Publications by mikeksmith's posterous
LondonR tomorrow night
LondonR Date: Tuesday 3rd November Time: 6pm – 9.30pm Venue: Shooting Star Public house, 129 City Rd London, EC1, United Kingdom +44 20 7929 6818 Introduction: Richard Pugh – mangosolutions 6.15pm: Richard Saldanha – R in the City 6.50pm: Luca Sbardella – A use of R from within python for quantitative finance applications 7.2...
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Is this good or bad programming?
If I come across this kind of code when I’m checking (QCing) code it makes me want to punch the programmer’s face. I find that it’s impossible to step through and check each dataset with the previous incarnation. Which is how I check what has happened in between lines. (In this case the changes are trivial, but the principle applies). Howev...
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Working with multiple graphs in R
I’m trying out screencasting to help illustrate some tips and tricks with the statistics software package R, but also to hone my skills in this area.I’m including the code for this example as an attachment to this post.I’m in the process of preparing the next one, which will look at using the basic graphics function plot(…) but with the ...
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type=”n” graphs in R
type n graph.R Download this file One of the most useful graphs you can produce in R using the plot(…) function is one with nothing in it. Using the type=”n” option, you get a blank canvas to which you can add points, lines, text, shaded regions and build up something that’s really very useful. Other packages such as lattice and ggplot2 ...
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Statistics without Maths
I got an interesting message from Chris Atherton the other day who has offered to do a workshop at the Technical Communications UK conference on statistics and data visualisation. The problem is that for some tech writers, their understanding of statistics is limited and she wanted to do a primer that wouldn’t be too scary for them while still ...
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A primer on R2OpenBUGS using the simple linear regression example.
I make using OpenBUGS fun (and easier)! I’ve been a BUGS, WinBUGS and OpenBUGS user for some time now (20 years and counting!). The combination of R and OpenBUGS using the R2OpenBUGS package allows the user to bring together data preparation, model specification, diagnostics and visualisation all in one script. It’s good stuff. The example sc...
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