Football Heat Maps, What the Colours Actually Show
Before interpreting a hot area, establish whether the map shows touches, positions or a particular action.
A heat map summarises the distribution of data across the pitch. Stronger colours may represent more touches, time spent in a location or particular actions, depending on the provider. There is no single meaning for every map. FIFA's analysis of defensive actions uses spatial maps as part of a wider tactical explanation.
Read the title and legend first
A touch map does not record every off-ball run. A recovery map is not a complete account of a player's activity. Check the time window too: ten minutes after a position change cannot be compared directly with a whole match. Confirm the attacking direction, which a provider may standardise across the two halves.
Imagine a winger with a dense area near the touchline. That could reflect repeated receptions or time spent there if tracking positions are measured. Without the definition, you cannot know which interpretation applies.
Activity is not a performance grade
A busy area does not establish good decisions. Frequent receptions may occur where the opponent allows them. A player can also make a useful contribution by moving a defender without receiving. An empty zone is not automatically evidence of neglect; it may lie outside the player's responsibility.
Make comparisons in three steps
- Use the same provider, event type and colour scale.
- Compare similar minutes, roles and match situations.
- Return to selected video sequences to see what followed the recorded activity.
Separate time windows can reveal a role change hidden by the combined map. Use the visualisation to generate a question for viewing, rather than replace the sequence of play with one picture.
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