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ggplot2: Elegant Graphics for Data Analysis, with author Hadley Wickham

  • Sep 17, 2009 · 6:30 PM
  • This location is shown only to members

For our Fall Kick-Off event, we are honored to host author and professor Hadley Wickham, who will give a brief introduction to his graphics package, ggplot2.

ggplot2 is a plotting system for R, based on the grammar of graphics, which tries to take the good parts of base and lattice graphics and none of the bad parts. It takes care of many of the fiddly details that make plotting a hassle (like drawing legends) as well as providing a powerful model of graphics that makes it easy to produce complex multi-layered graphics. (credit: ggplot2 web site)

SCHEDULE 6:00 - Doors open, Pizza sponsored by REvolution Computing
6:30 - Informal discussion, Q&A, "stump the chumps," ...
7:00 - Main presentation & following Q&A.
8:30 - Out the door!

LOCATION 1011 Evans Hall, Seminar Room, UC Berkeley Stats Dept, UC Berkeley

Berkeley Campus PDF


Taking BART
Evans is about a 15-20 minute uphill walk from the downtown Berkeley Bart station. If walking isn't an option the easiest is probably to get a taxi from the stand on Center St. If the driver doesn't know where Evans Hall is ask for the East Gate of campus - this will get you to the "Mining Circle" a road around a pond, Evans is the tallest building and on the West side of the pond.

University lots are open to the public after 5pm for an hourly fee.
The closest to Evans is the Upper Hearst Structure off Hearst Ave (see map above). If you want free street parking there are often spots along Hearst otherwise explore the streets north of Hearst.

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  • Karen W.

    In event you are looking at HW's data: What I should have answered when Hadley asked us why the odd construction dates on SF's houses? Answer: Because data confounds two kinds of dates: effective date and actual date. "Effective" reflects re-calc of year from replacement or upgrades of plumbing, foundation, kitchen, etc. 'Actual' is year thing completed initially. Caveat: some actuals re-constructed as older records not well kept or lost.

    February 21, 2011

  • Larry M.

    First meetup and I am still searching links and thinking of new ideas from what i saw there. Hadley said he'd get the presentation for the web page. Is that on here somewhere?

    September 24, 2009

  • Mike W.

    Thanks to Hadley, Michael, & Jim for a great presentation!! Michael, I just wanted to gently remind to post the presentation... I'm really excited to get a hold of that data set & play around with ggplot2 (which I just installed).


    September 18, 2009

  • A former member
    A former member

    This was great, it was an honor and privilege to attend, and I look forward to more meetings of this nature.

    September 18, 2009

  • Carlo C.

    the presenter covered several technical details that helps bring things into focus. the presentation was enhanced with a well-chosen data set. I would go so far to say that even if you had no intention of using ggplot2, the talk would still be valuable. I couldn't be more pleased.

    September 18, 2009

  • David S.

    Great talk. Learned some new things about ggplot2, and I'll definitely be using plyr more.

    September 18, 2009

  • A former member
    A former member

    Really terrific talk. I'm not a heavy R user, i go to python, ruby, matplotlib for data cleaning/ conversion, generating dev vs. validation samples, etc, but it was a real eye opener to see how little code cut through all the dimensionality.

    BTW, the dataset i couldn't remember name of is RETS, MLS data available daily, but I'm sure they make it difficult to spider, even thru Tor: cookies/sessions required, they watch web server logs in realtime, etc.

    September 17, 2009

  • A former member
    A former member

    Dynamic speaker - good thoughtful examples - plenty for the novice and expert alike. Friendly group - getting very big - will need large venues in the future.

    September 17, 2009

  • A former member
    A former member

    Nice presentation. I recently started experimenting with ggplot2, and found that the need to melt my data felt a little uncomfortable at first, and there was no mention in the presentation of the need to reshape the data frames in order to plot multiple curves, so in that respect it may have left some people who had no experience a bit mystified.
    I am looking forward to experimenting with plyr now, though.

    September 17, 2009

  • Ira S.

    Excellent, fast moving, fantastic sense of humor. Room was overcrowded and too hot.

    September 17, 2009

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