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my name is edward zhang in this video im going to argue that directional change is particularly good for handling tick-to-tick data this video assumes knowledge of directional change if youre not familiar with directional change you may refer to appendix a of this book or this video first let us look at how prices are summarized the time and price of every transaction in the market are recorded these are called take to take data it is important to note that transactions take place at irregular times in this artificial data set there are 9 transactions within one particular minute and no transaction within 2 minutes price movements are often summarized as time series the observers determine how often they want to take a sample one transaction is recorded per interval this example shows a minutely time series for the transactions shown directional change is a different way of summarizing price movements it records peaks and troughs in the market a data point is recorded when a signific
