Weathermap is a network visualisation tool, to take graphs you already have and display an overview of your network as a map. It supports RRD, MRTG (RRD and old log-format), and tab-delimited text files. Other sources are via plugins or external scripts.
To install network-weathermap, run the following command in macOS terminal (Applications->Utilities->Terminal)
sudo port install network-weathermap
To see what files were installed by network-weathermap, run:
port contents network-weathermap
To later upgrade network-weathermap, run:
sudo port selfupdate && sudo port upgrade network-weathermap
Reporting an issue on MacPorts Trac
The MacPorts Project uses a system called Trac to file tickets to report bugs and enhancement requests.
Though anyone may search Trac for tickets, you must have a GitHub account in order to login to Trac to create tickets.