### Description
This example creates three images of a square. Each square slightly overlaps the previous square. These three layers are then interpreted as the R, G, and B channel of an RGB image, by the use of vtkImageAppendComponents.

!!! note
    You MUST add 3 inputs or no output will be produced.

!!! seealso
    For the reverse operation, see [ExtractComponents](/Cxx/Images/ExtractComponents).

