Instructions for downloading R:
If you already have R installed, skip this page and go
Since the mh1823 software is based on R,
the most powerful statistical and graphics engine available anywhere, you
must first visit the R website, http://www.r-project.org/, and download and install
R. R is open-source (free)
and is supported by some of the most well known applied statisticians in the
R is a language and
environment for statistical computing and graphics. It is a GNU project, similar to the award-winning S language and environment
which was developed at Bell Laboratories (formerly AT&T, now Lucent
Technologies) by John Chambers and colleagues.
How to install R:
- Download the Windows binary files from the R website,
To do that click on CRAN (Comprehensive R
Archive Network) and choose a
mirror site in the US. From the CRAN page, click on Windows (95 and
later) then click on base to download the R base package.
Install R using the self-install feature of what you have downloaded.
- Open R by clicking on the desk-top icon.
- (As of 20 December, 2014) R has 6.127 free add-on packages for special
purposes. We need one of them. Within R, click on
"Packages, Install Packages ..." You will be asked to select a
local mirror site. Choose one near you.
- You will be presented with a new menu. Choose "xlsx"
which will then be installed in your R library.
- Close R, by clicking on the
in the top right corner of the window.
We have some one-time loose ends to tie up:
- Right-click on the
desktop icon and rename it to "mh1823
Open the mh1823 POD sub-folder and copy its
address. It will look something like this:
and Settings\your name\My Documents\R-Projects\mh1823 POD" Highlight and copy this address.
- Right-click on the newly renamed R desktop icon
and choose Properties, and paste the address in the Start in window.
You only have to install R and its ancillary
packages once. They will be there when you use mh1823 POD software
Note on JAVA:
JAVA is installed on most systems, but if you need it you can get
Note on permissions:
You may find that your Windows default permissions won't allow
downloading *.zip files, so R installs easily, but
the add-on programs, like RColorBrewer, do not. You
may need to change (temporarily) your browser's security
settings or the overall security settings from the Control
Panel. You may also find some help here:
R-FAQ 2.19 The Internet download functions fail.
Note to Microsoft Windows 7 and Vista users:
Default security settings won't allow a program to
unzip and save a file, so R won't be able to install
the mh1823 POD
package (or any other package) without your permission. To avoid this
difficulty, open R by right-clicking on the icon
and choosing "Run as administrator." After
installing the required packages and the mh1823 POD
package, R (with mh1823 POD)
can be run thereafter without administrator privileges, however if you
want to add another package from CRAN (Comprehensive R Archive Network)
you will need administrator privileges.