Hi, I am using the vtkLabeledDataMapper (VTK 4.2 release) The problem is that a label is not hidden, if the label is behind an object. Is this a bug or a feature ? greets Ingo --- Dr.-Ing. Ingo H. de Boer Polytec GmbH Polytec-Platz 1-7, 76337 Waldbronn, Germany phone: ++49 7243 604 106 fax : ++49 7243 604 255