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VR Placeholder

(To be removed) Send unspecified value to Simulink 3D Animation block

VR Placeholder will be removed in a future release. For more information, see Version History.

  • VR Placeholder block

Simulink 3D Animation


The VR Placeholder block sends out a special value that is interpreted as “unspecified” by the VR Sink block. When this value appears on the VR Sink input, whether as a single value or as an element of a vector, the appropriate value in the virtual world stays unchanged. Use this block to change only one value from a larger vector. For example, use this block to change just one coordinate from a 3-D position.

The value output by the VR Placeholder block should not be modified before being used in other VR blocks.

To open the Block Parameters dialog box, double-click the block.



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Output signal returned as unspecified, that drives the virtual reality visualization.

Data Types: double


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Length of the vector containing placeholder signal values.

Version History

Introduced before R2006a

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R2023b: To be removed

The VR Placeholder will be removed in a future release. Instead, use sim3d classes and Simulation 3D blocks to interface MATLAB® and Simulink® with the Unreal Engine® 3D simulation environment. To get started, see Create 3D Simulations in Unreal Engine Environment.