1704 search results for "tutorial"

Producing student/teacher versions from a single Sweave file

December 16, 2014
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Producing student/teacher versions from a single Sweave file

This tutorial describes how to integrate computable R code (and outputs) in a LaTeX documents in a such a way that a single file can generate two (or more) PDF files. This trick is particularly useful for creating worksheets for R courses. A very small introduction to integrating R code in LaTeX files R code

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How to analyze a new dataset (or, analyzing ‘supercar’ data, part 1)

December 16, 2014
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I love cars. The way they sound. The engineering. The craftsmanship. And let’s be honest: fast cars are just fun. Given my love of cars, I frequently watch Top Gear clips on YouTube. A couple of weeks ago, I stumbled across this:   Watching the video, I’m thinking, “253 miles per hour? You’ve got to The post

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Cartography with complex survey data

December 15, 2014
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Cartography with complex survey data

Visualizing complex survey data is something of an art. If the data has been collected and aggregated to geographic units (say, counties or states), a choropleth is one option. But if the data aren't so neatly arranged, making visual sense often requires some form of smoothing to represent it on a map. R, of course, has a number of...

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Review: Data Science at the Command Line

December 15, 2014
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Review: Data Science at the Command Line

Admission: I didn’t really know how computers worked until around 2012. For the majority of my career, I’ve worked for large companies with centralized IT functions. Like many statisticians, I fell into a comfortable position of learning SAS in a Windows environment, had Ops people to fix any Unix problems I’d run into and DBAs to

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Hierarchical Clustering with R (feat. D3.js and Shiny)

December 14, 2014
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Hierarchical Clustering with R (feat. D3.js and Shiny)

Agglomerative hierarchical clustering is a simple, intuitive and well-understood method for clustering data points. I used it with good results in a project to estimate the true geographical position of objects based on measured estimates. With this tutorial I would … Continue reading →

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Exploratory Data Analysis – All Blog Posts on The Chemical Statistician

Exploratory Data Analysis – All Blog Posts on The Chemical Statistician

This series of posts introduced various methods of exploratory data analysis, providing theoretical backgrounds and practical examples.  Fully commented and readily usable R scripts are available for all topics for you to copy and paste for your own analysis!  Most of these posts involve data visualization and plotting, and I include a lot of detail and

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Exploratory Data Analysis – All Blog Posts on The Chemical Statistician

Exploratory Data Analysis – All Blog Posts on The Chemical Statistician

This series of posts introduced various methods of exploratory data analysis, providing theoretical backgrounds and practical examples.  Fully commented and readily usable R scripts are available for all topics for you to copy and paste for your own analysis!  Most of these posts involve data visualization and plotting, and I include a lot of detail and

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Tim Bowles on multivariate stats with vegan

December 9, 2014
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Today, Tim Bowles gave this presentation on the vegan package to the Davis R Users’ Group. The screencast and slides are below. You can also download Tim’s RStudio project with all the code, data, figures, and slides presented here. Thanks to Tim for a great session!

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Quandl Chapter 2: The Democratization of Commercial Data

December 9, 2014
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by Tammer Kamel Quandl's Founder About 22 months ago I had the privilege of introducing Quandl to the world on this blog. At that time Quandl had about 2 million datasets and a few hundred users. (And we thought that was fabulous.) Now, at the end of 2014, we have some 12 million datasets on the site and tens...

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Learn ggvis with RStudio and DataCamp

December 5, 2014
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Learn ggvis with RStudio and DataCamp

We’ve teamed up with DataCamp to make a self-paced online course that teaches ggvis, the newest data visualization package by Hadley Wickham and Winston Chang. The ggvis course pairs challenging exercises, interactive feedback, and “to the point” videos to let you learn ggvis in a guided way. In the course, you will learn how to

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