我正在使用Perl脚本解析一些天气数据，然后利用gnuplot在3行2列的显示中绘制这些数据。除了最后一个图表“累积降雨量”之外，我的所有图表似乎都正常工作。实际上，该图表绘制得正确，但是y轴的比例似乎使用了“分钟降雨量”图表的设置。有人可以查看我的gnuplot代码并看到我可能出了什么问题吗？谢谢任何帮助。
set terminal wxt size 1500,750
set size ratio 0.25
set multiplot layout 3,2 title "Weather Data at Fort Worth Alliance Airport For 10/26/2013"
set title "Temperature/Dewpoint"
unset key
set xdata time
set timefmt "%H:%M"
set xrange ["00:00" : "24:00"]
set xtics "00:00" , "02:00" , "24:00"
set xlabel "Time of Day"
set ylabel "Temperature/Dewpoint (° F)"
set autoscale y
set grid
set format x "%H:%M"
set format y "%5.1f"
set style data lines
plot "output2.dat" using 1:3 title 'Temperature',\
"output2.dat" using 1:4 title 'Dewpoint'
set title "Barometric Pressure"
unset key
set xdata time
set timefmt "%H:%M"
set xrange ["00:00" : "24:00"]
set xtics "00:00" , "02:00" , "24:00"
set xlabel "Time of Day"
set ylabel "Pressure (in Hg)"
set autoscale y
set grid
set format x "%H:%M"
set format y "%5.2f"
set style data lines
plot "output2.dat" using 1:2 title 'Pressure' lt -1
set title "Peak Wind Speed"
unset key
set xdata time
set timefmt "%H:%M"
set xrange ["00:00" : "24:00"]
set xtics "00:00" , "02:00" , "24:00"
set xlabel "Time of Day"
set ylabel "Wind Speed (kt)"
set autoscale y
set yrange [0:*]
set grid
set format x "%H:%M"
set format y "%5.0f"
set style data lines
plot "output1.dat" using 1:3 title 'Peak Wind Speed' lt 3
set title "Surface Visibility"
unset key
set xdata time
set timefmt "%H:%M"
set xrange ["00:00" : "24:00"]
set xtics "00:00" , "02:00" , "24:00"
set xlabel "Time of Day"
set ylabel "Visibility (SM)"
set yrange [0:10]
set ytics "0" , "1" , "10"
set grid
set format x "%H:%M"
set format y "%4.0f"
set style data lines
plot "output1.dat" using 1:2 title 'Surface Visibility' lt rgb "goldenrod"
set title "One Minute Rainfall"
unset key
set xdata time
set timefmt "%H:%M"
set xrange ["00:00" : "24:00"]
set xtics "00:00" , "02:00" , "24:00"
set xlabel "Time of Day"
set ylabel "Rainfall (in)"
set autoscale y
set yrange [0:0.25]
set ytics "0" , "0.05" , "0.25"
set grid
set format x "%H:%M"
set format y "%4.2f"
set style data lines
plot "output2.dat" using 1:5 title 'One Minute Rainfall' lt rgb "green"
set title "Accumulated Rainfall"
unset key
set xdata time
set timefmt "%H:%M"
set xrange ["00:00" : "24:00"]
set xtics "00:00" , "02:00" , "24:00"
set xlabel "Time of Day"
set ylabel "Rainfall (in)"
set autoscale y
set yrange [0:*]
set grid
set format x "%H:%M"
set format y "%5.2f"
set style data lines
plot "output2.dat" using 1:6 title 'Accumulated Daily Rainfall' lt rgb "green"
unset multiplot
Output1.dat 示例
19:00 0.82 28
19:01 0.48 28
19:02 0.41 30
19:03 0.41 29
19:04 0.29 32
19:05 0.24 31
19:06 0.27 25
19:07 0.32 21
19:08 0.47 17
19:09 0.56 15
19:10 0.73 13
Output2.dat样例
19:00 29.327 60 59 0.07 0.47
19:01 29.331 60 59 0.10 0.57
19:02 29.338 59 58 0.09 0.66
19:03 29.345 59 58 0.10 0.76
19:04 29.348 59 58 0.11 0.87
19:05 29.350 57 57 0.12 0.99
19:06 29.350 57 57 0.11 1.10
19:07 29.349 57 56 0.09 1.19
19:08 29.350 57 57 0.07 1.26
19:09 29.355 57 56 0.08 1.34
19:10 29.362 57 56 0.05 1.39