def prepareHoverSignal(label, type_, posData, posPixel, draggable, selectable):
    """See Plot documentation for content of events"""
    return {'event': 'hover', 'label': label, 'type': type_, 'x': posData[0
        ], 'y': posData[1], 'xpixel': posPixel[0], 'ypixel': posPixel[1],
        'draggable': draggable, 'selectable': selectable}
