def grace(data, xlab='', ylab='', title=''):
    """
	Input data is of the form, [ [x1,y1], [x2,y2],....] where x and y are vectors
	"""
    try:
        import pygrace
        pg = pygrace.grace()
        for xy in data:
            pg.plot(xy[0], xy[1])
            pg.hold(1)
        pg.xlabel(xlab)
        pg.ylabel(ylab)
        pg.title(title)
        return True
    except:
        return False
