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保存 gnuplot 图而不显示图

tag-icon • tag-icon gnuplot
保存 gnuplot 图而不显示图

我有一个数据文件 (data.txt)。我可以使用 gnup 命令绘制数据。例如；

gnup -p data.txt -xl 'Hours' -yl 'Data (m)'

执行上述命令后，我需要保存绘图（例如 png 格式），但不绘制数据。可以吗？

答案1

gnuplot有一个set output命令，我用它来保存我的情节的副本：

#!/bin/bash 
# Run this script after synching the Palm with $HOME/Visor/.last

# Weight - extract my weight data fron the Visor, clean it
# up, and feed it to gnuplot

target=$HOME/Visor/var/Weight
visorhome="$HOME/Visor"
gnuplotdata="${target}.pltdata"
gnuplotout="${target}.ps"

# ... data prep omitted - data to plot is in $gnuplotdata 

gnuplot <<EOF
set title "Weight and running average, in kilograms, for Walt Sullivan"
set timefmt "%y/%m/%d"
set xdata time
set format x "%y/%m/%d"
plot "$gnuplotdata" using 1:2 with linespoints, "" using 1:3 with linespoints;
pause 10 "Plot will close in 10 seconds, see $gnuplotout"
set terminal postscript enhanced color landscape
set output "$gnuplotout"
replot
EOF

exit 0

要了解更多信息，请输入：

$ gnuplot
gnuplot> help set output
 By default, screens are displayed to the standard output. The `set output`
 command redirects the display to the specified file or device.
...

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