Hi. Is it possible to pass a 3D array from R into stan? If yes, could you please show me how? Thanks.
In the interfaces rstan and cmdstanr, it’s just passed in as a 3D array. If you want a file format, we prefer JSON now and may deprecate RDump going forward. Here’s the doc for the file format:
It explains, among other things, how you can use
cmdstanr to write the data files from a data list, so that might be the easiest way for you to figure things out.
I apologize as I actually asked the wrong question. I want to pass an array of matrices:
matrix[I, T] X[P]
How could I create such data in R so that Stan can recognize it correctly? Thanks.