我想用x数据作为时间值绘制数据.
csv文件如下所示
"","12/09/29","00:19:43"," 1787"," 12","12"
"","12/09/29","00:19:48"," 1787"," 12","12"
"","12/09/29","00:19:53"," 1785"," 13","12"
"","12/09/29","00:19:58"," 1785"," 12","12"
这里的问题是使用双引号.我试过这个
set timefmt '"%y/%m/%d","%H:%M:%S"'
set datafile separator ","
plot 'myFile.csv' using 2:3:4 with lines
但它不承认时间格式.
如何通过双引号和逗号分隔符识别两个分隔列的时间值?
谢谢您的帮助.
托马斯
最佳答案 如果引号是问题,并且您在启用了管道的posix系统上,则可以轻松删除它们:
plot '< sed -e s/\"//g test.dat' using 2:4:5
请注意,使用规范也已更改(2:4:5而不是2:3:4),因为您的timeformat需要2列.
请注意,我不认为引号有问题:
set datafile sep ','
set xdata time
set timefmt '%y/%m/%d,%H:%M:%S' #no quotes in timefmt -- Gnuplot removes them when parsing the datafile.
plot 'test.dat' using 2:4:5 with lines
适合我.
所以我真的认为问题是你的使用规范指向第三列(包含时间信息)而不是第四列.最后,您可以使用2:4制作相同的图 – 您实际上从未在这里使用第5列.