explain me splunk heatmap usages?

[mahendra559]

why we are using heatmap
what are the usages
any apps and add-ons to this

any example queries

[woodcock]

There are two heatmap examples in the Dashboard Examples App:
https://splunkbase.splunk.com/app/1603/

[to4kawa]

Heat Map Viz app
https://splunkbase.splunk.com/app/4460/

see @rob_jordan comment
https://answers.splunk.com/answers/529004/is-there-a-way-to-display-more-than-20-charts-at-a.html

Not Splunk, but useful usage
https://www.r-graph-gallery.com/heatmap

For example:
try apps.