MATLAB Analysis App

Use MATLAB Analysis to explore the data stored in ThingSpeak™ channels. Then use TimeControl to trigger your code at specific times or React app to trigger when a set condition is met. The app provides templates with sample code that you can use to perform analysis such as:

• Calculate average humidity

• Calculate dew point

• Convert Celsius to Fahrenheit

• Eliminate data outliers

• Replace missing values in data

Analyze data from your ThingSpeak channel using MATLAB^® functions and toolboxes in Access MATLAB Add-On Toolboxes. After analysis, you can write data to a channel or create a visualization as described in MATLAB Visualizations App.

Analyze Data with MATLAB

1. Click Apps > MATLAB Analysis.

2. Click New to get started with your code.

3. Select a template or an example with sample code that you can run.

4. Click Create.

MATLAB Analysis Settings

• Name: Enter a name for your analysis. Press enter, or click outside the name box anytime you change the name, and the stored name of your analysis is automatically updated.

• MATLAB Code: Enter custom code, or modify the sample code with your data.

• Save and Run: Click to save and execute the code.

• Save: Click to save your analysis without running the code. An asterisk on this button indicates unsaved changes.

• Output: This field displays the output of your code. Use it to debug and modify the code.

• Clear Output: Click to clear the code output.

• Schedule Actions: Select an action to schedule using this MATLAB code.

  • Receive notification of MATLAB analysis failure by email

  • Schedule your code to run at specified times.

  • Schedule your code to run when channel data meets a predefined condition.

• Delete: Click to delete the analysis.

• My Channels: Click this tab to see information about your saved channels, including:

  • Channel name

  • Channel ID

  • Write and Read API Keys

  • Channel fields

• Documentation: Click this tab for help using the MATLAB Analysis app

• New Channel: Click to create a new channel to hold the values of your analyzed data.

New to MATLAB?

• Watch Getting Started with MATLAB video tutorial.

• Learn interactively at MATLAB Academy.

Limitations

• The MATLAB Analysis app does not support figure generation, so you cannot generate any plots with this app.

• Data written to ThingSpeak channels in MATLAB analysis must adhere to the posting rate limitations. You could lose data if you try to write to a channel multiple times within the period allowed by your license.