# ErrorBarItem

class `pyqtgraph.``ErrorBarItem`(**opts)
  `__init__`(**opts)

    All keyword arguments are passed to setData().

  `setData`(**opts)

    Update the data in the item. All arguments are optional.

    Valid keyword options are: x, y, height, width, top, bottom, left, right, beam, pen

    - x and y must be numpy arrays specifying the coordinates of data points.
    - height, width, top, bottom, left, right, and beam may be numpy arrays, single values, or None to disable. All values should be positive.
    - top, bottom, left, and right specify the lengths of bars extending in each direction.
    - If height is specified, it overrides top and bottom.
    - If width is specified, it overrides left and right.
    - beam specifies the width of the beam at the end of each bar.
    - pen may be any single argument accepted by pg.mkPen().

    This method was added in version 0.9.9. For prior versions, use setOpts.