set format x "%H:%M:%S"
set datafile separator ";"
set yrange [0:]
set style data linespoints
plot $data using 1:2 t 'before', '' using 1:3 t 'after'

$data