****NEW LOCATION**** Date: Friday, April 11, 2014 Location: Northwest Building Room B-101, 52 Oxford Street Speaker: Hadley Wickham, Chief Scientist of RStudio; Assistant Professor of Statistics, Rice University Time: Informal lunch with speaker, 12:30pm. Talk, 1:00pm Title: Expressing Yourself in R Abstract: There are three main time sinks in any data analysis: 1. Figuring out what you want to do. 2. Turning a vague goal into a precise set of tasks (i.e. programming). 3. Actually crunching the numbers. A well-designed domain specific language (or DSL) tightly coupled to the problem domain can make all three pieces faster. In this talk, I’ll discuss two DSLs built in R: ggvis for visualisation and dplyr for data manipulation. These build on my previous packages ggplot2 and plyr, improving both expressivity and speed. Data visualisation and manipulation are key parts of data analysis. ggvis makes it easy to declaratively describe interactive web graphics. It combines a declarative syntax based on ggplot2 with shiny’s reactive programming model and vega’s declarative JS rendering system. dplyr implements the most important verbs of data manipulation in a datastore-agnostic fashion, so you can think about and compute with your data in the same way regardless of whether you’re working with a local in-memory data frame or a remote on-disk database. Co-sponsored by the Harvard School of Public Health (Biostatistics Dept). gCal<https://www.google.com/calendar/render?cid=http://www.seas.harvard.… iCal<webcal://www.seas.harvard.edu/calendar/event/76466/feed.ics> Speaker bio: Hadley Wickham is Chief Scientist at RStudio and Adjunct Professor of Statistics at Rice University. He's interested in building tools (computational and cognitive) that make data preparation, manipulation, visualization and analysis easier. He's developed over 30 R packages, for data analysis (ggplot2, plyr, reshape), making frustrating parts of R easier to use (lubridate for dates, stringr for strings, httr for accessing web APIs), and for streamlining the R package development process (roxygen2, testthat, devtools, lineprof, staticdocs). *********************** UPCOMING SEMINARS 4/25 Spiros Mancoridis (Drexel University)--- Location: Maxwell Dworkin G115, 33 Oxford Street (Cambridge) Please visit http://iacs.seas.harvard.edu/events to subscribe to our Google calendar, manage your subscription to this mailing list, or access video and audio recordings of previous seminars. _______________________________________________ Iacs-events mailing list Iacs-events(a)seas.harvard.edu https://lists.seas.harvard.edu/mailman/listinfo/iacs-events