2570 search results for "ggplot2"

UofT R session went well. Thanks RStudio Server!

February 9, 2014
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UofT R session went well.  Thanks RStudio Server!

Apart from going longer than I had anticipated, very little of any significance went wrong during my R session at UofT on friday!  It took a while at the beginning for everyone to get set up.  Everyone was connecting to … Continue reading →

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Bayesian analysis of sensory profiling data, part 2

February 9, 2014
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Bayesian analysis of sensory profiling data, part 2

Last week I made the core of a Bayesian model for sensory profiling data. This week the extras need to be added. That is, there are a bunch of extra interactions and the error is dependent on panelists and descriptors.Note that where last week I pointe...

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R and the Weather

February 6, 2014
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R and the Weather

by Joseph Rickert The weather is on everybody's mind these days: too much ice and snow east of the Rockies and no rain to speak fo in California. Ram Narasimhan has made it a little easier for R users to keep track of what's going on and also get a historical perspective. His new R package weatherData makes it...

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Craig Bellamy – quite dplyr

February 4, 2014
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Craig Bellamy – quite dplyr

This weekend brought a couple of firsts in Cardiff’s winner against Norwich After a wretched time at Manchester United, Wilfried Zaha recorded his first Premiership assist, whilst, more interestingly, Craig Bellamy became the first player in history to score for seven different Premier League clubs To celebrate, I thought it was worth taking a quick

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R is 15th of top programming languages in latest RedMonk ranking

February 3, 2014
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R is 15th of top programming languages in latest RedMonk ranking

Analyst firm RedMonk periodically publishes rankings of the Top 20 programming languages, as measured by activity on StackOverflow and number of repositories on GitHub. In their most recent ranking (January 2014), R is ranked #15 amongst all programming languages. An impressive ranking for a domain-specific language; the top 3 were the general-purpose languages Java, Javascript and PHP. Here's a...

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Meticulously recreating bitmap plots in R

February 3, 2014
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Meticulously recreating bitmap plots in R

There’s a hard-fought drive on Wikimedia commons to convert those images that should be in vector format (i.e. graphs, diagrams) from their current bitmap form. At the time of writing, the relevant category has over 7000 images in the category … Continue reading →

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Data Analysis Steps

February 3, 2014
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Data Analysis Steps

After going through the overview of tools & technologies needed to become a Data scientist in my previous blog post, in this post, we shall understand how to tackle a data analysis problem.Any data analysis project starts with identifying a business problem where historical data exists. A business problem can be anything which can include prediction...

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Picking a gui interface for R

February 3, 2014
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Recently I decided to switch statistical programs used introductory statistics course for masters students that I teach at the University of Arkansas. Historically this course has been taught with SPSS, but I am attempting the switch to R this semeste...

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Teaching a Class of Undergrads, RStudio Server, and My Ubuntu Machine

February 2, 2014
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Teaching a Class of Undergrads, RStudio Server, and My Ubuntu Machine

I was chatting about public speaking with my brother, who is a Lecturer in the Faculty of Pharmacy at UofT, when he offered me the opportunity to come to his class and teach about R.  Always eager to spread the … Continue reading →

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Bayesian analysis of sensory profiling data

February 2, 2014
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Bayesian analysis of sensory profiling data

I looked at Bayesian analysis of sensory profiling data in May and June 2012. I do remember not being totally happy with the result and computations taking a bit more time than I wanted. But now it is 2014, I can use STAN and I have been thinking about...

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