Hi @Pielhaas,
CryoSPARC will soon support automatic generation of BILD files that help display the viewing direction distribution, see this thread for more discussion on how BILD files display the viewing direction distribution.
The raw 3D pose data in CryoSPARC that are used to generate these files (along with the viewing direction plot) are contained within the alignments3D/pose variables, which store poses in an axis-angle representation in radians. This could certainly be extracted and worked with in a scripting environment via CryoSPARC Tools. The viewing direction specifically is a function of the pose, and extracting it would require converting the axis-angle vector to a rotation matrix and taking it’s last column. I could provide a quick code snippet to use built-in CryoSPARC functions to do this if desired – please let me know!
Hope this helps,
Michael