Get Lengths of Jump Matrix Columns Across Chains

This function calculates the number of columns (lengths) in the jump matrix for each chain within the outputs object and compiles the results into a data frame. It also creates a sorted frequency table of the unique lengths in descending order.

get_lengths(outputs, n_chain)

Arguments

outputs

List. A list containing the jump matrices for all chains. Typically, this is the output from an RJMCMC process.

n_chain

Integer. The number of chains to process.

Value

A named vector representing the sorted frequency table of column lengths across all chains.

Details

The function iterates through each chain in the range 1:n_chain. For each chain, it calculates the number of columns in each jump matrix stored in outputs$jump. These lengths are compiled into a data frame with two columns:

• chain: The chain index.

• length_n: The number of columns in the jump matrix for that chain.

Finally, it creates a frequency table of the length_n values and sorts it in descending order, allowing the user to see the most common lengths of jump matrices.