Get X and Y for fine plotting of a stick spectrum.
    Usage: X,Y = getStickXY(TableName).

def getStickXY(TableName):
    """
    Get X and Y for fine plotting of a stick spectrum.
    Usage: X,Y = getStickXY(TableName).
    """
    cent,intens = getColumns(TableName,('nu','sw'))
    n = len(cent)
    cent_ = zeros(n*3)
    intens_ = zeros(n*3)
    for i in range(n):
        intens_[3*i] = 0
        intens_[3*i+1] = intens[i]
        intens_[3*i+2] = 0
        cent_[(3*i):(3*i+3)] = cent[i]
    return cent_,intens_