miniCRAN (version 0.3.0)

makeDepGraph: Create dependency graph from available packages.

Description

Each package is a node, and a dependency is an edge

Usage

makeDepGraph(
  pkg,
  availPkgs,
  repos = getOption("repos"),
  type = "source",
  suggests = TRUE,
  enhances = FALSE,
  includeBasePkgs = FALSE,
  ...
)

Arguments

pkg

Character vector of packages.

availPkgs

Data frame with an element called package. The package element is a vector of available packages. Defaults to reading this list from CRAN, using available.packages()

repos

URL(s) of the 'contrib' sections of the repositories, e.g. "https://cran.us.r-project.org". Passed to available.packages()

type

Possible values are (currently) "source", "mac.binary" and "win.binary": the binary types can be listed and downloaded but not installed on other platforms. Passed to download.packages().

suggests

If TRUE, retrieves Suggests dependencies (non-recursively)

enhances

If TRUE, retrieves Enhances dependencies (non-recursively)

includeBasePkgs

If TRUE, include base R packages in results

...

Other arguments passed to available.packages()

See Also

pkgDep() to extract package dependencies

Other dependency functions: basePkgs(), pkgDep(), plot.pkgDepGraph()

Examples

if (interactive()) {
  availPkgs <- cranJuly2014
  
  availPkgs <- pkgAvail(
    repos = c(CRAN = "https://cloud.r-project.org"),
    type = "source"
  )
  
  
  # Create dependency graph using stored database of available packages
  p <- makeDepGraph(
    c("ggplot2", "forecast"),
    availPkgs = availPkgs
  )
  
  if(require(igraph)) plot(p)

  # Create dependency graph using newly retrieved database from CRAN
  
  p <- makeDepGraph(
    c("ggplot2", "forecast"),
    repos = c(CRAN = getOption("minicran.mran")),
    type = "source"
  )
  if(requireNamespace("igraph", quietly = TRUE)) {
    plot(p)
  } else {
    message("install package `igraph` to view dependency graph")
  }
  
}