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` to the minimal set of dependencies (for instance if the dependencies were ('foo', 'foo (>= 1.0.0)', 'foo (>= 1.3.0)'), the return value would be 'foo (>= 1.3.0)').

### Value

An object of class `DependsList`

### Author(s)

Jeff Gentry

### See Also

`pkgDepends`

### Examples

    gridEx <- system.file("doc", "grid.Snw", package = "grid")
    vignetteDepends(gridEx)

[Package tools version 2.8.1 Index]