Hadley Wickham

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

Hadley Wickham is a statistician from New Zealand who is currently Chief Scientist at RStudio[1][2] and an adjunct Professor of statistics at the University of Auckland[3], Stanford University[4], and Rice University.[5] 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's packages and writing are known for advocating a tidy data approach to data import, analysis and modelling methods.


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 Hofmann.[6][7] In 2006 he was awarded the John Chambers Award for Statistical Computing for his work developing tools for data reshaping and visualisation.[8] His sister Charlotte Wickham is also a statistician.

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.[5][9] Wickham's data analysis packages for R are collectively known as the 'tidyverse'.[10] 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.[11]

Wickham 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".[12]


  • Wickham, Hadley; Grolemund, Garrett (2017). R for Data Science : Import, Tidy, Transform, Visualize, and Model Data. Sebastopol, CA: O'Reilly Media. ISBN 1491910399. OCLC 968213225.
  • 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". Washington Statistical Society. Retrieved 2014-02-12.
  2. ^ "60+ R resources to improve your data skills ( - Software )". News.idg.no. Retrieved 2014-02-12.
  3. ^ "University of Auckland". Retrieved 2017-09-03.
  4. ^ "Hadley Wickham's Profile - Stanford Profiles". Retrieved 2017-09-03.
  5. ^ a b "About - RStudio". Retrieved 2014-08-13.
  6. ^ Hadley Alexander Wickham, "Practical tools for exploring data and models", Ph.D. dissertation, Iowa State University, 2008 [1]
  7. ^ "The R-Files: Hadley Wickham".
  8. ^ "John Chambers Award Past winners". ASA Sections on Statistical Computing, Statistical Graphics,. Retrieved 2014-08-12.
  9. ^ "Top 100 R Packages for 2013 (Jan-May)!". R-statistics blog. Retrieved 2014-08-12.
  10. ^ "Welcome to the Tidyverse". Revolution Analytics. Retrieved 2016-09-21.
  11. ^ Wickham, Hadley (2014). "Tidy Data". Journal of Statistical Software. 59 (10). doi:10.18637/jss.v059.i10.
  12. ^ "ASA names 62 fellows" (PDF). American Statistical Association. Retrieved 14 November 2015.

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