function install.extras in R is not found

Question

[Martina]

Hello, I wanted to install and use NMF in R but I get an error:

Error in install.extras("NMF") : could not find function "install.extras"

Could you please advice me how to install install.extras to R?

Thank you very much, Martina

[zx8754]

Useful StackOverflow post regarding this error:

• Error: could not find function … in R

Answer 1

[h.mon]

Did you install and load the packageExtra package?

# install the package only once
BiocManager::install("packageExtra")

# load the package every new R session
library(packageExtra)