[R-pkgs] ez version 3.0

From: Mike Lawrence <Mike.Lawrence_at_dal.ca>
Date: Tue, 08 Feb 2011 12:37:52 -0400

Hi folks,

I'd like to announce the release of version 3.0 of the "ez" package. This package was developed to aid those that are new to statistical programming. Over the course of several years of helping colleagues and students learn R, I observed that folks are often initially turned off R because they have difficulty obtaining SPSS-like results quickly (SPSS is the dominant environment in my field, psychology). ez attempts to fill this gap, providing quick and easy analysis and graphics for common experimental designs. By easing the early portions of the R learning curve, ez hopes to promote the spread of R as a means of open source and reproducible analysis.

ez may also be of interest to more advanced users as it includes the "ezMixed()" function, which automates the assessment of fixed effects in a mixed effects modelling context, and the "ezPredict()" function, which obtains predictions for the fixed effects from a mixed effects model.

****Installing ez****

Version 3.0 of ez requires that you have R 2.12.1 installed, which is the latest version of R as of this notice. If you have an older version of R you will need to update R by installing the latest version (from http://cran.r-project.org/) before installing ez.

Windows and linux users should be able to install the latest version by running the command:
install.packages( 'ez' )

Mac users should be able to install the latest version by running the commands:

install.packages( c( 'car' , 'reshape2' , 'plyr' , 'ggplot2' ,
'stringr' , 'lme4' , 'Matrix' ) )
install.packages( 'ez' , type='source' , dependencies=F )

Once installed, running the following commands will load ez and bring up its help page that links to descriptions of all ez's functions: library( ez )

****Big changes in version 3.0****

****Also new****

As noted above, this version fixes a big bug in "ezMixed()" about which I wish I could have warned users sooner. To facilitate future rapid notification of users, I've created a discussion group (http://groups.google.com/group/ez4r) to which users can/should subscribe to keep up to date on development news. Additionally, I created a project page on github
(https://github.com/mike-lawrence/ez/issues) where users can submit bug reports and feature requests. Finally, I encourage users to rate or review ez (and any other packages you use) at crantastic.org (http://crantastic.org/packages/ez).

****Official CHANGES entry****
- added urls in all documentation pointing to the
bug-report/feature-request site
(https://github.com/mike-lawrence/ez/issues) and the discussion group (http://groups.google.com/group/ez4r).
- changed reshape dependency to reshape2

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https://stat.ethz.ch/mailman/listinfo/r-packages Received on Sat 12 Feb 2011 - 08:30:06 EST

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