Today I’m extraordinarily pleased because today I solved an actuall real world problem using R. Sure, I’ve solved many esoteric statistical problems with R, but I’m not sure if any of those solutions have escaped the digital world and made some impact ex silico. It is now ... [Read more...]

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I can say that this FTA boosted chilean exports to Asia a lot and it has slowly helped to export more non-traditional products year by year. The charts available here are about imports and exports in Chile, and many more related to trade. This was made... [Read more...]

A colleague recently questioned whether the loge(2)/K, where K is the Brody growth coefficient in the typical parameterization of the von Bertalanffy growth function, represents the “amount of time it takes for a fish to grow from any length to a length halfway between the initial length and the ... [Read more...]

I just started reading Alvin Roth’s book “Who gets What - And why?” and it already got me thinking. The book discusses the principles of markets and market design using various examples. One starting point is the transition of markets into being commodity markets. Simplified; in a commodity market ... [Read more...]

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useResearch This is the main part of the proposal Tyler Rinker and I submitted to the first ISC call for proposals by the R-Consortium. Our next post will describe useResearch: the solution we ended up building, despite not getting funded. Some deta... [Read more...]

useResearch This is the main part of the proposal Tyler Rinker and I submitted to the first ISC call for proposals by the R-Consortium. Our next post will describe useResearch: the solution we ended up building, despite not getting funded. Some details of the how part of our proposal have ... [Read more...]

Good design is important. Don’t believe me, maybe you’ll like this TED radio hour episode. Good design is especially important in data visualization and data communication. Colors, scales, jitter, figure type are all decisions that need to be consi... [Read more...]

Who lies the most in US politics? Most Americans, and anyone that follows US politics, will be aware of the tremendous changes and volatility that has struck the US political landscape in the past year. The ascent of Donald Trump from a billionaire entertainer to a fully fledged presidential candidate, ... [Read more...]

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Randy George, an expert in web map applications, has been fascinated with computer graphics (especially maps) since the early '80s. For much of that time, he says, the technology for mapping has been pretty static: The main stay of web mapping applications for the last couple of decades has ... [Read more...]

Creating a radial barchart is fairly easy using plotly. In this post we’ll focus on modifying a radial line chart to make it look like a bar chart so come up with a nice visualization for CO2 emissions. The visualization is inspired by this awesome chart. [crayon-575b9ada92214977293988/] [Read more...]

You can establish solid tests in R with a little planning and practice - we walk step by step through testing a function in R and even setup an easy-to-use framework for repeatability that you can download and start using right away. [Read more...]

Welcome to Introduction to R for Data Science Session 7: Multiple Regression + Dummy Coding, Partial and Part Correlations [Multiple Linear Regression in R. Dummy coding: various ways to do it in R. Factors. Inspecting the multiple regression model: regression coefficients and their interpretation, confidence intervals, predictions. Introducing {lattice} plots + ggplot2. Assumptions: ... [Read more...]

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by Joseph Rickert IBM Joins the R Consortium This past Monday at the Spark Summit in San Francisco IBM announced that it had joined the R Consortium as a "Platinum" member. This is very good news with respect to the development and growth of the R language, the health of ... [Read more...]