Function typicalPrice

Typical price — (high + low + close) / 3. TA-Lib's TYPPRICE, matched bar-for-bar.

The one-number summary of a bar that the volume-weighted and money-flow studies price on: vwap weights it by volume, moneyFlowIndex splits it up/down, commodityChannelIndex measures its deviation and keltner's centre line is a moving average of it. This study appends it as a column, which is the point — those studies derive it privately, and a caller who wants to chart it, or to run another study over it (sma({ column: 'typicalPrice' })), needs it on the series.

Appends one column, default 'typicalPrice'. Reads high, low and close, each named by an option defaulting to its DEFAULT_OHLCV name — the atr shape.

Edges

• No warm-up. Every bar carries its own answer, so row 0 is defined. Length-preserving, trivially.
• Linear and shift-equivariant: scaling every price by k scales the output by k, and adding d to every price adds d to it — it is a weighted mean of prices, so it lives in the same units. Both pinned by property tests.
• A gap in any of the three costs exactly that bar and nothing else; there is no recursion and no window to carry it.
• Nothing is clamped or ordered. Redirect high and low at columns that cross and the mean is still their mean — a study cannot know which of its inputs the caller meant.