Tableau: How to Make Spark Lines
Updated: May 14, 2021
Spark lines are often used in Tableau to show a large amount of date in a small area. They are tiny line charts that are added to the right of a chart to show more detail.
Build a bar chart using category, subcategory and sum([Sales]). Duplicate the sheet.
Add month([Date]) to columns. Move sum([Sales]) to rows. This will create separate line charts.
Right click the axis, and select Edit. Change the range to “Independent axis ranges”
Hide the axis, and all other headers.
Use both sheets in a dashboard. Hide all titles, and fit entire view.