# CurvePoint

class pyqtgraph.CurvePoint(curve, index=0, pos=None, rotate=True)

  A GraphicsItem that sets its location to a point on a PlotCurveItem. Also rotates to be tangent to the curve. The position along the curve is a Qt property, and thus can be easily animated.

  Note: This class does not display anything; see CurveArrow for an applied example

  __init__(curve, index=0, pos=None, rotate=True)

    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.

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