Shift the series When window is negative, shift the past period to current. Fill the gap with the first data available. When

wraps a pandas DataFrame to StockDataFrame :param df: pandas DataFrame :param index_column: the name of the index column, default to ``date``

Compute rolling sum with min_periods=1 using numpy.

drop column by the name multiple names can be supplied in a list :return: StockDataFrame

Mean Absolute Deviation :param series: Series :param window: number of periods :return: Series

wave trand 1 n1: period of EMA on typical price n2: period of EMA

if the input is a `DataFrame`, convert it to this class. :param index_column: name of the index column, default to `date` :param valu

Relative Vigor Index (RVGI) The Relative Vigor Index (RVI) is a momentum indicator used in technical analysis that measures the stren

drop n rows from the beginning :return: StockDataFrame

drop n rows from the tail :return: StockDataFrame

Linear Weighted Moving Average (WMA) using vectorized NumPy. Returns 0 for first window-1 positions.

Inertia Indicator https://theforexgeek.com/inertia-indicator/ In financial markets, the concept of inertia was given by Donald Dorse

Know Sure Thing (kst) https://www.investopedia.com/terms/k/know-sure-thing-kst.asp The Know Sure Thing (KST) is a momentum oscillato

Pretty Good Oscillator (PGO) https://library.tradingtechnologies.com/trade/chrt-ti-pretty-good-oscillator.html The Pretty Good Oscil

Psychological Line (PSL) The Psychological Line indicator is the ratio of the number of rising periods over the total number of perio

initialize all stats. in the handler

convert a StockDataFrame back to a pandas DataFrame

override the method in pandas, omit the check This patch is not the perfect way but could make the lib work.

get awesome oscillator The AO indicator is a good indicator for measuring the market dynamics, it reflects specific changes in the dr

Aroon Oscillator The Aroon Oscillator measures the strength of a trend and the likelihood that it will continue. The default

Average True Range The average true range is an N-day smoothed moving average (SMMA) of the true range values. Default to 14 periods

Get Bollinger bands. boll_ub means the upper band of the Bollinger bands boll_lb means the lower band of the Bollinger bands

get balance of power The Balance of Power indicator measures the strength of the bulls. https://school.stockcharts.com/doku.php?id=te

get the count of column in range (shifts) example: change_20_c :return: result series

Commodity Channel Index CCI = (Typical Price - 20-period SMA of TP) / (.015 x Mean Deviation) * when amount is not available: