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Map Root Inport Signal Data

To import, visualize, and map signal and bus data to root-level input ports, use the Root Inport Mapper tool or the getRootInportMap function. At the top level of a model or referenced model, root-level input ports include:

  • Inport blocks

  • Enable blocks

  • Trigger blocks

Root-level input ports import data from the MATLAB® workspace based on the value of the Configuration Parameters > Data Import/Export > Input parameter.

Root-level inport mapping imports signal data in a way that meets most modeling requirements and maintains model flexibility. You can:

  • Test your model with signals from the workspace and use your model as a referenced model in a larger context without any modification.

  • Update the Input parameter based on the signal data you import and map to root-level inports.

  • Visually inspect signal data without loading all the data into MATLAB memory.


To determine whether another data import technique meets your specific modeling requirements (such as the amount of data or the storage location) better, see Comparison of Signal Loading Techniques.

Open the Root Inport Mapper Tool

Use either of these approaches to open the Root Inport Mapper tool:

  • In the Configuration Parameters > Data Import/Export pane, click Connect Inputs.

  • In the block parameters dialog box for the Inport block, select Connect Inputs.

Command-Line Interface

You can use the getRootInportMap to create a custom object to map signals to root-level input ports and getSlRootInportMap to create a custom mapping mode. For more information, see Create and Use Custom Map Modes.

Import and Mapping Workflow

  1. Identify and possibly create signal data to import and map.

  2. Import and inspect signal data.

  3. Map the imported signal data. For example, you can map the signal data by block path or signal name.

  4. Simulate the model using the mapped data. After associating a scenario with the model, you can generate scripts for simulation with scenarios to perform batch simulations.

  5. Optionally, save the current Root Inport Mapper scenario for future reference or to share with other people.


To extend the Root Inport Mapper tool map modes, you can create a custom mapping file function to map data to root-level inports.

Choose a Map Mode

To specify how you want the Root Inport Mapper tool to map the signal data to a model, select from these map modes in the MAP TO MODEL section of the toolbar or the context menu:

  • Block name — Connect signal data to ports based the name of a root-level input port block.

  • Block path — Connect signal data to ports based the path of a root-level input port block.

  • Signal name — Connect signal data to ports based on the name of the signal on a port.

  • Port order — Connect sequential port numbers to the imported data.

  • Custom — Connect signal data to ports based on the definitions in a custom mapping file.

Each supported input format supports one or more mapping modes. To import MATLAB timeseries data, for example, you use any mapping mode. To import data array signal data, use the port order mapping mode.

See Also


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