Install httpgd
from CRAN:
Or get the latest development version from GitHub:
See system requirements for troubleshooting.
Depends on R
version ≥ 4.0 on windows, and R ≥ 3.2 on
linux and macOS (a C++ compiler with basic C++17 support is required).
Note that there is a rare bug in R versions < 4.1, that leads to some plots disappearing when ggplot2 plots are resized and deleted in a specific way.
Also see the unigd
system requirements.