README-NOT.md
In mpadge/packgraph: Examine and Analyse Function Call Graphs of R Packages

packgraph

Examine and analyse static function call graphs of R packages. Mostly derived from functionality provided by the r-lib/pkgapi package, which is not on CRAN and must first be installed with

remotes::install_github ("r-lib/pkgapi")

The main function, pg_graph(), returns all exported and non-exported functions from a package (as nodes), and tallies of all functional connections between these (as edges). The function also includes a plot parameter which can be used to visualize the resultant network using the visNetwork package.

library (packgraph)
if (!file.exists ("./git2r"))
    git2r::clone ("https://github.com/ropensci/git2r", local_path = "./git2r")
# Currently needs absolute file paths to work
pkg_dir <- tools::file_path_as_absolute ("./git2r")
g <- pg_graph (pkg_dir, plot = FALSE)
g

## $nodes
## # A tibble: 168 x 16
##    name     export file   line1 line2 group centrality doc_lines cmt_lines todos
##    <chr>    <lgl>  <chr>  <int> <int> <int>      <dbl>     <dbl>     <dbl> <dbl>
##  1 .onUnlo… FALSE  R/git…    30    32     3        0          21         5     0
##  2 [.git_t… FALSE  R/tre…   221   236     1        0          26         0     0
##  3 add      TRUE   R/ind…    80    99     1        1.5        50         0     0
##  4 add_ses… FALSE  R/com…    70    74     1        0          39         0     0
##  5 ahead_b… TRUE   R/com…    57    61     1        0           1         0     0
##  6 as.char… FALSE  R/tim…    53    57     4        0           8         0     0
##  7 as.data… FALSE  R/com…   627   635     5        0          69         0     0
##  8 as.data… FALSE  R/rep…    79    81     1        0           0         0     0
##  9 as.data… FALSE  R/tre…    71    77     6        0          25         0     0
## 10 as.list… FALSE  R/tre…   114   116     1        0          23         0     0
## # … with 158 more rows, and 6 more variables: todo_lines <named list>,
## #   n_example_lines <dbl>, n_doc_words <int>, has_usage <lgl>,
## #   num_params <int>, has_dots <lgl>
## 
## $edges
## # A tibble: 203 x 3
##    from                         to                    n
##    <chr>                        <chr>             <int>
##  1 [.git_tree                   lookup                1
##  2 add                          lookup_repository     1
##  3 add                          workdir               1
##  4 ahead_behind                 lookup_commit         2
##  5 as.data.frame.git_repository commits               1
##  6 as.list.git_tree             lookup                1
##  7 blame                        lookup_repository     1
##  8 blob_create                  lookup_repository     1
##  9 branch_create                last_commit           1
## 10 branches                     lookup_repository     1
## # … with 193 more rows
## 
## attr(,"pkg_name")
## [1] "git2r"

prior art

Much of the functionality is primarily built upon the pkgapi package.
The flow package produces flow diagrams of R functions.
The collaboratoR package as presented at eRum 2020 extracts graphs of collaborators from a version control history rather than graphs of functions.