2046 search results for "Twitter"

Creating GUIs in R with gWidgets

October 6, 2010
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Creating GUIs in R with gWidgets

The gWidgets framework is a way of creating graphical user interfaces in a toolkit independent way. That means that you can choose between tcl/tk, Gtk, Java or Qt underneath the bonnet. There's also a web-version based upon RApache and ExtJS. Since the code is the same in each case, you can change your mind and swap toolkits...

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Typos…

October 5, 2010
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Typos…

Edward Kao just sent another typo found both in  Monte Carlo Statistical Methods (Problem 3.21) and in Introducing Monte Carlo Methods with R (Exercise 3.17), namely that should be I also got another email from Jerry Sin mentioning that matrix summation in the matrix commands of Figure 1.2 of Introducing Monte Carlo Methods with R

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Use R to Analyze Players for your Fantasy Hockey League

October 4, 2010
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Use R to Analyze Players for your Fantasy Hockey League

I am in a fantasy hockey league for the first time this seasons and I wanted to use R to analyze players.  Since I am relatively new to R, I am quite certain this code could be improved.  The code below is functional, however, and while this isn’t my complete analysis, I think it outlines

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V3 Station mash up

October 3, 2010
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V3 Station mash up

Hmm, lets see how a fusion table works with map maker. The process works like this. We read in the GHCN inventory file into R. ( see code below ) We then clean it up ( the names fields and missing values) and we output it to a  *csv  file. Then open the csv in

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Le Monde puzzle [34]

October 3, 2010
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Le Monde puzzle [34]

Since the puzzle in this week (-end) edition of Le Monde is not (easily) solvable via an R program, I chose to go back to an older puzzle that my students can solve. Eleven token are distributed around a 200 meter perimeter-long ring. They all start moving at the same speed, 18km/h, in

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ICOADS

October 3, 2010
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ICOADS

Just a short update on ICOADS. I started out an ICOADS project with grand plan to reprocess the observation files into a “raster” format. That ends up being a really big job. Along the way I had to learn a new package Rcurl and relearn some old Unix skills for compiling RCurl. Along the way

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ProjectTemplate Version 0.1-3 Released

October 2, 2010
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I’ve just released the newest version of ProjectTemplate. The primary change is a completely redesigned mechanism for automatically loading data. ProjectTemplate can now read compressed CSV files, access CSV data files over HTTP, read Stata, SPSS and RData binary files and even load MySQL database tables automatically. For my own projects, this is a big

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Typo in Example 5.18

October 2, 2010
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Typo in Example 5.18

Edward Kao pointed out several typos in Example 5.18 of Monte Carlo Statistical Methods. First, the customers in area i should be double-indexed, i.e. which implies in turn that . Then the summary T should be defined as and as given that the first m customers have the fifth plan missing. Filed under: Books, R,

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Fibonacci 1-liners

October 1, 2010
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The other day, as an excuse to play around with custom iterators, I created some completely over-engineered code to calculate the Fibonacci sequences. But surely such a simple function can be implemented in fewer than my 15 lines? (Rick Wicklin, who writes the SAS blog The Do Loop, thinks so too.) We could use such a function to more...

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New version of solaR

September 30, 2010
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New version of solaR

The version 0.2 of the solaR package is now available at CRAN. This package provides a set of calculation methods of solar radiation and performance of photovoltaic systems. The package has been uploaded to CRAN under the GPL-3 license. The most important changes included in this version are: The package is now almost entirely designed

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