The reason your two plots move relative to each other is that there are two plots, instead of one. "multiplot" is not the right tool for this job. don't find a solution to hide the second. The second ... what?
gnuplot datafiles have never been capable of holding complex numbers, so it's no surprise that neither the $ operator nor the column() function can read complex numbers. I think this qualifies not as a bug, but as a feature request.
gnuplot datafiles have never been capable of holding complex numbers, so it's no surprise that neither $ nor the column() function can read complex numbers. I think this qualifies not as a but, but as a feature request.
Getting the values wouldn't really help with that idea, either --- and you shouldn't even have to get those from anywhere, as they're already fully under your control if you choose them to be. You would need the generated label strings, more precisely their width as displayed on-screen. Depending on what your output device is, that information may be hard to come by, or even impossible. So in the end, you're almost certainly better off forward-controlling what goes onto the plot, instead of trying...
Is there a way to get the tic labels? I think you'll have to explain more precisely what it is you're trying to "get" there.
A note: we would usually prefer that you start your own discussion instead of hijacking someone else's... The separator between the columns is a "". Not really. It's either a comma, or a double quote, then a comma, then another double quote, depending on which way one looks it. gnulot won't just ignore all those " characters while trying to read numeric input (including timefmt data), so you'll have to put those into all your input formats --- or convince the application that created this file not...
Believe it or not, but the plot you got is 100% correct for the data and commands you gave gnuplot to display. You asked for a line connecting all the datapoints, but you have 30 datapoints in sequence at the same x coordinate. What other than a vertical line (multiply overpainted) did you expect to get from that? If you want a different plot, you'll have to tell gnuplot what else it's supposed to do. I think you're looking for "help smooth unique".
Build failure with MacOS ncurses --- TERMINFO, again