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* [Maps] 7.8 documenation updates * remove more uses for source * map settings * remove number of categories * review feedback * remove word 'cards' * clean up description of heatmap layer * Update docs/maps/map-settings.asciidoc Co-authored-by: gchaps <33642766+gchaps@users.noreply.github.com> Co-authored-by: Elastic Machine <elasticmachine@users.noreply.github.com> Co-authored-by: gchaps <33642766+gchaps@users.noreply.github.com>
16 lines
718 B
Plaintext
16 lines
718 B
Plaintext
[role="xpack"]
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[[heatmap-layer]]
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== Heat map layer
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Heat map layers cluster point data to show locations with higher densities.
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[role="screenshot"]
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image::maps/images/heatmap_layer.png[]
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To add a heat map layer to your map, click *Add layer*, then select the *Heat map* layer.
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The index must contain at least one field mapped as {ref}/geo-point.html[geo_point].
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NOTE: Only count, sum, unique count metric aggregations are available with the grid aggregation source and heat map layers.
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Average, min, and max are turned off because the heat map will blend nearby values.
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Blending two average values would make the cluster more prominent, even though it just might literally mean that these nearby areas are average.
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