load_pkg_db

A new metric named 'dependency heaviness' is proposed that measures the number
of additional dependency packages that a parent package brings to its child package
and are unique to the dependency packages imported by all other parents.
The dependency heaviness analysis is visualized by a customized heatmap.
The package is described in <doi:10.1093/bioinformatics/btac449>.
We have also performed the dependency heaviness analysis on the CRAN/Bioconductor
package ecosystem and the results are implemented as a web-based database
which provides comprehensive tools for querying dependencies of individual R packages.
The systematic analysis on the CRAN/Bioconductor ecosystem is described in
<doi:10.1016/j.jss.2023.111610>. From 'pkgndep' version 2.0.0, the heaviness
database includes snapshots of the CRAN/Bioconductor ecosystems for many old R versions.

Zuguang Gu

pkgndep

Analyze Dependency Heaviness of R Packages

load_pkg_db function

<dl>
 <dt>lib</dt>
<dd>Local library path. If the value is <code>NA</code>, only remote package database is used.</dd> <dt>online</dt>
<dd>If the value is <code>TRUE</code>, it will directly use the newest package database file from CRAN/Bioconductor. If the value is <code>FALSE</code>, it uses the pre-computated package database on a specific CRAN/Bioconductor snapshot. The version of the pre-computated package database can be set via <code>pkgndep_opt</code>$heaviness_db_version.</dd> <dt>db</dt>
<dd>A pre-computed <code>pkg_db</code> object.</dd> <dt>verbose</dt>
<dd>Whetehr to print messages.</dd>
</dl>

Arguments

Load package database — load_pkg_db

<dl>


 <dt>lib</dt>
<dd>Local library path. If the value is <code>NA</code>, only remote package database is used.</dd>

 <dt>online</dt>
<dd>If the value is <code>TRUE</code>, it will directly use the newest package database file from CRAN/Bioconductor. If the value is <code>FALSE</code>, it uses the pre-computated package database on a specific CRAN/Bioconductor snapshot. The version of the pre-computated package database can be set via <code>pkgndep_opt</code>$heaviness_db_version.</dd>

 <dt>db</dt>
<dd>A pre-computed <code>pkg_db</code> object.</dd>

 <dt>verbose</dt>
<dd>Whetehr to print messages.</dd>


</dl>

load_pkg_db: Load package database

Description

Usage

Value

Arguments

Details

Examples