R: Retrieve Dependency Information for a Vignette

vignetteDepends {tools} | R Documentation

## Retrieve Dependency Information for a Vignette

### Description

Given a vignette name, will create a `DependsList` object that reports information about the packages the vignette depends on.

### Usage

    vignetteDepends(vignette, recursive = TRUE, reduce = TRUE,
                    local = TRUE, lib.loc = NULL)

### Arguments

`vignette` | The path to the vignette source
`recursive` | Whether or not to include indirect dependencies
`reduce` | Whether or not to collapse all sets of dependencies to a minimal value
`local` | Whether or not to search only locally
`lib.loc` | What libraries to search in locally

### Details

If `recursive` is `TRUE`, any package that is specified as a dependency will in turn have its dependencies included (and so on), these are known as indirect dependencies. If recursive is `FALSE`, only the dependencies directly named by the vignette will be used.

If `local` is `TRUE`, the system will only look at the user's local machine and not online to find dependencies.

If `reduce` is `TRUE`, the system will collapse the fields in the `DependsList` object such that a minimal set of dependencies are specified (for instance if there was foo, foo (>= 1.0.0), foo (>= 1.3.0), it would only return foo (>= 1.3.0)).

### Value

An object of class `"DependsList"`.

### Author(s)

Jeff Gentry

### See Also

`pkgDepends`

### Examples

    ## This may not be installed, as it requires lattice
    gridEx <- system.file("doc", "grid.Rnw", package = "grid")
    vignetteDepends(gridEx)

[Package tools version 3.5.1 Index]