pracma: quiver – R documentation

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quiver

Quiver or Velocity Plot

A quiver plot displays velocity vectors as arrows with components (u,v) at the points (x,y).

quiver(x, y, u, v,
           scale = 0.05, angle = 10, length = 0.1, ...)

`x, y`	x,y-coordinates of start points of the arrows.
`u, v`	x,y-coordinates of start points.
`scale`	scales the length of the arrows.
`angle`	angle between shaft and edge of the arrows.
`length`	length of the arrow edges.
`...`	more options presented to the `arrows` primitive.

The matrices x, y, u, v must all be the same size and contain corresponding position and velocity components. However, x and y can also be vectors.

Opens a graph window and plots the velocity vectors.