3. Maps
Maps are one of the most popular visualizations that data journalists use with Tableau. In this section we will explore the fantastic opportunities that Tableau offers.
On the top menu, click on Map - Map Layers. Change the Background style to Normal and the Washout to 25%.
To make sure that your background does not compete with your layers, in Map Layers, uncheck Land Cover.
In the Data Layer section you will notice a great selection of Census data available to use. In the US Population by Race section, choose Hispanic or Latino Ancestry and leave the defaults. Notice the background of each state acquiring a color based on this field.
Close the Map Layers window.
Customizing the Tooltip
Notice the default tooltip when you hover over the point data. Click the Tooltip card, and remove the State label. Change the title for the value field to Immigrant Orphans Adopted in 2013. Click OK.
Move the legend for race to the right of your screen.
Your map should look something like this:
Adding Tableau Map Layers
In the Size card, increase the size of the symbols so they are more visible. You can also change the classification values by clicking on the SUM card, selecting the drop-down arrow, and click Edit sizes. Click Cancel to leave the defaults.
Go to the Color card, pick a color that you would like to use, change the transparency to 65% and add a white halo border.
States by adoptions and Hispanic populationWe want to explore a relationship between the number of adoptions in 2013 and the number of Hispanics living in that state.
Start a new sheet and name it Immigrant Adoptions. Add the State dimension to Columns and the field named Im Or ad 2013 Total to Rows.
Change the chart to symbol maps. Notice the change in the Columns and Rows cards.
