Matrix.utils is an R package which has been removed from the CRAN repository years ago. But many R packages depend on this, we archived on GitHub, 2023-12-09
To use this development version of the package, run the following lines in R:
devtools::install_github('sqsun/Matrix.utils', build_vignettes=TRUE)
library('Matrix.utils')(You may need to install the package remotes, with install.packages('remotes'). Installation took <90s on a Macbook Pro.)
This should load all of the code and relevant documentation.