The 2D vectors style draws a vector from (x,y) to (x+xdelta,y+ydelta). The 3D vectors style is similar, but requires six columns of basic data. A small arrowhead is drawn at the end of each vector.
4 columns: x y xdelta ydelta 6 columns: x y z xdelta ydelta zdelta
In both cases, an additional input column (5th in 2D, 7th in 3D) may be used to provide variable (per-datapoint) color information. (see `linecolor` and `rgbcolor variable`).
splot with vectors is supported only for `set mapping cartesian`.
The keywords "with vectors" may be followed by an in-line 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
See `arrowstyle` for more details.
Example:
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
`set clip one` and `set clip two` affect vectors drawn in 2D. Please see `set clip` and `arrowstyle`.