1291 search results for "how to import image file to R"

Election analysis contest entry part 4 – drivers of preference for Green over Labour party

April 15, 2016
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Election analysis contest entry part 4 – drivers of preference for Green over Labour party

Motivation This post is the fourth in a series that make up my entry in Ari Lamstein’s R Election Analysis Contest. Earlier posts introduced the nzelect R package, basic usage, how it was built, and an exploratory Shiny web application. Today I follow up on discussion in the StatsChat blog. A post there showed a screen...

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RcppNumerical: Numerical integration and optimization with Rcpp

April 8, 2016
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RcppNumerical: Numerical integration and optimization with Rcpp

Introduction I have seen several conversations in Rcpp-devel mailing list asking how to compute numerical integration or optimization in Rcpp. While R in fact has the functions Rdqags, Rdqagi, nmmin, vmmin etc. in its API to accomplish such tasks, it is not so straightforward to use them with Rcpp. For my own research projects I need to do a lot of numerical integration, root finding...

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52Vis Week 2 (2016 Week #14) – Honing in on the Homeless

April 6, 2016
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52Vis Week 2 (2016 Week #14) – Honing in on the Homeless

Why 52Vis? In case folks are wondering why I’m doing this, it’s pretty simple. We need a society that has high data literacy and we need folks who are capable of making awesome, truthful data visualizations. The only way to do that is by working with data over, and over, and over, and over again.

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An Analysis of Traffic Violation Data with SQL Server and R

April 6, 2016
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An Analysis of Traffic Violation Data with SQL Server and R

By Srini Kumar, Director of Data Science at Microsoft Who does not hate being stopped and given a traffic ticket? Invariably, we think that something is not fair that we got it and everyone else did not. I am no different, and living in the SF Bay Area, I have often wondered if I could get the data about...

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Real-time model scoring for streaming data – a prototype based on Oracle Stream Explorer and Oracle R Enterprise

March 30, 2016
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Real-time model scoring for streaming data – a prototype based on Oracle Stream Explorer and Oracle R Enterprise

Whether applied to manufacturing, financial services, energy, transportation, retail, government, security or other domains, real-time analytics is an umbrella term which covers a broad spectrum of capabilities (data integration, analytics, business intelligence) built on streaming input from multiple channels. Examples of such channels are: sensor data, log data, market data, click streams, social media and monitoring imagery. Key metrics...

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Seasonal decomposition in the ggplot2 universe with ggseas

March 27, 2016
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Seasonal decomposition in the ggplot2 universe with ggseas

The ggseas package for R, which provides convenient treatment of seasonal time series in the ggplot2 universe, was first released by me in February 2016 and since then has been enhanced several ways. The latest version, 0.4.0, is now on CRAN. The improvements since I last blogged about ggseas include: added the convenience function tsdf() to convert a...

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Choice Modeling with Features Defined by Consumers and Not Researchers

March 25, 2016
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Choice Modeling with Features Defined by Consumers and Not Researchers

Choice modeling begins with a researcher "deciding on what attributes or levels fully describe the good or service." This is consistent with the early neural networks in which features were precoded outside of the learning model. That is, choice modeli...

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Understanding Statistical Models Through the Datasets They Seek to Explain: Choice Modeling vs. Neural Networks

March 21, 2016
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Understanding Statistical Models Through the Datasets They Seek to Explain: Choice Modeling vs. Neural Networks

R may be the lingua franca, yet many of the packages within the R library seem to be written in different languages. We can follow the R code because we know how to program but still feel that we have missed something in the translation.R provides an o...

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Skill v luck in determining backgammon winners

March 18, 2016
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Skill v luck in determining backgammon winners

Getting backgammon data out of XG-Gammon Backgammon is a game that combines chance and skill, and everyone who comes across it asks “how much is luck, and how much skill?”. The answer of course is “it depends”. Consider that for two exactly equally skilled players, the result appears to be 100% luck and the best forecast for a...

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RWebData V. 0.1 on Bitbucket: A High-Level Interface to the Programmable Web

March 14, 2016
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RWebData V. 0.1 on Bitbucket: A High-Level Interface to the Programmable Web

I am happy to announce the first release of the R-package RWebData  on Bitbucket. The main aim of the package is to provide high-level functions that facilitate the access and systematic collection of data from REST APIs for the purpose of statis...

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