packages.loaded

Returns TRUE if the whole set of packages entered has been loaded, or FALSE
otherwise. This can be useful when developing a package where there is optional
functionality depending if another package is in use (but the other package is
not part of 'depends' because it is not essential). Because 'require' cannot
be used within functions submitted as part of a CRAN package.

A set of handy functions. Includes a versatile one line progress bar, one
line function timer with detailed output, time delay function, text histogram, object
preview, CRAN package search, simpler package installer, Linux command install check,
a flexible Mode function, top function, simulation of correlated data, and more.

Nicholas Cooper

NCmisc

Miscellaneous Functions for Creating Adaptive Functions and
Scripts

packages.loaded function

<dl><dt>pcks</dt>
<dd>character, a package name, or vector of names, if left blank will return all loaded</dd>
<dt>...</dt>
<dd>further package names as character (same as entering via pcks, 
but avoids need for c() in pcks)</dd>
<dt>cran.check</dt>
<dd>logical, in the case at least one package is not found, whether
to search CRAN and see whether the package(s) even exist on CRAN.</dd>
<dt>repos</dt>
<dd>repository to use if package is not loaded and cran.check=TRUE,
if NULL, will attempt to use the repository in getOptions("repos") or will
default to the imperial.ac.uk mirror. Otherwise the default is to use
all available repositories from getRepositories()</dd></dl>

Arguments

Author

Check whether a set of packages has been loaded — packages.loaded

<dl>

<dt>pcks</dt>
<dd>character, a package name, or vector of names, if left blank will return all loaded</dd>


<dt>...</dt>
<dd>further package names as character (same as entering via pcks, 
but avoids need for c() in pcks)</dd>


<dt>cran.check</dt>
<dd>logical, in the case at least one package is not found, whether
to search CRAN and see whether the package(s) even exist on CRAN.</dd>


<dt>repos</dt>
<dd>repository to use if package is not loaded and cran.check=TRUE,
if NULL, will attempt to use the repository in getOptions("repos") or will
default to the imperial.ac.uk mirror. Otherwise the default is to use
all available repositories from getRepositories()</dd>

</dl>

packages.loaded: Check whether a set of packages has been loaded

Description

Usage

Value

Arguments

Author

Examples