future_map does not work with output from modelr::permute

[rorytboyle]

future_map does not work with output from modelr::permute

[DavisVaughan]

furrr doesn't have quite enough information to know that the modelr package needs to be loaded on the worker so that the modelr:::as.data.frame.permutations() method is registered. So you have to tell it to do that manually. This should work

library(dplyr)
library(modelr)
library(furrr)
#> Loading required package: future

plan(multisession, workers = 4)

reg_form <- 'mpg ~ cyl + disp + hp + wt'

perm_data <- permute(mtcars, 5000, 'hp')

perm_models_parallel <- future_map(
  perm_data$perm, 
  ~ lm(reg_form, data = .), 
  .options = furrr_options(packages = "modelr")
)

^{Created on 2022-11-29 with reprex v2.0.2.9000}

[rorytboyle]

Thank you for responding - that works fine now!