def absolute(requestContext, seriesList):
    """
    Takes one metric or a wildcard seriesList and applies the mathematical abs
    function to each datapoint transforming it to its absolute value.

    Example::

        &target=absolute(Server.instance01.threads.busy)
        &target=absolute(Server.instance*.threads.busy)
    """
    for series in seriesList:
        series.name = "absolute(%s)" % (series.name)
        series.pathExpression = series.name
        for i, value in enumerate(series):
            series[i] = safeAbs(value)
    return seriesList
Takes one metric or a wildcard seriesList and applies the mathematical abs
    function to each datapoint transforming it to its absolute value.

    Example::

        &target=absolute(Server.instance01.threads.busy)
        &target=absolute(Server.instance*.threads.busy)