Register and Unregister a Chunk Callback

Register a callback function to be executed after a chunk within an R Markdown document is run.

Usage

registerChunkCallback(callback)

unregisterChunkCallback(id = NULL)

Arguments

callback

A callback function. See Chunk Callbacks for more details.

id

A unique identifier.

Value

For registerChunkCallback(), a unique identifier. That identifier can be passed to unreigsterChunkCallback() to de-register a previously-registered callback.

Chunk Callbacks

The callback argument should be a function accepting two parameters:

• chunkName: The chunk label,

• chunkCode: The code within the chunk.

The function should return an R list of HTML outputs, to be displayed after that chunk has been executed.