This function provides a data.frame containing standard anatomical measurements from xylem cross-sections images analysed with ROXAS (version 3.0). From the dataset described in anatomy.data, multiple input examples can be provided, including; 1) Norway Spruce (Picea abies) from the Loetschental, Switzerland, 2) Siberian larch (Larix siberica) from Siberia, Russia, 3) Stone pine (Pinus cembra) from the Dolomite mountains, Italy, and 4) Scots pine (Pinus sylvestris) from the eastern lowlands, Germany.