drake (version 6.2.1)

knitr_in: Declare the knitr/rmarkdown source files of a workflow plan command.

Description

Use this function to help write the commands in your workflow plan data frame. See the examples for a full explanation.

Usage

knitr_in(...)

Arguments

...

Character strings. File paths of knitr/rmarkdown source files supplied to a command in your workflow plan data frame.

Value

A character vector of declared input file paths.

See Also

file_in(), file_out(), ignore()

Examples

# NOT RUN {
test_with_dir("Contain side effects", {
# `knitr_in()` is like `file_in()`
# except that it analyzes active code chunks in your `knitr`
# source file and detects non-file dependencies.
# That way, updates to the right dependencies trigger rebuilds
# in your report.
# The mtcars example (`drake_example("mtcars")`)
# already has a demonstration
load_mtcars_example()
make(my_plan)
# Now how did drake magically know that
# `small`, `large`, and `coef_regression2_small` were
# dependencies of the output file `report.md`?
# because the command in the workflow plan had
# `knitr_in("report.Rmd")` in it, so drake knew
# to analyze the active code chunks. There, it spotted
# where `small`, `large`, and `coef_regression2_small`
# were read from the cache using calls to `loadd()` and `readd()`.
})
# }