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For the following resources, authors have explicitly given the permission to include their material on the R programming wikibook. Remember that even if they have given their permission, they should be correctly cited.
- R-statistics (the R category) (A link to a post which provides proper licence for approving this content for use).
- GETTING GENETICS DONE - R tag. The R content is available from here: http://gettinggeneticsdone.blogspot.com/search/label/R. The R code is copyrighted under The open source BSD license (as is described here: http://gettinggeneticsdone.blogspot.com/p/copyright.html). The content itself is licensed under a Creative Commons Attribution-Share-Alike 3.0 Unported License (as is shown at the bottom of every post). Bottom line - the R code and written content can be used freely (with attribution).
- Struggling Through Problems: http://strugglingthroughproblems.blogspot.com/search/label/R
- Backsidesmack R-stuff category. Copyright information is in the footer and explicit permission is in this post
- Al3xandr3: http://al3xandr3.github.com/tags/r.html
- Cloudnumbers.com (the R category): Posts about high-performance computing and cloud computing with R. A link to a post which provides proper license for approving this content for use.
- The R Tutorial Series (http://rtutorialseries.blogspot.com) by John M. Quick provides a collection of user-friendly guides to researchers, students, and others who want to learn how to use R for their statistical analyses. Its content is available for use in the R Programming wikibook under a Creative Commons BY-SA License.
- Exploring Indian census data using R and useful scripts to download weather related data from websites. The content is available for use in the R wikibook under cc-sa license.
- Plain Data Analysis tips www.danielmarcelino.com . Most of the topics in the blog is biased toward the social sciences.