The non-commercial (academic) use of this software is free of charge. The only thing that is asked in return is to cite this software when results are used in publications.
November 12, 2006, 5:12 am :
Growth continues... During the month of October we measured a new record number of visitors and pageviews. Compared to last year there was an increase of +41% of visitors and +155% of pageviews. The newly introduced R modules are quickly becoming popular. We also appreciate the useful questions and suggestions from many users around the world - thank you!
We are currently testing the new version (1.1.21) - if everything goes well we expect to launch before the end of this year.
October 22, 2006, 3:35 pm :
Datasets are now stored in sessions The session manager now stores various types of datasets for the modules in Descriptive Statistics, and Statistical Distributions. The data are stored and made available whenever the user returns to a module that requires the same type of data (e.g. univariate or multivariate data). In other words, you can now hop from one module to another, without the need to re-enter the data.
October 15, 2006, 4:14 pm :
News flash Wessa.net and Xycoon.com are growing fast. The month of september was the best month (in terms of traffic) since startup. Compared with last year, September showed an increase of 43% in (unique) visitors and 80.1% in terms of pageviews. Most importantly, the bookmark-ratio (the percentage of visitors who make a bookmark) rose from 9.5% to 21%.
During the last few weeks many new R modules were released. Will this boost growth in months to come? In any case, we invite you to send us your feedback and suggestions (through the feedback form) to help us to improve this website even more...
October 2, 2006, 2:06 pm :
new R framework features The R modules framework now supports trivariate and multivariate data analysis. These features are part of the version 1.1.20 release, and have now been activated.
September 22, 2006, 12:06 pm :
Version 1.1.20 released Today we released version 1.1.20 with some remarkable new features: a history list, an improved user interface, much improved management of R servers (load balancing), pictures are now available when the output is directed to Word or Excel (also applies to history list).
September 14, 2006, 2:34 pm :
News feed from BBC News Today we added a news feed from the BBC News services. Articles are all related to Statistical Research. We welcome your feedback about this feature...
September 6, 2006, 3:07 pm :
New sections Today we launched two new sections: Statistical Distributions (Random Generation and Distribution Fitting), and Reproducible Results (interesting examples from various articles and textbooks). In the next days (and weeks) a collection of new R modules will be published in these sections.
September 3, 2006, 2:30 pm :
R Modules Framework v1.0.0 BETA After many months of hard work we are proud to release the new framework for R Modules (v.1.0.0 BETA). During the next few weeks we will test the Framework and release new features. The final (stable) release should be ready before November 2006.
Please, send your suggestions or questions to the R Modules
forum.
September 1, 2006, 6:11 am :
Buffer overflow bugfix We installed a bugfix for the buffer overflow problem (when using long data series) in the Harrell-Davies module. Many thanks to John J. Ely, Ph.D. who enabled us to reproduce the problem!
NOTE: the same problem still exists in bivariate modules (bivariate kernel density, and Kendall tau rank correlation). We hope to fix this problem soon.
September 1, 2006, 5:46 am :
Major Update in progress We are planning a major update of the R modules framework. This allows users to register as author and publish their software in the form of R modules (readily accessible by internet users through web interfaces without the need to download or install anything). The update will be gradually installed during the next few days. There will be (very) short periods of downtime during the update.
June 15, 2006, 7:37 am :
Increased memory User session memory has been increased on the new servers. We thank Caroline M. for pointing out this problem.
May 4, 2006, 7:45 am :
Bug fix (sorting algorithm)
The sorting order was reversed in some computations - due to a faulty system parameter (text sorting instead of numerical sorting). This led to various types of errors.
We believe that the error occured during the last server update - we apologize for any inconvenience. Special thanks to Peter S. who enabled us to find the cause of the problem!
February 5, 2006, 2:34 am :
Improvements and fixes A few (small) problems in the mathematical equation plotter, and multiple regression module have been fixed. Descriptive modules have been clearly grouped in univariate, bivariate, and trivariate categories.
January 12, 2006, 4:33 pm :
New Modules Three new modules were released during the past week: Financial Trading Performance, Univariate Kernel Density Estimation, and Bivariate Kernel Density Estimation. The modules can be found in the finance and descriptive statistics sections.
December 23, 2005, 11:50 am :
Version 1.1.18 released A new version was released today with new features that have been suggested by the many users who send their feedback - thank you!
Some highlights: improved navigation, scalable charts, white en blue themes (now available everywhere), more input fields, better design of output reports, etc...