Error in loadNamespace(i, c(lib.loc, .libPaths()), versionCheck = vI[[i]]) : there is no package called 'stringi' [duplicate]

Question

When I use

library(Hmisc)

I get the following error

    Error in loadNamespace(i, c(lib.loc, .libPaths()), versionCheck = vI[[i]]) : there is no package called 'stringi'
    Error: package 'ggplot2' could not be loaded

As well, if I use

library(ggplot2)

I get the following error

    Error in loadNamespace(i, c(lib.loc, .libPaths()), versionCheck = vI[[i]]) : there is no package called 'stringi'
    Error: package or namespace load failed for 'ggplot2'

I've tryed to install 'stringi' install.packages("stringi")

But at some point, during the installation, I get the following error message:

    configure: error: in `/private/var/folders/pr/wdr5dvjj24bb4wwnjpg1hndc0000gr/T/RtmpeQ5pXk/R.INSTALL10b94a012cab/stringi':
    configure: error: no acceptable C compiler found in $PATH
    See `config.log' for more details
    ERROR: configuration failed for package 'stringi'
    * removing '/Library/Frameworks/R.framework/Versions/3.2/Resources/library/stringi'

I'm using RStudio (Version 0.99.447) and I have R version 3.2.1.

Answer 1

Use this:

install.packages("package_name", repos=c("http://rstudio.org/_packages",
"http://cran.rstudio.com",dependencies=TRUE))

This works as it assigns from where to download the package.

Answer 2

I got this error while trying to load the swirl package.

You can try to re install the package directly from cran and include an argument to ensure all the dependant packages are included.

install.packages("swirl", repos="http://cran.rstudio.com/", dependencies=TRUE)