ZLEMA not using any EMA

[LucCADORET]

The ZLEMA function seems to only return the transformed data (before handling it to the ema method) but doesn't actually perform the EMA on the data.

The method code is:

       lag = (period - 1) / 2
        return pd.Series(
            (ohlc["close"] + (ohlc["close"].diff(lag))),
            name="{0} period ZLEMA.".format(period),
        )

Which doesn't include any EMA i.e. it is missing the last step in the ZLEMA pseudocode: https://en.wikipedia.org/wiki/Zero_lag_exponential_moving_average

[peerchemist]

You are right, resolved with eabc47e