1013 search results for "Latex"

Discovering power laws and removing “shit”

May 10, 2012
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Discovering power laws and removing “shit”

Imagine you perform a statistical analysis on a time series of stock market data. After some transformation, averaging, and “renormalization” you find that the resulting quantity, let’s call it , behaves as a function of time like . Since you are a physicist you get excited because you have just discovered a power law. Physicists

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Use R! – Part 2

May 9, 2012
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Use R! – Part 2

Here is a follow-up of my first post about using R. For our yearly KU Leuven Geology PhD Seminar (08-09/05/2012), I quickly pasted this script together from several examples I had run into in the past, as well as some things that I have been doing myse...

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The Epic Search for the Perfect R Text Editor

May 8, 2012
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  I can never seem to get exactly what I want from an R text editor. Let me correct that, I can never seem to get exactly what I want from an R text editor on a MAC. I used to use Tinn-R  which met most  my needs: Free,lightweight with ...

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The Epic Search for the Perfect R Text Editor

May 8, 2012
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  I can never seem to get exactly what I want from an R text editor. Let me correct that, I can never seem to get exactly what I want from an R text editor on a MAC. I used to use Tinn-R  which met most  my needs: Free,lightweight with ...

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what’s wrong with package comment?!

May 3, 2012
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what’s wrong with package comment?!

I spent most of the Sunday afternoon trying to understand why defining did not have the same effect as writing the line until I found there is a clash due to the comment package… The assuredly simple code produces an error message: This is quite an inconvenience as I need to compile my solution manual

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Measuring time series characteristics

May 2, 2012
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Measuring time series characteristics

A few years ago, I was working on a project where we measured various characteristics of a time series and used the information to determine what forecasting method to apply or how to cluster the time series into meaningful groups. The two main papers to come out of that project were: Wang, Smith and Hyndman (2006) Characteristic-​​based clustering for...

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Playing with knitr: Create Report with Dynamic List

May 1, 2012
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Playing with knitr: Create Report with Dynamic List

Here is a little toy example using knitr, LaTeX/MiKTeX and Google Docs.Say you had a list on Google Docs (say a list of attendants) and you want to print a report with it..Then see this example using this Rnw-file and the output...make the tex-file wit...

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How to Make HTML5 Slides with knitr

May 1, 2012
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How to Make HTML5 Slides with knitr

One week ago I made an early announcement about the markdown support in the knitr package and RStudio, and now the version 0.5 of knitr is on CRAN, so I'm back to show you how I made the HTML5 slides. For those who are not familiar with markdown, you m...

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Correlation of temperature proxies with observations

April 28, 2012
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Correlation of temperature proxies with observations

The climate change debate focuses mainly around the assumption that the annual global mean temperatures of the past few decades have been the highest in the past millenium. How do we know what the annual global mean temperature was in the year, say, 1351 AD? The answer is: Through temperature proxies. Such proxies include tree

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R Workshop: Reproducible Research using Sweave for Beginers

April 27, 2012
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R Workshop: Reproducible Research using Sweave for Beginers

Monday, April 30, 2012  14h-16h. Stewart Biology Rm w6/12 (Montreal) guRu: Denis Haine (Université de Montréal) Topics Reproducible research was first coined by Pr. Jon Claerbout, professor of geophysics at Stanford University, to describe that the results from researches can be replicated by other scientists by making available data, procedures, materials and the computational environment

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