No member named 'SetInputData' in 'vtkActor'

This error message indicates that there is no method or function called "SetInputData" in the vtkActor class. This could be due to a few reasons, such as:

1. You may have misspelled the method name. Check your code to make sure that you are using the correct method name.

2. The version of VTK that you are using may not have this method. Check the documentation for your version of VTK to see if this method is available.

3. You may be trying to use a method that is not applicable to the vtkActor class. Make sure that you are using the correct class and method for your specific task.

To fix this error, you may need to modify your code to use a different method or class that is appropriate for your task.