# Monthly Archives: September 2009

## RQuantLib 0.3.0 Windows build snag

September 6, 2009
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Yesterday's upload of RQuantLib 0.3.0 contained one minor oversight: I had failed to update src/Makefile.win to the new and enlarged set of source files. The proper fix (of using wildcards and implicit rules) was simple, and Uwe Ligges kindly rebuilt...

## RQuantLib 0.3.0 released

September 5, 2009
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Earlier this evening, I rolled up a new version of RQuantLib. It has been pushed to CRAN and Debian, and source and binary version should appear on the respective mirror networks in due course. This version, the first in a new '0.3.*' release seri...

## Polynomial regression techniques

September 5, 2009
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Suppose we want to create a polynomial that can approximate better the following dataset on the population of a certain Italian city over 10 years. The table summarizes the data:$$\begin{tabular}{|1|1|}\hline Year & Population\\ \hline 1959&4835\\ 1960&4970\\ 1961&5085\\ 1962&5160\\ 1963&5310\\ 1964&5260\\ 1965&5235\\ 1966&5255\\ 1967&5235\\ 1968&5210\\ 1969&5175\\ \hline \end{tabular}$$First we import the data into R:Year Population Now we create the dataframe...

## R Flashmob

September 4, 2009
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Today I noticed a call for R users to gather around a single campfire for one hour and share their questions and answers. The campfire name is stackoverflow.com, a site dedicated for handling programming questions. The event details are bellow: From: ...

## ClipPath copies filename and path from windows for loading into R

September 4, 2009
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I wish I would have discovered this long ago.  Loading data into R or MySQL requires you to specify the full path to the file.  If you do this on a Windows machine there are two annoyances.  First, if you save something to your desktop the path to your desktop is really long.  Second, windows by default uses backslashes...

## R Flashmob #2

September 4, 2009
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As I said before, I consider the R-Help mailing list an invaluable source of information if you want to get things done in R. Recently the stackoverflow website, a site where programmers can post and answer questions about a wide list of programming la...

## Compiling and Cross-compiling R packages for Windows (win32)

September 3, 2009
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so recently i’m learning how to compile and cross-compile R packages from source for windows machines, which means i have to create windows binaries. the first option is to build on a windows system, and the 2nd is to cross-build on an intel-based linux or mac system. i will outline my experience. Send it off

## Let’s All Go Down to the Barplot!

September 3, 2009
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I’m back for another pean to ANOVA-loving experimental ecology. Barplots (or point-range plots – but which is better is a discussion for a different time) are the thing! And a friend of mine was recently asking me how to do a decent barplot with ggplot2 for data of moderate complexity (e.g., a 2-way ANOVA). So

## Truncated Normal Distribution

September 3, 2009
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Many distributions may be used to describe patterns that are non-negative; however, there are not as many choices when an upper bound is also needed (although the beta distribution is very flexible). For various reasons, truncated distributions are som...

## update on the ant package

September 3, 2009
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I have updated the ant package I described yesterday in this blog to add several things Now the R code related to <r-set> and <r-run> tasks can either be given as the code attribute or as the text inside the task The R code has acces...