Can gnuplot fetch plot data from remote locations (e.g. ftp servers)?

问题

Plotting a datafile with gnuplot works like

plot 'filename' using 1:2

Is it possible that 'filename' points to a remote location, e.g. http://example.com/data.txt or ftp://ftp.example.com/data.txt?

If so, does it work on Linux and Windows alike or are platform specific commands needed?

回答1:

No, you cannot directly open a file from a remote location via HTTP or FTP. You'll need to use a system-dependent command line program to fetch a data file on-the-fly, like the GET program. This is also used in the linkedaxes demo.

So in general, you'll have a command like

plot '< GET http://example.com/data.txt' using 1:2

来源：https://stackoverflow.com/questions/25593603/can-gnuplot-fetch-plot-data-from-remote-locations-e-g-ftp-servers