Dear all,

I have a problem where I must represent points with XYZ coordinates
changing over time. I will do a number of operations on this data such as
calculating the YZ-projection distance of the points to the origin over
time, the frequency spectrum of the X-T data etc. I am trying to find a
good way of representing this data with an appropriate data structure.

It appears like higher-dimensional data frames are not allowed and I do not
know if I should use a list of data frames or if there is a better
solution, possibly as part of an external package.

Thank you for your time
Umut Toprak

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