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Simple ROC plots with ggplot2 – Part 2

March 21, 2012
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Simple ROC plots with ggplot2 – Part 2

In the first part of this article we built a function (rocdata) to calculate the co-ordinates for the ROC plot and its summary statistics. Now we need to actually produce the plot. I make most of my plots in ggplot2 because of it’s versatility. However there’s no reason why these plots couldn’t be produced

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Simple ROC plots with ggplot2 – Part 1

March 21, 2012
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Simple ROC plots with ggplot2 – Part 1

I was recently asked to summarise an analysis using a ROC (Receiver-operator characteristics) plot. R has a number of particularly good tools to produce ROC plots – ROCR, pROC and the Bioconductor package ROC to name a few. However I thought it would be a useful exercise

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Collaborative R coding using Dropbox

May 27, 2011
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Collaborative R coding using Dropbox

I do like Dropbox. I’m a big fan of easy to use solutions to common problems. For me I work at two different sites and I do a significant amount of work at my desktop machine at home as well as on my laptop. Dropbox solved the problem of synchronising files between

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