Synopsis:

\vector(x_run,y_rise){travel}

Draw a line ending in an arrow. The slope of that line is: it vertically rises `y_rise` for every horizontal `x_run`. The `travel` is the total horizontal change—it is not the length of the vector, it is the change in *x*. In the special case of vertical vectors, if (`x_run`,`y_rise`)=(0,1), then `travel` gives the change in *y*.

For an example see picture.

For elaboration on `x_run` and `y_rise` see \line. As there, the values of `x_run` and `y_rise` are limited. For `\vector`

you must chooses integers between -4 and 4, inclusive. Also, the two you choose must be relatively prime. Thus, `\vector(2,1){4}`

is acceptable but `\vector(4,2){4}`

is not (if you use the latter then you get a sequence of arrowheads).

© 2007–2018 Karl Berry

Public Domain Software

http://latexref.xyz/_005cvector.html