问题
I have some measured data, experiment.dat which goes like this:
1 2
2 3
Now I want to plot them via some command line
plot "experiment.dat" using 1:2 title "experiment" with lines lw 3
Is there some way how to scale the different lines with some scaling factor like -1?
回答1:
Yes, you can do any kind of calculations inside the using statement. To scale the y-value (the second column) with -1, use
plot "experiment.dat" using 1:(-1*$2)
来源：https://stackoverflow.com/questions/19583526/scale-measurement-data