2402 search results for "ggplot"

Time series plots in R

October 23, 2013
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Time series plots in R

I recently coauthored a couple of papers on trends in environmental data (Curtis & Simpson in press; Monteith et al. in press), which we estimated using GAMs. Both papers included plots like the one shown below wherein we show the estimated trend and associated point-wise 95% confidence interval, plus some other markings. The coloured sections show...

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Pre-calculating large tables of values

Pre-calculating large tables of values

Pre-calculating large tables of values I'm currently working on a project where we want to know, based on a euclidian distance measure, what is the probability that the value is a match to the another value. i.e. given an actual value, and a theoretical value from calculation, what is the probability that they are the same? This can be calculated...

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OA week – A simple use case for programmatic access to PLOS full text

October 21, 2013
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OA week – A simple use case for programmatic access to PLOS full text

Open access week is here! We love open access, and think it's extremely important to publish in open access journals. One of the many benefits of open access literature is that we likely can use the text of articles in OA journals for many things, including text-mining. What's even more awesome is some OA publishers provide API (application...

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When did “How I Met Your Mother” become less legen.. wait for it…

October 21, 2013
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When did “How I Met Your Mother” become less legen.. wait for it…

…dary!  Or, as you’ll see below, when did it become slightly less legendary?  The analysis in this post was inspired by DiffusePrioR’s analysis of when The Simpsons became less Cromulent. When I read his post a while back, I thought … Continue reading →

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Bar plot with error bars in R

October 20, 2013
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Bar plot with error bars in R

Here's a simple way to make a bar plot with error bars three ways: standard deviation, standard error of the mean, and a 95% confidence interval. The key step is to precalculate the statistics for ggplot2. Continue reading →

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Plotting Times of Discrete Events

October 19, 2013
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Plotting Times of Discrete Events

I recently enjoyed reading O’Hara, R. B., & Kotze, D. J. (2010). Do not log-transform count data. Methods in Ecology and Evolution, 1(2), 118–122. doi:10.1111/j.2041-210X.2010.00021.x. The article prompted me to think about processes involving discrete events and how these might be presented graphically. I am not talking about counts (which are well represented by a

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Fantasy Football Modeling with R

October 16, 2013
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Fantasy Football Modeling with R

Boris Chen, a data scientist for the New York Times, has been running since August a weekly blog with statistical analysis of NFL players, as fodder for Fantasy Football players around the country. Here's how he describes what he does: My model pulls aggregated expert rankings from fantasypros, and I pass that data into a machine learning clustering algorithm...

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Cont model back after a year

October 16, 2013
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Cont model back after a year

During ESSA2013 conference I had a discussion about Cont model I have commented a year ago.In original paper Cont highlights that his model produces distribution of returns characterized by positive excess kurtosis. In this post I want to investig...

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Creating Colorblind-Friendly Figures

October 16, 2013
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Creating Colorblind-Friendly Figures

Color is often used to display an extra dimension in plots of scientific data. Unfortunately, everyone does not decode color in exactly the same way. This is especially true for those with color vision deficiency, which affects up to 8 percent of the population in its 2 most common forms. As …

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Prices of houses in the Netherlands

October 13, 2013
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Prices of houses in the Netherlands

The last couple of days I read a number of times about stabilization in house prices which had been dropping due to the crisis. And you get hit by numbers such as change against Q2 2013 or Q3 2012. These are accompanied by reasons why this or that quarter may be special so changes may be off. To be...

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