SE_003399  mh1823 logo

MIL-HDBK-1823A
"Nondestructive Evaluation System
Reliability Assessment"

mh1823 Site Map

Instructions for downloading R:

If you already have R installed, skip this page and go here.

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 RR is open-source (free) and is supported by some of the most well known applied statisticians in the world.

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:

  1. Download the Windows binary files from the R website, http://www.r-project.org/.  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.
  2. Open R by clicking on the desk-top icon.
    1. (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.
    2. You will be presented with a new menu.  Choose "xlsx" which will then be installed in your R library.
    3. Close R, by clicking on the in the top right corner of the window.

We have some one-time loose ends to tie up:

  1. Right-click on the desktop icon and rename it to "mh1823 POD"
  2. Open the mh1823 POD sub-folder and copy its address.  It will look something like this:
    "C:\Documents and Settings\your name\My Documents\R-Projects\mh1823 POD"  Highlight and copy this address.
  3. 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 thereafter.

Note on JAVA: 

JAVA is installed on most systems, but if you need it you can get it here:
http://java.com/

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.