code_to_plan(), plan_to_code(), and plan_to_notebook() together illustrate the relationships between drake plans, R scripts, and R Markdown documents. In the file generated by plan_to_code(), every target/command pair becomes a chunk of code. Targets are arranged in topological order so dependencies are available before their downstream targets. Please note:

  1. You are still responsible for loading your project's packages, imported functions, etc.

  2. Triggers disappear.

plan_to_code(plan, con = stdout())

Arguments

plan

Workflow plan data frame. See drake_plan() for details.

con

A file path or connection to write to.

See also

Examples

plan <- drake_plan( raw_data = read_excel(file_in("raw_data.xlsx")), data = raw_data, hist = create_plot(data), fit = lm(Ozone ~ Temp + Wind, data) ) file <- tempfile() # Turn the plan into an R script a the given file path. plan_to_code(plan, file) # Here is what the script looks like. cat(readLines(file), sep = "\n")
#> raw_data <- read_excel(file_in("raw_data.xlsx")) #> data <- raw_data #> fit <- lm(Ozone ~ Temp + Wind, data) #> hist <- create_plot(data)
# Convert back to a drake plan. code_to_plan(file)
#> # A tibble: 4 x 2 #> target command #> <chr> <expr_lst> #> 1 raw_data read_excel(file_in("raw_data.xlsx")) #> 2 data raw_data #> 3 fit lm(Ozone ~ Temp + Wind, data) #> 4 hist create_plot(data)