matplotlib.axes.Axes.quiverkey

Axes.quiverkey(Q, X, Y, U, label, **kwargs)

Add a key to a quiver plot.

The positioning of the key depends on X, Y, coordinates, and labelpos. If labelpos is 'N' or 'S', X, Y give the position of the middle of the key arrow. If labelpos is 'E', X, Y positions the head, and if labelpos is 'W', X, Y positions the tail; in either of these two cases, X, Y is somewhere in the middle of the arrow+label key object.

Parameters:

Qmatplotlib.quiver.Quiver

A Quiver object as returned by a call to quiver().

X, Yfloat

The location of the key.

Ufloat

The length of the key.

labelstr

The key label (e.g., length and units of the key).

anglefloat, default: 0

The angle of the key arrow, in degrees anti-clockwise from the x-axis.

coordinates{'axes', 'figure', 'data', 'inches'}, default: 'axes'

Coordinate system and units for X, Y: 'axes' and 'figure' are normalized coordinate systems with (0, 0) in the lower left and (1, 1) in the upper right; 'data' are the axes data coordinates (used for the locations of the vectors in the quiver plot itself); 'inches' is position in the figure in inches, with (0, 0) at the lower left corner.

colorcolor

Overrides face and edge colors from Q.

labelpos{'N', 'S', 'E', 'W'}

Position the label above, below, to the right, to the left of the arrow, respectively.

labelsepfloat, default: 0.1

Distance in inches between the arrow and the label.

labelcolorcolor, default: rcParams["text.color"] (default: 'black')

Label color.

fontpropertiesdict, optional

A dictionary with keyword arguments accepted by the FontProperties initializer: family, style, variant, size, weight.

**kwargs

Any additional keyword arguments are used to override vector properties taken from Q.

Examples using matplotlib.axes.Axes.quiverkey

Advanced quiver and quiverkey functions

Advanced quiver and quiverkey functions

Quiver Simple Demo

Quiver Simple Demo