VIZ IN TOOLTIP

The dual‐axis map from the previous section tried to cram a lot of information into one chart. In this section, let's try a more gentle way of introducing more information to a map. You will add a second chart to the tooltips that will be seen when you hover over individual marks on the map.

This feature, called Viz in Tooltip, is not restricted to maps, but it is particularly useful with maps. It allows you to hold back information that is perhaps only relevant at a second glance. A good example would be a symbol map showing overall sales revenue and a tooltip showing how it breaks down by product categories and how it has changed over time.

Step 1: Create the Second Chart

Let's create this visualization using the Superstore data set. Start by creating the chart that will be shown in the tooltip. In this case, you want it to be a line chart.

Open a new worksheet, call it Over Time, and then add the following fields to the view: Sales to Rows, Order Date...