Not all suggested packages are installed by default. These packages are not installed or loaded by default in order to create a slimmer and faster package build, install, and load. Use show_unsupported_formats() to check all unsupported formats. install_formats() installs all missing ‘Suggests’ dependencies for rio that expand its support to the full range of support import and export formats.
Usage
install_formats(...)
show_unsupported_formats()
Value
For show_unsupported_formats(), if there is any missing unsupported formats, it return TRUE invisibly; otherwise FALSE. For install_formats() it returns TRUE invisibly if the installation is succuessful; otherwise errors.