Find Change Points

Find abrupt changes in data in the Live Editor

Description

The Find Change Points task lets you interactively find abrupt changes in the mean, variance, or slope and intercept of data. The task automatically generates MATLAB^® code for your live script.

Using this task, you can:

• Specify the change point type and locate the change points from data in a workspace variable.

• Adjust the number of detected change points.

• Automatically visualize change point locations and the segments of data between them.

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Open the Task

To add the Find Change Points task to a live script in the MATLAB Live Editor:

• On the Live Editor tab, click Task and select the Find Change Points icon .

• In a code block in the live script, type a relevant keyword, such as change or find. Select Find Change Points from the suggested command completions.

Examples

• Add Interactive Tasks to a Live Script
• Clean Messy Data and Locate Extrema Using Live Editor Tasks

Version History

Introduced in R2019b

R2022a: Live Editor task does not run automatically if inputs have more than 1 million elements

Behavior changed in R2022a

This Live Editor task does not run automatically if the inputs have more than 1 million elements. In previous releases, the task always ran automatically for inputs of any size. If the inputs have a large number of elements, then the code generated by this task can take a noticeable amount of time to run (more than a few seconds).

When a task does not run automatically, the Autorun icon is disabled.

• To run a task manually, on the Live Editor tab, click the Run Section button.

• To enable running the section automatically, click the Autorun icon. The icon updates to display the enabled state.