Gnuplot添加任意秒列到日期/時間列

Question

我很難過。我有一個秒列（在文件開始0秒）的CSV文件，另一列與日期（mm/dd/yyyy hh:mm）與以下列包含數據。我正在繪製25 Hz的數據（絞車張力，支出），因此hh:mm對於繪圖不夠精確，但我希望X軸仍然有mm/dd/yyyy hh:mm。

我想不出一個優雅的方式來將日期列添加到日期/時間列，而沒有包含兩個x軸標籤。任何幫助？

這裏是我的數據的幾行：

0.2340004,6/3/2016 20:09:09,384.0,0.0,3.4,1083.0,54.0,21.8,67.0,0.0,-0.1,,,,,, 
0.2808005,6/3/2016 20:09:09,389.0,0.0,3.4,1110.0,54.0,21.9,67.0,0.0,-0.1,,,,,, 
0.3276006,6/3/2016 20:09:10,397.0,0.0,3.4,1129.0,54.0,21.9,67.0,0.0,-0.1,,,,,, 
0.3744007,6/3/2016 20:09:10,398.0,0.0,3.4,1149.0,54.0,21.9,67.0,0.0,-0.1,,,,,, 

和代碼：

set datafile separator "," 
set terminal wxt 0 
set grid 
set ls 1 lc rgb "blue" 
set ls 2 lc rgb "green" 
set ls 3 lc rgb "red" 
set ytics nomirror 
set y2tics nomirror 
set xdata time 
set timefmt "%m/%d/%Y %H:%M" 
set format x "%m/%d/%y\n%H:%M" 
set xtics rotate by -270 
set key outside above left vert Right\ 
noreverse enhanced autotitle box 
set ylabel "Tension (lbs)" 
set y2label "Wire Out (meters)" 
set yrange [-300:2200] #change to set y range 
set y2range [0:*] #change to set y range 

plot 'WinchDAC-6-4-2016 07-38-56#3.csv' skip 11 using 2:9 w l t 'CTD Winch Tension' ls 1 axes x1y1,\ 
'' skip 11 using 2:11 w l t 'Wire Out' ls 2 axes x1y2,\ 
(x = 2000) axes x1y1 t 'SWL 0.032" (2,000 lbs)' ls 3 

謝謝！

Answer 1

必須使用timecolumn函數來分析從所述第二列中的時間數據（因爲內部參考日期的結果以秒爲單位），然後從第一塔中添加秒：

set datafile separator "," 
set xdata time 
set timefmt "%m/%d/%Y %H:%M" 
set format x "%m/%d/%y\n%H:%M" 

file = 'WinchDAC-6-4-2016 07-38-56#3.csv' 
plot file skip 11 using (timecolumn(2) + $1):9