1318 search results for "how to import image file to r"

The luckiest team in the NBA

June 8, 2014
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The luckiest team in the NBA

While the NBA finals are in full swing and the two best teams are battling it out for the ultimate prize, another 28 are now in summer vacation. In order to achieve their goal of still playing this time next year, teams often look to improve their roster through trades, player development, and most importantly, the

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Tolerance and numerical analysis

June 5, 2014
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Tolerance and numerical analysis

This is a companion post to the article What’s the ROI of your loan? It depends…, which discusses approaches for …Continue reading →

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Using Repeated Measures to Remove Artifacts from Longitudinal Data

June 4, 2014
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Using Repeated Measures to Remove Artifacts from Longitudinal Data

Recently I was tasked with evaluating and most importantly removing analytical variance form a longitudinal metabolomic analysis carried out over a few years and including >2,5000 measurements for >5,000 patients. Even using state-of-the-art analytical instruments and techniques long term biological studies are plagued with unwanted trends which are unrelated to the original experimental design and stem from analytical

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Introducing R for Big Data with PivotalR

June 4, 2014
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Introducing R for Big Data with PivotalR

Wouldn't it be great if there was a way to harness the familiarity and usability of a tool like R, and at the same time take advantage of the performance and scalability benefits of in-database/in-Hadoop computation? We're happy to announce PivotalR, a package that translates R code into SQL for processing, is available to download from GitHub today.

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Explaining the ABC-Rejection Algorithm in R

June 2, 2014
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Explaining the ABC-Rejection Algorithm in R

Approximate Bayesian Computation (ABC) is an umbrella term for a class of algorithms and ideas that allow performing an approximate estimation of the likelihood / posterior for stochastic simulation models when the likelihood cannot be explicitly calculated (intractable likelihood). To give you the idea in a nutshell: to approximate the likelihood, consider that for a…

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Phylogenies in R and Python

June 2, 2014
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Phylogenies in R and Python

One of the reasons I switched to Python from R is because Python’s phylogenetic capabilities are very well developed, but R is catching up. I’m moving into phylogenetic community ecology, which requires a lot of tree manipulation and calculation of … Continue reading →

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floweR

June 2, 2014
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floweR

It is the time you have wasted for your rose that makes your rose so important (Antoine de Saint-Exupéry, The Little Prince) Yesterday I found a package called circular and I could not suppress to do this: Make your own floweRs:

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Analyzing the 2011-2012 California Health Inteview Survey with R

June 1, 2014
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Analyzing the 2011-2012 California Health Inteview Survey with R

The California Health Interview Survey (CHIS) is a remarkable biannual survey of health status, care access, and demographics for California residents. The 2011-2012 public use survey data has recently been released and is freely available after registering at the CHIS site. CHIS currently offers data in SAS, Stata, and SPSS formats. However, thanks to a...

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Retrospective: Writing an O’Reilly Book

May 31, 2014
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Retrospective: Writing an O’Reilly Book

A number of people have asked me about the amount of time and effort involved in writing a book as I just completed one for O'Reilly (published in April and is available on Amazon).   The process at O'Reilly is unique in that a book is written and initially formatted on an application called...

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Visualizing asylum statistics

May 30, 2014
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Visualizing asylum statistics

Note: of potential interest to R users for the dynamic Google chart generated via googleVis in R and discussed towards the end of the post. Here you can go directly to the graph. An emergency refugee center, opened in September … Continue reading →

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