Technical Analysis › Chart Types

Chart Types

A chart type is a set of rules for turning the same trade data into marks on a screen, and every one of them discards something. Time-based charts hold the x-axis constant and let activity vary; price- and activity-based charts do the reverse. These guides give each type's construction rule and state plainly what it removes, because that omission is usually the reason to use it.

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Direct Answer

A chart type is a set of rules for turning the same trade data into marks on a screen, and every one of them discards something. Time-based charts hold the x-axis constant and let activity vary; price- and activity-based charts do the reverse. Changing chart type does not change the market, it changes what you can see of it, and what a given type removes is usually the reason to use it.

Does changing chart type change the market?

No, it changes what you can see of it. A Renko chart makes a trend obvious by deleting the sideways periods, which is useful right up until you need to know how long the move took or how much it retraced. Every chart type is a trade of one kind of visibility for another.

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