Converts a data frame to the output structure of extract

Source: R/df_to_stanarray.R

Converts a data frame to the output structure of extract

df_to_stanarray(df)

Arguments

df

data frame with the column names 'parameters', 'iterations' and 'chains'

Value

An array from df with the dimensions [iteration, chain, parameters]

Examples

df <- data.frame(
              parameters = c('mu', 'mu'),
              iterations = c(0.345, 0.263),
              chains = c(1, 2),
              stringsAsFactors = FALSE
              )
df_to_stanarray(df)

#> , , parameters = mu
#> 
#>           chains
#> iterations chain:1 chain:2
#>       [1,]   0.345   0.263
#>