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I need to install the package "XML" to R. It always reports "XML is not available for R(Version 3.1.1)" I have tried to download the .tar but it still did'n work. Can anyone help me to solve this?
> install.packages("XML", repos = "http://www.omegahat.org/R");
Warning in install.packages :
cannot open: HTTP status was '404 Not Found'
Warning in install.packages :
cannot open: HTTP status was '404 Not Found'
Warning in install.packages :
unable to access index for repository http://www.omegahat.org/R/bin/windows/contrib/3.1
package ‘XML’ is available as a source package but not as a binary
Warning in install.packages :
package ‘XML’ is not available (for R version 3.1.1)
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Changing the configuration in R Studio to solve install packages issue. Go To Tools -> Global option -> Packages. Then uncheck the option “Use secure download method for HTTP”. For other RStudio issues refer to official Troubleshooting Guide here.
Go into R, click on Packages (at the top of the R console), then click on "Install package(s) from local zip files", then find the zip file with arm from wherever you just saved it. Do the same thing to install each of the other packages you want to install.
It stands for Extensible Markup Language (XML). Similar to HTML it contains markup tags. But unlike HTML where the markup tag describes structure of the page, in xml the markup tags describe the meaning of the data contained into he file. You can read a xml file in R using the "XML" package.
When this happens, it can often be helpful to do a websearch for "GitHub [packagename]" - and if you find a GitHub website that sounds like the right package, you can install the in-development version.
In general, install.packages("XML") worked well for me in the past, but I recently had an issue with R version 3.6.3.
The solution for me was:
install.packages("XML", repos = "http://www.omegahat.net/R")
Note that it's .net, not .org.
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