2859 search results for "ggplot"

PK analysis: Theoph again

April 19, 2015
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PK analysis: Theoph again

This week I wanted to repeat the Theoph PK analysis of two weeks ago in Stan. It also suddenly dawned on me. For a non-linear model in classical statistics we think it normal to provide good initializations. In contrast, for those MCMC samples I rememb...

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Analysing The Rock ‘n’ Roll Madrid Marathon

April 18, 2015
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Analysing The Rock ‘n’ Roll Madrid Marathon

Nobody’s going to win all the time. On the highway of life you can’t always be in the fast lane (Haruki Murakami, What I Talk About When I Talk About Running) I started running two years ago and one if my dreams is to run a marathon someday. One month ago I run my first … Continue reading...

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Using R in Myanmar (and other low-bandwidth environments)

April 15, 2015
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Using R in Myanmar (and other low-bandwidth environments)

R is already in use in well over 100 cities around the world, and now we can add another to the list: Yangon, Myanmar. Ben Marwick is a trainer with Software Carpentry (a non-profit organization devoted to improving basic computing skills among researchers in science, engineering, medicine, and other disciplines), and last month he visited the University of Yangon...

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The Problem with Propensity Scores

April 14, 2015
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The Problem with Propensity Scores

Are Propensity Scores Useful? Effect estimation for treatments using observation data isn't always straight forward. For example, it is very common that patients who are treated with a certain medication or procedure are healthier than those who are not treated. Those who aren't treated may not be...

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Create Colorful Graphs in R with RColorBrewer and Plotly

April 14, 2015
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Create Colorful Graphs in R with RColorBrewer and Plotly

RColorBrewer is an R package that allows users to create colourful graphs with pre-made color palettes that visualize data in a clear and distinguishable manner. There are 3 categories of palettes: qualitative, diverging, and sequential. Qualitative palettes employ different hues to create visual differences between classes. These palettes are suggested for nominal or categorical data sets. Sequential palettes

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All Aboard! The R Service Bus 6.2

April 14, 2015
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All Aboard! The R Service Bus 6.2

Tuesday 14 April 2015 - 14:35 As R has continued its growth in populary, it's made some exotic friends. Friends who speak other (programming) languages. Friends who live on servers and virtual machines. Friends who sometimes need to set aside t...

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Analysing Dracula

April 14, 2015
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Analysing Dracula

I recently read Bram Stoker’s Dracula, mostly because I wanted to rewatch the 1990s movie of the same name and see how badly they’d mutilated the story.  [Update 26/04/2015: I rewatched the 1992 movie and while it’s the most faithful version to the book, it has some weird additions and is utterly appalling.  People have been … Continue reading...

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Plotting tables alsongside charts in R

April 14, 2015
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Plotting tables alsongside charts in R

Occasionally I'd like to plot a table alongside a chart in R, e.g. to present summary statistics of the graph itself. Thanks to the gridExtra package this is quite straightforward. The function tableGrob creates a table like plot of a data frame, while...

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Slides from my talk on the broom package

April 13, 2015
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Slides from my talk on the broom package

This weekend I gave a presentation on my broom package for tidying model objects (see my introduction here) at the UP-STAT 2015 conference at SUNY Geneseo. I’m sharing the slides here, along with some highlights below. I first explained how broom fits with other tidy tools such as dplyr, tidyr and ggplot2 as...

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JSON serialization now even faster and prettier

April 12, 2015
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JSON serialization now even faster and prettier

The jsonlite package implements a robust, high performance JSON parser and generator for R, optimized for statistical data and the web. This week version 0.9.16 appeared on CRAN which has a new prettifying system, improved performance and some additional tweaks for the new mongolite package. Improved Performance Everyones favorite feature of jsonlite: performance....

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