4 columns: x y xdelta ydelta 6 columns: x y z xdelta ydelta zdelta
The keywords "with vectors" may be followed by an inline arrow style specifications, a reference to a predefined arrow style, or a request to read the index of the desired arrow style for each vector from a separate column. Note: If you choose "arrowstyle variable" it will fill in all arrow properties at the time the corresponding vector is drawn; you cannot mix this keyword with other line or arrow style qualifiers in the plot command.
plot ... with vectors filled heads plot ... with vectors arrowstyle 3 plot ... using 1:2:3:4:5 with vectors arrowstyle variable
plot 'file.dat' using 1:2:3:4 with vectors head filled lt 2 splot 'file.dat' using 1:2:3:(1):(1):(1) with vectors filled head lw 2
Copyright 1986 - 1993, 1998, 2004 Thomas Williams, Colin Kelley
Distributed under the gnuplot license (rights to distribute modified versions are withheld).