Learning Tableau 2019 - Third Edition

Bar charts

Here is a simple bar chart, similar to the one we built in Chapter 1, Taking Off with Tableau:

This bar chart makes it easy to compare the number of patient visits between various departments in the hospital. As a dimension, Department slices the data according to each distinct value such as ER, ICU, or Cardiology. It creates a header for these values because it is discrete (blue). As a measure, Number of Patient Visits gives the sum of patient visits for each department. Because it is a continuous (green) field, it defines an axis, and bars are rendered to visualize the value.

Notice that the bar chart is sorted by the department ...