Question

我正在尝试从内联文件中绘制“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

gnuplot - 然而 - 抱怨第二部分没有数据。在重复数据时，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。我还试图省略第二个“文件”名称以再次使用最后一个文件。

有没有更好的方法再次使用相同的内联数据而不重复？

Answer 1

由于5.0版gnuplot有一个新的“命名数据块”结构（如heredoc），它允许您保存内联数据一次并按需使用它：

$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'

在gnuplot中使用多个单独图的内联数据

1 个答案: