July 2016

Obtaining package performance data using Rperform

July 8, 2016 | Analytical Monk

“In God we trust. All others must bring data.” – W. Edwards Deming In a previous post, I had discussed how Rperform uses the grammar of graphics approach to visualize an R package’s performance in terms of runtime and memory usage. The visualizations contribute significantly towards Rperform’s mission to ...
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OpenImageR, an image processing toolkit

July 7, 2016 | mlampros

This blog post is about my recently released package on CRAN , OpenImageR. The package supports functions for image pre-processing, filtering and image recognition and it uses RccpArmadillo extensively to reduce the execution time of computat... [Read more...]

Introducing Badgecreatr, a package that places badges in your readme

July 7, 2016 | Roel M. Hogervorst

Introducing Badgecreatr, a package to create and place badges in your readme.Rmd file on Github. Badgecreatr will create the following badges (aka shields): Installation Install the package with install.packages("badgecreatr") How do you use badgecreatr? Badgecreatr has one main function: badgeplacer(). The most simple command is:
<span>badgecreatr</span><span>::</span><span>badgeplacer</span><span>(</span><span> </span><span>githubaccount</span><span> </span><span>=</span><span> </span><span>"yourgithubname"</span><span>,</span><span>githubrepo</span><span> </span><span>=</span><span> </span><span>"yourpackagename"</span><span>,</span><span> </span><span>branch</span><span> </span><span>=</span><span> </span><span>"master"</span><span>)</span><span>
</span>
If ...
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Bad Coder, Bad Coder!

July 7, 2016 | matloff

My title here is in the sense of “Bad dog, bad dog!”, a scolding I sometimes see dog owners use to tame their pets, and is also an allusion to Bad Reporter, a sometimes hilarious and always irreverent political comic strip in the San Francisco Chronicle. And my title is ...
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Express dplyr Part II

July 7, 2016 | Stevie P

This is Part II of the “Express dplyr” posting. If you haven’t already you might want to review Part I of this topic before proceeding although if you have some knowledge of dplyr then by all means proceed. Don’t worry – there are no tests ! In this second part ...
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Bridging The Political [Polygons] Gap with ggplot2

July 7, 2016 | hrbrmstr

The @pewresearch folks have been collecting political survey data for quite a while, and I noticed the visualization below referenced in a Tableau vis contest entry: Those are filled frequency polygons, which are super-easy to replicate in ggplot2, especially since Pew even kind of made the data available via their ...
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useR! 2016 Tutorials: Part 2

July 7, 2016 | Joseph Rickert

by Joseph Rickert Last week, I mentioned a few of the useR tutorials that I had the opportunity to attend. Here are the links to the slides and code for all but two of the tutorials: Regression Modeling Strategies and the rms Package - Frank Harrell Using Git and GitHub ... [Read more...]

Bad ways to run a user group

July 7, 2016 | Steph

I love user groups and I always want there to be more. I’m not a perfect organiser but I run reasonable groups. When I see organisers doing it badly, it makes me sad. There’s lots of great ways to run a user group, but I thought I’d ...
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Implementing Apriori Algorithm in R

July 7, 2016 | Nupur Gulalkari

There are a bunch of blogs out there posted that show how to implement apriori algorithm in R. However, when I was working on the same, I hit a roadblock since the data was neither in single format, nor in basket(Step 2 explains what a basket format is). I spent ... [Read more...]

Latest on the Julia Language (vs. R)

July 6, 2016 | matloff

I’ve written before about the Julia language. As someone who is very active in the R community, I am biased of course, and have been (and remain) a skeptic about Julia. But I would like to report on a wonderful talk I attended today at Stanford. To my surprise ... [Read more...]

Fatal Police Shootings Across the U.S.

July 6, 2016 | Julia Silge

I have been full of grief and sadness and some anger in the wake of yet more videos going viral in the past couple days showing black men being killed by police officers. I am not an expert on what it means to be a person of color in the ... [Read more...]

How many calories should you eat per day?

July 6, 2016 | dan

How many calories should you eat per day, based on your age, sex, and activity level? Here are the US government's recommendations. The post How many calories should you eat per day? appeared first on Decision Science News. [Read more...]

Data Shape Transformation With Reshape()

July 6, 2016 | John Akwei

reshape() is an R function that accesses “observations” in grouped dataset columns and “records” in dataset rows, in order to programmatically transform the dataset shape into “long” or “wide” format. Required dataframe: data1 [Read more...]
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