pr0m1th3as/csg-dataset: A large dataset of diaphyseal cross sectional geometric properties and relevant measurements from human long bones.

The present GNU Octave package contains the largest (to date) public dataset of diaphyseal CSG properties of human long bones. The dataset is split between two files, cross-sections.mat and csg-properties.mat, each containing a $2 \times 24$ cell array saved in Octave's native binary format. Both files become available into the load path once the csg-dataset package has been loaded and they can be separately loaded into Octave's workspace with the load command.

csg-properties.mat contains a total of 61 measurements extracted from 3618 digital twins of intact femur, humerus, tibia, and ulna bones, which belong to 518 adult individuals of known sex and age-at-death derived from three European skeletal reference collections. More specifically, the Athens Collection, which is housed at the Department of Animal and Human Physiology of the National and Kapodistrian University of Athens, the Cretan Collection, which is housed at the Forensic Medicine Unit of the Faculty of Medicine of the University of Crete, and the Granada Collection, which comprises individuals from the Cemeterio de San José Cemeterio in Granada, Andalucia and it is currently curated at the Department of Toxicollogy and Physical Anthropology of the University of Granada. These measurements include the maximum distance of each bone and a battery of CSG properties and other measurements computed from five diaphyseal cross sections sliced at 20%, 35%, 50%, 65%, and 80% of the long bone's longitudinal axis. The 2D polygons representing each of the 18,090 cross sections are stored in cross-sections.mat.

Both cell arrays stored in cross-sections.mat and csg-properties.mat follow the same layout. The samples are grouped per skeletal collection (Athens, Crete, Granada), per bone (Femur, Humerus, Tibia, Ulna), and per side (Left, Right), with each column corresponding to a distinct group. The first row contains each group's description tag (e.g. 'Athens Femur Left') and the second row contains the corresponding data, which for CSG properties are stored in cell arrays and for cross sections are stored in structure arrays. Each sample's ID (based on the 3D model filename), sex, and age-at-death info is stored in both cell arrays making cross-sections.mat and csg-properties.mat data files completely independent and self-documented.

The data in csg-properties.mat can be regrouped into four numerical arrays (variables named Femur, Humerus, Tibia, and Ulna) by aggregating collections and sides into a single group for each long bone with the accompanying longbone_SampleStats script, which is part of the csg-dataset package. The longbone_SampleStats script automatically saves the aforementioned numerical arrays into a new binary data file, named Bone-Data.mat, as well as it calculates the dataset sample statistics presented below.

• The dataset of long bone diaphyseal cross sectional geometric properties contained and distributed as the csg-dataset package is licensed under the Creative Commons Attribution 4.0 International license. (CC BY 4.0)
• The longbone_SampleStats script is licensed under the GNU General Public License version 3. (GPLv3)