329 search results for "boxplot"

Color Palettes in RGB Space

June 20, 2012
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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

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

June 2, 2012
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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...

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Cross-valitation variability example, part I

May 26, 2012
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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 ...

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

May 18, 2012
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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...

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Emulating local static variables in R

May 17, 2012
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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...

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Getting Started with R Markdown, knitr, and Rstudio 0.96

May 16, 2012
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Getting Started with R Markdown, knitr, and Rstudio 0.96

This post examines the features of R Markdown using knitr in Rstudio 0.96. This combination of tools provides an exciting improvement in usability for reproducible analysis. Specifically, this post (1) discusses getting started with R Markdown and knitr in Rstudio 0.96; (2) provides a basic example of producing console output and plots...

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Global Homicide Rates by Government Type

May 16, 2012
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Global Homicide Rates by Government Type

Surprising results For purposes of this article, any mention of homicide rates refers to reported homicide rates. Open vs Closed In mostly open countries (full democracies), the homicide rates are rather low when compared to other types of...

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“Introduction to R” public course

May 8, 2012
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Milano R net, in collaboration with Quantide, organizes an "Introduction to R" course Milano; June 7-8, 2012 Continue reading →

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playitbyr 0.2-1: data through sound, now with layers, facets, and more pleasure

May 6, 2012
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The recent Sonification Handbook has a chapter devoted to exploratory data analysis using sound. With some help from Sam Ferguson, one of the chapter's authors, I've made it easy to implement those techniques using R with playitbyr.

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Improving script_001: “Monitor”

May 6, 2012
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Improving script_001: “Monitor”

After having a look to this video: http://www.screenr.com/UxH8 from rtwotutorials, and reading some tutorials, I decided to modified the script from the previous post: Practicing Script with “ R”: Monitor , in order to make it more r...

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