# quiver

Quiver or vector plot

## Syntax

## Description

`quiver(`

plots arrows with directional components `X`

,`Y`

,`U`

,`V`

)`U`

and `V`

at the Cartesian coordinates specified by `X`

and
`Y`

. For example, the first arrow originates from the point
`X(1)`

and `Y(1)`

, extends horizontally according to
`U(1)`

, and extends vertically according to `V(1)`

. By
default, the `quiver`

function scales the arrow lengths so that they do
not overlap.

`quiver(`

plots
arrows with directional components specified by `U`

,`V`

)`U`

and
`V`

at equally spaced points.

If

`U`

and`V`

are vectors, then the*x*-coordinates of the arrows range from 1 to the number of elements in`U`

and`V`

, and the*y*-coordinates are all 1.If

`U`

and`V`

are matrices, then the*x*-coordinates of the arrows range from 1 to the number of columns in`U`

and`V`

, and the*y*-coordinates of the arrows range from 1 to the number of rows in`U`

and`V`

.

`quiver(___,`

adjusts the
length of arrows:`scale`

)

When

`scale`

is a positive number, the`quiver`

function automatically adjusts the lengths of arrows so they do not overlap, then stretches them by a factor of`scale`

. For example, a`scale`

of 2 doubles the length of arrows, and a`scale`

of 0.5 halves the length of arrows.When

`scale`

is`'off'`

or`0`

, such as`quiver(X,Y,U,V,'off')`

, then automatic scaling is disabled.

`quiver(___,`

fills the markers specified by `LineSpec`

,`'filled'`

)`LineSpec`

.

`quiver(___,`

specifies
quiver properties using one or more name-value pair arguments. For a list of properties,
see Quiver Properties. Specify name-value pair
arguments after all other input arguments. Name-value pair arguments apply to all of the
arrows in the quiver plot.`Name,Value`

)

`q = quiver(___)`

returns a `Quiver`

object. This object is useful for controlling the properties of the quiver plot after
creating it.

## Examples

## Input Arguments

## Tips

To create a quiver plot using polar coordinates, first convert them to Cartesian
coordinates using the `pol2cart`

function.

## Extended Capabilities

**Introduced before R2006a**