324 search results for "boxplot"

Graphical insights from the 2012 UseR! Meeting

About this time last month, I attended the 2012 UseR! Meeting.  Now an annual event, this series of conferences started in Europe in 2004 as an every-other-year gathering that now seems to alternate between the U.S. and Europe.  This year’s meeting was held on the VanderbiltUniversity campus in Nashville, TN, and it was attended by about 500 R aficionados,...

Read more »

The inner workings of R objects

June 29, 2012
By
The inner workings of R objects

R is an object oriented language. You provide a name and R supplies that name with various properties. In the simplest case, you can assign a number to a name. This will only have a few attributes, such as its class, length etc: i <- 5 names(i) #NULL class(i) # "integer" attr(i, "name") #NULL dim(i)

Read more »

useR 2012: main conference braindump

June 24, 2012
By
useR 2012: main conference braindump

I knew R was versatile, but DANG, people do a lot with it: > > … I don’t think anyone actually believes that R is designed to make *everyone* happy. For me, R does about 99% of the things I … Continue reading →

Read more »

The R-Podcast Screencast 2: Visualization with ggplot2

June 23, 2012
By

Here is the second screencast episode of the R-Podcast to accompany episode 8 of the R-Podcast: Visualization with ggplot2. In this screencast I demonstrate a real-time session of using ggplot2 to create boxplots for a visualization of hockey attendance in the NHL. The R code created in this screencast is available in our GitHub repository,

Read more »

The R-Podcast Episode 8: Visualization with ggplot2

June 20, 2012
By

I’m happy to present this jam-packed episode of the R-Podcast dedicated to using the ggplot2 package for visualization. This episode will have a companion screencast released in the next few days. I use data from the Hockey Summary Project to demonstrate how to create a series of boxplots of NHL regular season attendance for each

Read more »

Color Palettes in RGB Space

June 20, 2012
By
Color Palettes in RGB Space

Introduction I've recently been interested in how to communicate information using color. I don't know much about the field of Color Theory, but it's an interesting topic to me. The selection of color palettes, in particular, has been a topic I've been faced with lately. I downloaded 18 different sequential color palettes from Cynthia Brewer's

Read more »

11 Million Yellow Slips – City of Toronto Parking Tickets, 2008-2011

June 2, 2012
By
11 Million Yellow Slips – City of Toronto Parking Tickets, 2008-2011

IntroductionI don't know about you, but I really hate getting parking tickets. Sometimes I feel like it's all just a giant cash grab. Really? I can't park there between the hours of 11 and 3, but every other time is okay? Well, why the hell not?Bu...

Read more »

Cross-valitation variability example, part I

May 26, 2012
By
Cross-valitation variability example, part I

Recently I had a discussion with a student about variability of results obtained from cross-validation procedure. While the subject is well known there are not many examples on the web showing it, so I have written its simple presentation.Results from ...

Read more »

Example Reproducible Report using R Markdown: Analysis of California Schools Test Data

May 18, 2012
By
Example Reproducible Report using R Markdown:  Analysis of California Schools Test Data

This is a quick set of analyses of the California Test Score dataset. The post was produced using R Markdown in RStudio 0.96. The main purpose of this post is to provide a case study of using R Markdown to prepare a quick reproducible report. It provides examples of using plots, output, in-line R code, and...

Read more »

Emulating local static variables in R

May 17, 2012
By
Emulating local static variables in R

Recently I was writing a code allowing to plot multiple ggplot2 plots on one page. I wanted to replicate standard behavior of  plot  function that plots graphs in sequence according to  mfrow/ mfcol option in par...

Read more »