def prepareImageSignal(button, label, type_, col, row, x, y, xPixel, yPixel):
    """See Plot documentation for content of events"""
    return {'event': 'imageClicked', 'button': button, 'label': label,
        'type': type_, 'col': col, 'row': row, 'x': x, 'y': y, 'xpixel':
        xPixel, 'ypixel': yPixel}
