3150 search results for "ggplot"

The Andrica’s Conjecture

August 27, 2014
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The Andrica’s Conjecture

Things should be as simple as possible, but not simpler (Albert Einstein) Following with conjectures about primes, it is time for Andrica’s conjecture. The great mathematician Leonhard Euler (1707-1783) pointed: “Mathematicians have tried with no success to find some kind of order in the sequence of prime numbers and today we have reasons to believe that

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Adding CITATION to your R package

August 27, 2014
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Adding CITATION to your R package

Original post from Robin's Blog:Software is very important in science – but good software takes time and effort that could be used to do other work instead. I believe that it is important to do this work – but to make it worthwhile, people need to get credit for their work, and in academia that...

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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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googleVis!!!

August 20, 2014
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googleVis!!!

I'm back working on R&graphics at last. I've made some progress on the shiny+rgl front, but haven't really had the time to create anything which could be posted here... However, it's been a while, so today I thought I'd take advantage of the releas...

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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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Visualize pre-post comparison of intervention #rstats

August 19, 2014
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Visualize pre-post comparison of intervention #rstats

My sjPlot-package was just updated on CRAN, introducing a new function called sjp.emm.int to plot estimated marginal means (least-squares means) of linear models with interaction terms. Or: plotting adjusted means of an ANCOVA. The idea to this function came up when we wanted to analyze the effect of an intervention (an educational programme on knowledge

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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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Quicksort speed, just in time compiling and vectorizing

August 17, 2014
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Quicksort speed, just in time compiling and vectorizing

I was reading the Julia documentation the other day. They do speed comparisons to other languages. Obviously R does not come out very well. The R code for quicksort is here and I noticed it was not vectorized at all. So I wondered if it could be improv...

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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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