2292 search results for "ggplot"

Showing results from Cox Proportional Hazard Models in R with simPH

September 2, 2013
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Showing results from Cox Proportional Hazard Models in R with simPH

Effectively showing estimates and uncertainty from Cox Proportional Hazard (PH) models, especially for interactive and non-linear effects, can be challenging with currently available software. So, researchers often just simply display a results table. These are pretty useless for Cox PH models. It is difficult to decipher a simple linear variable’s estimated effect and basically impossible to understand time...

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Fair weather fans, redux

September 1, 2013
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Fair weather fans, redux

Fair weather fans, redux Or, A little larger small sample On August 11 the Victoria HarbourCats closed out their 2013 West Coast League season with a 4-3 win over the Bellingham Bells. In an earlier...

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Visualising Shrinkage

August 31, 2013
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Visualising Shrinkage

A useful property of mixed effects and Bayesian hierarchical models is that lower level estimates are shrunk towards the more stable estimates further up the hierarchy. To use a time honoured example you might be modelling the effect of a new teaching method on performance at the classroom level. Classes of 30 or so students … Continue reading...

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Encouraging citation of software – introducing CITATION files

August 30, 2013
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Summary: Put a plaintext file named CITATION in the root directory of your code, and put information in it about how to cite your software. Go on, do it now – it’ll only take two minutes! Software is very important in science – but good software takes time and effort that could be used to do

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Plot Weekly or Monthly Totals in R

August 29, 2013
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Plot Weekly or Monthly Totals in R

When plotting time series data, you might want to bin the values so that each data point corresponds to the sum for a given month or week. This post will show an easy way to use cut and ggplot2's stat_summary to plot month totals in R wi...

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TV Ratings Myths

August 28, 2013
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TV Ratings Myths

TV Show Cancellations: Myths and Models TV shows are amazing ways to waste time and, on occasion, the story is so good that you actually start to care. The problem is that some shows get cancelled before they jump the shark. Classic examples are shows like

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Presenting Conformance Statistics

August 27, 2013
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Presenting Conformance Statistics

A client came to me with some conformance data. She was having a hard time making sense of it in a spreadsheet. I had a look at a couple of ways of presenting it that would bring out the important points. The Data The data came as a spreadsheet with multiple sheets. Each of the

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OpenCPU 1.0 release!

August 27, 2013
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OpenCPU 1.0 release!

After more than 3 years of development, we release the first official version of the OpenCPU system. Based on feedback and experiences from the beta series, OpenCPU version 1.0 has been rewritten entirely from scratch. The result is simple and flexible API that is easier to understand yet more powerful than before. With the new...

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Using R to visualize Karpov-vs-Kasparov Lifetime winner-take-all tally

August 26, 2013
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Using R to visualize Karpov-vs-Kasparov Lifetime winner-take-all tally

The Karpov vs. Kasparov rivalry holds a special place in the chess world.The idea behind this analysis is simple. If we take their lifetime games, plot the wins, what would it look like? We introduce one twist -- we'll be plotting the "winner-take-all"...

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OpenCPU 1.0 release!

August 26, 2013
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After more than 3 years of development, we release the first official version of the OpenCPU system. Based on feedback and experiences from the beta series, OpenCPU version 1.0 has been rewritten entirely from scratch. The result is simple and flexible API that is easier to understand yet more powerful than before. With the new release also comes a new website and...

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