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VR Placeholder

Send unspecified value to Simulink 3D Animation block


Simulink® 3D Animation™

  • VR Placeholder block


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.

Data Type Support

A VR Placeholder block outputs signals of type double.


Output Width — Length of the vector containing placeholder signal values.

Introduced before R2006a