Convert `mcmc.list` to a tidy data.table object

`mcmc_to_dt` use data.table to return a tidy dataframe from an "mcmc.list" object

mcmc_to_dt(mcmc_object, colnames = NULL)

Arguments

mcmc_object

an object of class "mcmc.list", as you would find with fitting a model using `jags.model()`, and `coda.samples`
colnames

which parameters we want from `mcmc_object`, if `NULL` then all columns get selected

Value

a tidy data.table dataframe of MCMC sample

Examples

library(coda)
data(line)
mcmc_to_dt(line)
#>       iteration chain parameter    value
#>    1:         1     1     alpha 7.173130
#>    2:         2     1     alpha 2.952530
#>    3:         3     1     alpha 3.669890
#>    4:         4     1     alpha 3.315220
#>    5:         5     1     alpha 3.705440
#>   ---                                   
#> 1196:       196     2     sigma 1.306930
#> 1197:       197     2     sigma 0.846828
#> 1198:       198     2     sigma 0.465129
#> 1199:       199     2     sigma 0.672417
#> 1200:       200     2     sigma 0.639787