Order flow basics: the beginner course
The heatmap: the order book's memory
The liquidity heatmap fixes the DOM's great weakness: its lack of memory. It records the order book continuously and draws it over time. The vertical axis is price, the horizontal axis is time; at each price and each instant, a color shows the quantity of limit orders that were waiting. A colored horizontal band is therefore a level where liquidity stayed posted, and its length tells you for how long.
It is DeepDom's central tool. It does not show what traded, but what was waiting: the intentions, before price tests them. Combined with the execution bubbles, it lets you see, live, aggression meeting liquidity.
The rest of this lesson is for students
- Reading the official capture
- The colors
- The scale recalibrates
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