Use discrete axis for line, area, and scatter charts

By default, the PDI Data Explorer provides time and number dimensions in line, area, and scatter visualizations on a continuous scale axis. The continuous axis is helpful for identifying trends that occur over a period of time, such as financial growth, real estate sales, or test scores.

Prior to Pentaho version 8.1, line and area visualizations used a discrete axis, where the data points display evenly spaced across the axis. Additionally, the scatter visualization only accepted measures in its X-axis and Y-axis zones. However, if you prefer the Time and Number dimensions in Line and Area visualizations on a discrete axis, and to disable the Time and Number dimensions in Scatter visualizations, perform either or both of the following procedures to edit the global mapping configurations: