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function install.extras in R is not found

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

r

1 answer

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)

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