__init__(self, Q, X, Y, U, label, *, angle=0, coordinates='axes', color=None, labelsep=0.1, labelpos='N', labelcolor=None, fontproperties=None, **kw)
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.
A .Quiver
object as returned by a call to :None:None:`~.Axes.quiver()`.
The location of the key.
The length of the key.
The key label (e.g., length and units of the key).
The angle of the key arrow, in degrees anti-clockwise from the x-axis.
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.
Overrides face and edge colors from Q.
Position the label above, below, to the right, to the left of the arrow, respectively.
Distance in inches between the arrow and the label.
Label color.
A dictionary with keyword arguments accepted by the ~matplotlib.font_manager.FontProperties
initializer: family, style, variant, size, weight.
Any additional keyword arguments are used to override vector properties taken from Q.
Add a key to a quiver plot.
Hover to see nodes names; edges to Self not shown, Caped at 50 nodes.
Using a canvas is more power efficient and can get hundred of nodes ; but does not allow hyperlinks; , arrows or text (beyond on hover)
SVG is more flexible but power hungry; and does not scale well to 50 + nodes.
All aboves nodes referred to, (or are referred from) current nodes; Edges from Self to other have been omitted (or all nodes would be connected to the central node "self" which is not useful). Nodes are colored by the library they belong to, and scaled with the number of references pointing them