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...

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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...

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RQuantLib 0.3.0 released

September 5, 2009
By

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 series, ...

Read more »

RQuantLib 0.3.0 released

September 5, 2009
By

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...

Read more »

Polynomial regression techniques

September 5, 2009
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Polynomial regression techniques

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...

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Polynomial regression techniques

September 5, 2009
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Polynomial regression techniques

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...

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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: The R Flashmob Project Subject: R Flashmob #2 You are invited to take part in R Flashmob, the

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R Flashmob

September 4, 2009
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R Flashmob

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: ...

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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...

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R Flashmob #2

September 4, 2009
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R Flashmob #2

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...

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