[n.b. I’ve posted a similar question with the brms tag inquiring about a brms-specific solution, but I’m still curious if my more-raw-stan-centered proposal below makes any sense] I have space-time data (x,y,time) from the neuroimaging field where the data is collected hierarchically such that ther…

yeah, the example you posted from that repo has a Kronecker product covariance matrix.

Hierarchical 2D+1D space-time modelling using GPs

mike-lawrence June 5, 2020, 2:30pm 11

See here for discussion of splines for non-hierarchical space+time models.

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