Tableau has extensive mapping capabilities with multiple configurations to represent data geographically. Being able to configure and use data point selection methods in maps is an essential skill for the Tableau developers and users. The three methods available in Tableau for selecting items include rectangular, lasso, and radial selection, each of which can be used for specific use cases. In this guide, you will learn how to configure selection methods, explore a dataset by selecting geographical areas or data points on maps, and relevant use cases for selection methods. For all map-based visuals, the view menu and search functionality are turned on by default in Tableau. They can be accessed by hovering on the map visual as shown below. If you want to turn the view toolbar on or off, click on Map in the top toolbar and then click on Map Options. A Map Options popup will appear with multiple check-boxes that can be used to turn on or off relevant features for the map as shown below. An individual mark can be selected on a map by clicking on the mark. In order to select multiple marks, hold the Control key on your keyboard and click on each mark you want to select. There are three other selection methods available In the view toolbar, including rectangular selection, lasso selection, and radial selection. This is the default selection method enabled in a Tableau map. It enables you to select multiple marks on a map through a rectangular projection. Multiple states have been selected in the symbol map below using rectangular selection. Radial selection is quite useful if want to select data points within a certain radius from a central data point or you want to select nearby data points in a circular manner. If you want to see the radius measurement while selecting, ensure that the metric option is enabled in the map options as shown below.
Next, select the radial selection option and zoom in to the required level for selecting the data points. For example, in the image below, the cities within a 35 km radius of Oklahoma City have been selected using radial selection. The lasso selection option enables you to select multiple marks by drawing a freehand projection over the map. It is quite useful if you want to select certain data points and avoid specific ones around them, as shown below. If the view menu is hidden or turned off, selection methods can still be used using the following keyboard shortcuts:
In this guide, you learned about various selection methods available in Tableau maps, their relevant use cases, and keyboard shortcuts for using them. To learn more about mapping capabilities in Tableau, check out this amazing course. To learn about zooming and panning in Tableau maps, refer to this guide.
2.Creating data visualizations with Tableau. Question 1 Fill in the blank: When using Tableau, people can control what data they see in a visualization. This is an example of Tableau being _____.
People being able to control what data they see is an example of Tableau being interactive. Question 2 A data analyst is using the Color tool in Tableau to apply a color scheme to a data visualization. They want the visualization to be accessible for people with color vision deficiencies, so they use a color scheme with lots of contrast. What does it mean to have contrast?
The data analyst makes sure the color scheme has contrast in order to make the visualization accessible for people with color vision deficiencies. Question 3 What could a data analyst do with the Lasso tool in Tableau?
A data analyst could use the Lasso tool to select a data point. Question 4 A data analyst is using the Pan tool in Tableau. What are they doing?
Question 5They are using the Pan tool to rotate the perspective while keeping a certain object in view. You are working with the World Happiness data in Tableau. To display the population of each country on the map, which Marks shelf tool do you use? To display the population of each country on the map, you use the Label property. Question 6 When working with the World Happiness data in Tableau, what could you use the Filter tool to do?
You could use the Filter tool to show only those countries with a World Happiness score of 3.5 or lower. Question 7 By default, all visualizations you create using Tableau Public are available to other users. What icon to you click to hide a visualization? To hide a visualization from other users, click the Eye icon. Question 8 Fill in the blank: In Tableau, a _____ palette displays two ranges of values. It uses a color to show the range where a data point is from and color intensity to show its magnitude.
In Tableau, a diverging palette displays two ranges of values. It uses a color to show the range where a data point is from and color intensity to show its magnitude.
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