Why is my RStudio not installing packages?

Make sure that the package is available through CRAN or another repository, that you’re spelling the name of the package correctly, and that it’s available for the version of R you are running.

What is the correct way to install the packages in R Mcq?

Explanation: To install a package named for, open up R and type install. packages(“for”). To install foo and additionally install all of the other packages on which for depends, instead type install. packages (“for”, depends = TRUE).

How do I install RStudio packages?

Installing Packages

  1. Open RStudio.
  2. In the lower-right pane of RStudio, select the Packages tab and the Install button.
  3. Type the name of the packages to be installed in the “Packages (separate multiple packages with a space or comma):” box.
  4. Press Install .

How do I install local R packages?

To install a R package locally, specify the local directory where you want to install by using the “-l” option in the “R CMD INSTALL” command. For example, to install the R package in the local directory “/usr/me/localR/library”, use the “R CMD INSTALL” as follows.

How can I download dplyr package?

You can install:

  1. the latest released version from CRAN with install.packages(“dplyr”)
  2. the latest development version from github with if (packageVersion(“devtools”) < 1.6) { install.packages(“devtools”) } devtools::install_github(“hadley/lazyeval”) devtools::install_github(“hadley/dplyr”)

What does %>% mean in dplyr?

the forward pipe operator
%>% is called the forward pipe operator in R. It provides a mechanism for chaining commands with a new forward-pipe operator, %>%. This operator will forward a value, or the result of an expression, into the next function call/expression. It is defined by the package magrittr (CRAN) and is heavily used by dplyr (CRAN).

What is the command to install packages MCQ?

apt-get is used to retrieve and install packages.

What function can be used to install packages in R?

The most common way is to use the CRAN repository, then you just need the name of the package and use the command install. packages(“package”) .

How does install packages work in R?

Part 1-Getting the Package onto Your Computer

  1. Open R via your preferred method (icon on desktop, Start Menu, dock, etc.)
  2. Click “Packages” in the top menu then click “Install package(s)”.
  3. Choose a mirror that is closest to your geographical location.
  4. Now you get to choose which packages you want to install.

How do I install a package using requirements txt?

1 Answer

  1. Firstly, remove matplotlib==1.3.1 from requirements.txt.
  2. After that try to install it with sudo apt-get install python-matplotlib.
  3. Run pip install -r requirements.txt (Python 2), or pip3 install -r requirements.txt (Python 3)
  4. pip freeze > requirements.txt.

What package is dplyr in R?

dplyr is a new package which provides a set of tools for efficiently manipulating datasets in R. dplyr is the next iteration of plyr , focussing on only data frames. dplyr is faster, has a more consistent API and should be easier to use.

How to override R package with static HTML Help pages?

By default a package is installed with static HTML help pages if and only if R was: use options –html and –no-html to override this.

How to specify the location of the repository to install packages?

You can indeed specify the location when using the install.packages () function with the argument repos=, but you can also choose your favorite repository which will be used each time you download a package. You can see a list of all availables mirrors on the CRAN website. Juste copy/paste the adress of the closest CRAN repository to you.

How to install older version of packages from source?

A supplementarily handy (but trivial) tip for installing older version of packages from source. First, if you call “install.packages”, it always installs the latest package from repo. If you want to install the older version of packages, say for compatibility, you can call install.packages (“url_to_source”, repo=NULL, type=”source”).

Is it possible to set TMPDIR in R?

It is possible that environment variable TMPDIR will need to be set (although R CMD tries to set it suitably otherwise): use forward slashes and no spaces for the path to a writable directory.

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