Enter the body of text here

Code should be placed in three backticks as shown below

Warning in install.packages :
  package 'biocLite' is not available for this version of R

A version of this package for your version of R might be available elsewhere,
see the ideas at
https://cran.r-project.org/doc/manuals/r-patched/R-admin.html#Installing-packages
> 

I have tried updating R and RStudio, and deleting the older versions, re-loading the new versions of both R and R-Studio. For a whole week I have tried different ways and have failed. 

Can someone please help? 


sessionInfo( )

Where are you getting the instructions to use biocLite() from? That method of installing Bioconductor packages is very out of date and hasn't been supported for quite a few years.

To install a package you should use the package BiocManager and the function install(). For example on the monocle landing page the installation instructions are:

if (!require("BiocManager", quietly = TRUE))
    install.packages("BiocManager")

BiocManager::install("monocle")

That will install BiocManager if you don't have it already, and then install monocle.