installed.packages
Find Installed Packages
Description
Retrieves the installed packages information.
Usage
installed.packages(lib.loc = NULL, priority = NULL, noCache = FALSE, fields = NULL,
subarch = .Platform$r_arch)
Arguments
| lib.loc |
a character vector containing the names of library directories.
If lib.loc is NULL, .libPaths() is used.
|
| priority |
a character vector specifying the filter priorities. If an installed package's priority is not
in this filter list, this package's information is not included in result matrix.
By default, NULL means all packages' information for any priority (even NAs)
are included in resulting matrix.
Current supported priorities are
- "recommended"
- "base"
- "high" (which is the union of "recommended" and "base")
|
| noCache |
This argument is ignored.
|
| fields |
a character vector specifying the additional package fields to be included in the result.
By default, NULL means only standard package fields are included.
|
| subarch |
a character vector specifying the sub architecture of platform OS. The packages' information
where the "Archs" field is NA, or is listed in subarch, is included in the resulting matrix.
|
Details
At a minimum, the following package fields are contained in resulting matrix: "Package", "LibPath","Version",
"Priority","Depends","Imports","LinkingTo", "Suggests", "Enhances", "OS_type", "License"
and "Built". The fields specified by fields are also appended as the last column.
The final package information is filtered by priority and subarch.
Value
returns a character matrix containing the installed package information.
Each row corresponds to a package: the first column
corresponds to the package name; the second column corresponds
to the library path; the remaining columns correspond to other
fields, as described in the DETAILS section.
The row names of the matrix are the selected package names.
The column names of the matrix are field names, except for the second
column (because "LibPath" is not a package field).
See Also
Examples
installed.packages()