These models work with the time domain discrete dynamic response of a NDoF system. The Spatial Model directly identifies stiffness and damping matrices from restoring forces and displacements and is useful for monitoring damping alterations in the response of a pseudo-dynamic test. See the paper: "Monitoring Damping in Pseudo-Dynamic Tests" by F. J. Molina, G. Magonette, P. Pegon & B. Zapico ( http://dx.doi.org/10.1080/13632469.2010.544373 )
Francisco Javier Molina (2020). Spatial and Filter Models (https://www.mathworks.com/matlabcentral/fileexchange/32634-spatial-and-filter-models), MATLAB Central File Exchange. Retrieved .