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Data files

Custom name for data files

Model Configuration Pane: Code Generation / Code Placement


Specify customized name for generated data files.


This parameter:

  • Appears only for ERT-based targets.

  • Requires Embedded Coder® when generating code.

  • Compact (with separate data file) option for File packaging format enables this parameter.


$R_data (default) | macro text

Default: $R_data

Enter a macro that specifies whether, and in what order, certain text is to be included in the generated identifier. The macro can include a combination of custom user text and these format tokens:


Insert root model name into identifier, replacing unsupported characters with the underscore (_) character.

Required for model referencing.


Insert text that you specify for the $U token. To specify this text, use the Custom token text parameter.

Custom naming is supported only for .c and .cpp files. When you have model hierarchy, custom naming is applicable to only the root model.

Recommended Settings

DebuggingNo impact
TraceabilityUse default
EfficiencyNo impact
Safety precautionNo recommendation

Programmatic Use

Parameter: ERTDataFileRootName
Type: character vector
Value: Valid combination of tokens and custom text
Default: $R_data

Version History

Introduced in R2018a