def reducelabels(x, steps=10):
    """
    Insert an empty string in order to better visualize x labels
    :param x: list of x data
    :param steps: integer with the number of x values to visualize

    >>> x = [str(i) for i in range(0,10)]
    >>> reducelabels(x, steps=3)
    ['0', '', '', '3', '', '', '6', '', '', '9']
    """
    x_rep = ["" for i in range(0, len(x))]
    for i in range(0, len(x), round(len(x) / steps)):
        x_rep[i] = x[i]
    return x_rep