field lines

[Judge_Dredd <the...@ma...>]

Hello. I want to plot field lines in 3d. I have googled and searched on the
list for the subject and found no satisfactory info so i assumed that
gnuplot isn't able to draw field lines. I wish to take a little part in dev
and have already read some of the relevant gnuplot source code. I found it
complicated to implement a standard algo for drawing field lines (it would
have been much easier if points were on a 3d grid, but a user can define
vectors which are placed randomly) to get a nice picture. It is not fully
clear to me how gnuplot determines validity of the input file and how it
plots a function (not a data file). Can I get help here in navigating in
source code?
I would like to thank all contributers. Gnuplot is a functional and easy to
use tool. 



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