3276 search results for "map"

Speed Cameras: Revenue or Public Safety? We’ll get you up to speed in a Flash!

January 14, 2015
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Speed Cameras: Revenue or Public Safety? We’ll get you up to speed in a Flash!

Goals and Introduction Are speed cameras a tool increase safety? Or a revenue grab by local governments plugging budget deficits? With the implementation of a speed

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Secure your Shiny apps (against SQL injection)

January 12, 2015
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Shiny takes inputs from UI elements and sends them to the server, where the application...

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Some Applications of Item Response Theory in R

January 11, 2015
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Some Applications of Item Response Theory in R

The typical introduction to item response theory (IRT) positions the technique as a form of curve fitting. We believe that a latent continuous variable is responsible for the observed dichotomous or polytomous responses to a set of items (e.g., multipl...

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New R Package: cdcfluview — Retrieve Flu Data from CDC’s FluView Portal

January 10, 2015
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New R Package: cdcfluview — Retrieve Flu Data from CDC’s FluView Portal

Towards the end of 2014 I had been tinkering with flu data from the CDC’s FluView portal since flu reports began to look like this season was going to go the way of 2009. While you can track the flu over at The Washington Post, I like to work with data on my own. However

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Interactive visualizations with R – a minireview

January 9, 2015
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2015-01-10 00_34_37-Clipboard

Interactive visualization allows deeper exploration of data than static plots. Javascript libraries such as d3 have made possible wonderful new ways to show data. Luckily the R community has been active in developing R interfaces to some popular javascript libraries to enable R users to create interactive visualizations without knowing any javascript. In this post I have reviewed...

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In case you missed it: December 2014 roundup

January 9, 2015
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In case you missed them, here are some articles from November of particular interest to R users. R was featured in recent articles in Nature News and Mashable. A recap of the 6th Spanish R Users Conference. R was the recipient of a 2014 "Bossie" award for best open-source big data tools. A fractal Christmas tree created with R....

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Front-end for ggplot2

January 9, 2015
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Front-end for ggplot2

ggplot2 is a very powerful R package for data visualization, but mastering it is like learning another language in addition to R. Wouldn’t it be nice if there’s a simple GUI to ggplot2? That’s one major motivation behind the R package shinyData. Leveraging the power of shiny (which is another R package), majority of the … Continue reading...

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What’s your KatRisk Score?

January 8, 2015
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What’s your KatRisk Score?

by Joseph Rickert KatRisk, a Berkeley based catastrophe modeling company specializing in wind and flood risk, has put three R and Shiny powered interactive demos on their website. Together these provide a nice introduction to the practical aspects of weather based risk modeling and give a good indication of the kinds of data that are important. Two of the...

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Probable Points and Credible Intervals, Part 2: Decision Theory

January 7, 2015
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Probable Points and Credible Intervals, Part 2: Decision Theory

“Behind every great point estimate stands a minimized loss function.” – Me, just now This is a continuation of Probable Points and Credible Intervals, a series of posts on Bayesian point and interval estimates. In Part 1 we looked at these estimates as graphical summaries, useful when it’s difficult to plot the whole posterior in good way....

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Top 77 R posts for 2014 (+R jobs)

January 7, 2015
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Top 77 R posts for 2014 (+R jobs)

R-bloggers.com is 5 years old this month! In celebration, this post share links to the top 77 most read R posts of 2014 (+stats on R-bloggers, + top R jobs for the beginning of 2015)

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