372 search results for "boxplot"

Labeled outliers in R boxplot

Labeled outliers in R boxplot

Boxplots are a good way to get some insight in your data, and while R provides a fine ‘boxplot’ function, it doesn’t label the outliers in the graph. However, with a little code you can add labels yourself:The numbers plotted next to ...

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From cats to zombies, Wednesday at useR2015

July 1, 2015
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From cats to zombies, Wednesday at useR2015

The morning opened with someone who I was too bleary eyed to work out who it was. Possibly the dean of the University of Aalborg. Anyway, he said that this is the largest ever useR conference, and the first ever in a Nordic country. Take that, Norway! Also, considering that there are now quite a

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Visualization and Analysis of Reddit’s "The Button" Data

June 15, 2015
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Visualization and Analysis of Reddit’s "The Button" Data

IntroductionPeople are weird. And if there's anything that's greater collective proof of this fact than Reddit, you'd be hard pressed to find it.I tend to put reddit in the same bucket as companies like Google, Amazon and Netflix, where they have enoug...

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PERFORMANCE: Calling R_CheckUserInterrupt() every 256 iteration is actually faster than ever 1,000,000 iteration

June 5, 2015
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PERFORMANCE: Calling R_CheckUserInterrupt() every 256 iteration is actually faster than ever 1,000,000 iteration

If your native code takes more than a few seconds to finish, it is a nice courtesy to the user to check for user interrupts (Ctrl-C) once in a while, say, every 1,000 or 1,000,000 iteration. The C-level API of R provides R_CheckUserInterrupt() for this (see 'Writing R Extensions' for more information on this function). Here's what...

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Vega.jl Rebooted – Now with 100% More Pie and Donut Charts!

May 21, 2015
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Vega.jl Rebooted – Now with 100% More Pie and Donut Charts!

          Mmmmm, chartjunk! Rebooting Vega.jl Recently, I’ve found myself without a project to hack on, and I’ve always been interested in learning more about browser-based visualization. So I decided to revive the work that John Myles White had done in building Vega.jl nearly two years ago. And since I’ll be giving

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Course on using Oracle R Enterprise

Course on using Oracle R Enterprise

BNOSAC will be giving from June 08 up to June 12 a 5-day crash course on the use of R using Oracle R Enterprise. The course is given together with our Oracle Partner in Leuven, Belgium. If you are interested in attending, contact us for further details. For R users who aren't aware of this yet....

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Getting started with PostgreSQL in R

May 18, 2015
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Getting started with PostgreSQL in R

When dealing with large datasets that potentially exceed the memory of your machine it is nice to have another possibility such as your own server with an SQL/PostgreSQL database on it, where you can query the data in smaller digestible chunks. For example, recently I was facing a financial dataset of 5 GB. Although 5

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The perfect t-test

May 18, 2015
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The perfect t-test

I've created an easy to use R script that will import your data, and performs and writes up a state-of-the-art dependent or independent t-test. The goal of this script is to examine whether more researcher-centered statistical tools (i.e., a one-click analysis script that checks normality assumptions, calculates effect sizes and their confidence intervals, creates good figures,...

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Recent Common Ancestors: Simple Model

May 15, 2015
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Recent Common Ancestors: Simple Model

An interesting paper (Modelling the recent common ancestry of all living humans, Nature, 431, 562–566, 2004) by Rohde, Olson and Chang concludes with the words: Further work is needed to determine the effect of this common ancestry on patterns of genetic variation in structured populations. But to the extent that ancestry is considered in genealogical The post

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Upcoming Tutorial: Analyzing US Census Data in R

May 11, 2015
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Upcoming Tutorial: Analyzing US Census Data in R

Today I am pleased to announce that on May 21 I will run a tutorial titled Analyzing US Census Data in R. While I have spoken at conferences before, this is my first time running a tutorial. My hope is that everyone who participates will learn something interesting about the demographics of the state, county

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