It checks the heaviness of the packages that user's package depends on. For each package listed in the "Depends", "Imports" and "Suggests" fields in the DESCRIPTION file, it opens a new R session, loads the package and counts the number of namespaces that are loaded. The summary of the dependencies is visualized by a customized heatmap. Examples of dependency analysis can be found at < https://jokergoo.github.io/pkgndep/stat/>.