In practice, it is common to define drawing dimensions in 2D views and sections. This situation must also be considered when analyzing tomographically generated measurement data. The data for analysis must be extracted from the 3D data set as a first step. This is accomplished by defining planes in the work piece coordinate system and cutting both the CAD data and the actual point cloud.  The software automatically extracts contours that represent the nominal data and actual contours. These are then displayed in a 2D view and can be used for further analysis.