For example, you can assign the Airport geographic role to a field that contains International Air Transport Association (IATA) codes. You can assign geographic roles to your fields based on the type of geographic data they contain. Many of the roles are international, but some are limited to the US only. The following table describes the geographic roles available in Tableau. If you double-click each of these fields, Tableau adds them to the Columns and Rows shelves and creates a map view using the Tableau background map. These fields contain latitude and longitude values and are assigned the Latitude and Longitude geographic roles. To the measures area of the Data pane: Latitude (generated) When you assign a geographic role to a field, Tableau adds two fields In the Data pane, click the data type icon next to the field, select Geographic Role, and then select the geographic role you want to assign to the field. In other words, Tableau geocodes the information in that field. When a field is assigned a geographic role, Tableau creates a map view when you add the field to Detail on the Marks card. For example, you can assign the City geographic role to a field that contains a list of city names. Assign a geographic role to a fieldĪssigning a geographic role based on the type of location (such as state versus postcode) helps ensure that your data is plotted correctly on your map view. When you assign a geographic role to a field, Tableau assigns latitude and longitude values to each location in your data based on data that is already built in to the Tableau map server. This article describes how to assign a geographic role to a field in Tableau so you can use it to create a map view.Ī geographic role associates each value in a field with a latitude and longitude value.
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