Map charts have gotten even easier with geography data types. Each country is represented by a different color. ![]() In the following example, Countries by Category, the categories are displayed using a standard legend to show groups or affiliations. By default, the higher the value is, the darker its corresponding color will be. The color for each region is dictated by where along the spectrum its value falls. The values represent tax revenue in each country with each portrayed using a gradient spectrum of two colors. Categories are represented by different colors.įor example, the Countries by Tax Revenue % chart below uses values. Values are represented by slight variations of two to three colors. Theĭarker colors indicate locations with more pickups, and the lighter colors indicate locations with fewer pickups.Map charts can display both values and categories, and they each have different ways of displaying color. The marks update on the map to show the concentration of taxi pickups per location. On the Marks card, click the Mark Type drop-down and select Density.Drag a measure field, such as ID, to Detail on the Marks card.Note: Because Tableau is averaging the latitude and longitude of the data, there is only one mark on the canvas. From the Data pane, drag both Pickup Latitude and Pickup Longitude onto the canvas.(Click Download in the upper right hand corner) and open it in Tableau Desktop. To follow along with this example, download the heatmap_taxi_howto example workbook. To learn more about Heatmaps and find out how to create and customize them, see Create Heatmaps that Show Trends or Density in Tableau. Heatmaps are most effective when working with a data set containing many data points where there is substantial overlap between the marks on the map. Heatmaps, also known as Density Maps, help you identify locations with greater or fewer numbers of data points. The polygons on the map update to show the amount of sales using color. The map view updates to a filled (polygon) map.įrom the Orders table in the Data pane, drag Sales to Color on the Marks card. On the Marks card, click the Mark Type drop-down and select Map. The background map updates with the new settings. ![]()
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