Introduction
Parameter actions let you change a parameter value by clicking or hovering on a mark in your view. This helps make dashboards interactive without complex controls.
When you want users to select a value by clicking on a chart element instead of using dropdown menus
When you want to highlight or filter data dynamically based on user clicks
When you want to create interactive what-if analysis with easy controls
When you want to switch between different measures or dimensions on a dashboard
When you want to update calculations or reference lines based on user input from the visualization