2499 search results for "ggplot2"

Reading the Gauss-Markov theorem

August 26, 2014
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Reading the Gauss-Markov theorem

What is the Gauss-Markov theorem? From “The Cambridge Dictionary of Statistics” B. S. Everitt, 2nd Edition: A theorem that proves that if the error terms in a multiple regression have the same variance and are uncorrelated, then the estimators of the parameters in the model produced by least squares estimation are better (in the sense Related posts:

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Announcing dtupdate v1.0 – R Package Reporter/Updater for the devtools Universe

August 21, 2014
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The dtupdate package has functions that attempt to figure out which packages have non-CRAN versions (currently only looks for github ones) and then tries to figure out which ones have updates (i.e. the github version is > local version). It provides an option (not recommended) to auto-update any packages with newer development versions. The reason auto updating is...

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Do your "data janitor work" like a boss with dplyr

August 20, 2014
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Do your "data janitor work" like a boss with dplyr

Data “janitor-work” The New York Times recently ran a piece on wrangling and cleaning data: “For Big-Data Scientists, ‘Janitor Work’ Is Key Hurdle to Insights” Whether you call it “janitor-work,” wrangling/munging, cleaning/cleansing/scrubbing, tidying, or something else, the article above is worth a read (even though it implicitly denigrates the important work that your housekeeping staff does). It’s...

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Example 2014.10: Panel by a continuous variable

August 18, 2014
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Example 2014.10: Panel by a continuous variable

In Example 8.40, side-by-side histograms, we showed how to generate histograms for some continuous variable, for each level of a categorical variable in a data set. An anonymous reader asked how we would do this if both the variables were continuous. ...

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Winston Chang’s “Interactive Graphics with ggvis” at useR! 2014

August 14, 2014
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gggggviz-Greenshot_2014-08-15_00-07-06

Winston Chang’s “Interactive Graphics with ggvis” talk at useR! 2014 was in many ways a...

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Visit of Di Cook

August 12, 2014
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Visit of Di Cook

Next week, Professor Di Cook from Iowa State University is visiting my research group at Monash University. Di is a world leader in data visualization, and is especially well-known for her work on interactive graphics and the XGobi and GGobi software. See her book with Deb Swayne for details. For those wanting to hear her speak, read on. Research seminar She...

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Venn figures go wrong

August 12, 2014
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Venn figures go wrong

I thought nothing could top the classic “6-way Venn banana”, featured in The banana (Musa acuminata) genome and the evolution of monocotyledonous plants. That is until I saw Figure 3 from Compact genome of the Antarctic midge is likely an adaptation to an extreme environment. What’s odd is that Figure 2 in the latter paper

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A Conversation with Hadley Wickham – the useR! 2014 interview

August 11, 2014
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hadley_Untitled

Hadley Wickham is famous. He’s not Kardashian famous, but walking around useR! and seeing the community’s reaction to him, there’s no question, he’s ‘R famous’. If you have the good fortune to see his talks, tutorials, or sessions in person, you owe it to yourself to do so.

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Guns are cool – Regions

August 10, 2014
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Guns are cool – Regions

This was supposed to be a post in which General Social Surveys (GSS) data were used to understand a bit more about the causation of differences between states. Thus it was to give additioanl insight than my previous post; Guns are Cool - Differenc...

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Making Maps with a Punchline

August 6, 2014
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Making Maps with a Punchline

I’ve had a lifelong fascination with maps, and working with R definitely enables my map...

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