CurveArrow

class pyqtgraph.CurveArrow(curve, index=0, pos=None, **opts)[source]

Provides an arrow that points to any specific sample on a PlotCurveItem. Provides properties that can be animated.

__init__(curve, index=0, pos=None, **opts)[source]

Position can be set either as an index referring to the sample number or the position 0.0 - 1.0 If rotate is True, then the item rotates to match the tangent of the curve.