Resolve the output format for an R Markdown document — resolve_output

Read the YAML metadata (and any common output YAML file) for the document and return an output format object that can be passed to the render function.

resolve_output_format(
  input,
  output_format = NULL,
  output_options = NULL,
  output_yaml = NULL
)

Arguments

input: Input file (Rmd or plain markdown)
output_format: Name of output format (or NULL to use the default format for the input file).
output_options: List of output options that should override the options specified in metadata.
output_yaml: Paths to YAML files specifying output formats and their configurations. The first existing one is used. If none are found, then the function searches YAML files specified to the output_yaml top-level parameter in the YAML front matter, _output.yml or _output.yaml, and then uses the first existing one.

Value

An R Markdown output format definition that can be passed to render.

Details

This function is useful for front-end tools that need to modify the default behavior of an output format.