Hadley Wickham

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Hadley Wickham
Residence United States
Alma mater Iowa State University, University of Auckland
Thesis Practical tools for exploring data and models (2008)
Doctoral advisors
Known for R programming language packages
Notable awards

Hadley Wickham is a statistician from New Zealand who is currently Chief Scientist at RStudio[1][2] and an adjunct Assistant Professor of statistics at Rice University.[3] He is best known for his development of open-source statistical analysis software packages for R (programming language) that implement logics of data visualisation and data transformation. Wickham received a Bachelors of Human Biology, and a B.Sc. and a M.Sc. in statistics at the University of Auckland in 1999–2004 and his PhD at Iowa State University in 2008 under the supervision of Di Cook and Heike Hoffman.[4][5] In 2006 he was awarded the John Chambers Award for Statistical Computing for his work developing tools for data reshaping and visualisation.[6]

He is a prominent and active member of the R user community and has developed several notable and widely used packages including ggplot2, plyr, dplyr, and reshape2.[3][7] Wickham's data analysis packages for R are collectively known as the 'tidyverse'.[8] Wickham's packages and writing are known for advocating a 'tidy' approach to data import, analysis and modelling methods. According to Wickham's tidy approach, each variable should be a column, each observation should be a row, and each type of observational unit should be a table.[9]

He was named a Fellow by the American Statistical Association in 2015 for "pivotal contributions to statistical practice through innovative and pioneering research in statistical graphics and computing".[10]


  • Wickham, Hadley (2015). R Packages. Sebastopol, CA: O'Reilly Media, Inc. ISBN 978-1491910597. 
  • Wickham, Hadley (2014). Advanced R. New York: Chapman & Hall/CRC The R Series. ISBN 978-1466586963. 
  • Wickham, Hadley (2011). "The split-apply-combine strategy for data analysis". Journal of Statistical Software. 40 (1): 1–29. 
  • Wickham, Hadley (2010). "A layered grammar of graphics". Journal of Computational and Graphical Statistics. 19 (1): 3–28. 
  • Wickham, Hadley (2010). "stringr: modern, consistent string processing". The R Journal. 2 (2): 3–28. 
  • Wickham, Hadley (2009). ggplot2: Elegant Graphics for Data Analysis (Use R!). New York: Springer. ISBN 0387981403. 
  • Wickham, Hadley (2007). "Reshaping data with the reshape package". Journal of Statistical Software. 21 (12): 1–20. 


  1. ^ "Washington Statistical Society October 2013 Newsletter". Washstat.org. Retrieved 2014-02-12. 
  2. ^ "60+ R resources to improve your data skills ( - Software )". News.idg.no. Retrieved 2014-02-12. 
  3. ^ a b "About - RStudio". Retrieved 2014-08-13. 
  4. ^ Hadley Alexander Wickham, "Practical tools for exploring data and models", Ph.D. dissertation, Iowa State University, 2008 [1]
  5. ^ "The R-Files: Hadley Wickham". 
  6. ^ "John Chambers Award Past winners". ASA Sections on Statistical Computing, Statistical Graphics,. Retrieved 2014-08-12. 
  7. ^ "Top 100 R Packages for 2013 (Jan-May)!". R-statistics blog. Retrieved 2014-08-12. 
  8. ^ "Welcome to the Tidyverse". Revolution Analytics. Retrieved 2016-09-21. 
  9. ^ Wickham, Hadley (2014). "Tidy Data". Journal of Statistical Software. 59 (10). doi:10.18637/jss.v059.i10. 
  10. ^ "ASA names 62 fellows" (PDF). American Statistical Association. Retrieved 14 November 2015. 

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