def postpro_fisher(data, report=None):
    """
    Performs fisher transform on everything in data.

    If report variable is passed, this is added to the report.
    """
    if not report:
        report = {}
    # Due to rounding errors
    data[data < -0.99999999999999] = -1
    data[data > 0.99999999999999] = 1
    fisher_data = 0.5 * np.log((1 + data) / (1 - data))
    report['fisher'] = {}
    report['fisher']['performed'] = 'yes'
    #report['fisher']['diagonal'] = 'zeroed'
    return fisher_data, report
Performs fisher transform on everything in data.

    If report variable is passed, this is added to the report.