793 search results for "MAPS"

Phase space plot of the kicked rotor

April 21, 2012
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Phase space plot of the kicked rotor

In the idealized physical world, a rotor is simply a mass attached to an axis of length , free to move in the plane. Gravity and friction are absent. Such a rotor becomes a kicked rotor if it is periodically hit with a hammer. Every kick transfers momentum to the rotor and the time between

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How NOAA uses R to forecast river flooding

April 16, 2012
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How NOAA uses R to forecast river flooding

Thanks to the lower-than-usual snowfall over most of the US this past winter, there's low risk of major flooding as the snow melts this Spring (for the first time in four years!). Nonetheless, being able to forecast river flood events is of critical importance to local emergency managers, water & electric utilities, river navigation companies, and the US Army...

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Piggybacking and Hopefully Publicizing R Experts

April 9, 2012
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Piggybacking and Hopefully Publicizing R Experts

I was inspired by the Revolution Analytics blog post http://blog.revolutionanalytics.com/2009/11/charting-time-series-as-calendar-heat-maps-in-r.html on the d3.js style calendar heat map that Paul Bleicher from Humedica developed in R.  In an effo...

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Course: Analysing Palaeolimnological Data with R

April 8, 2012
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Course: Analysing Palaeolimnological Data with R

Update: As of 18 April 2012 the course is now fully subscribed. Should you wish to be placed on a waiting list please contact Steve Juggins. Analysing Palaeolimnological Data with R 16th — 20th August 2012, University Marine Biological Station … Continue reading →

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Course: Analysing Palaeolimnological Data with R

April 8, 2012
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16th — 20th August 2012, University Marine Biological Station Millport, Isle of Cumbrae, Scotland. Steve Juggins and I will be running a 4-day residential R course to coincide with the International Paleolimnology Symposium 2012 this August. The course will be held at the University Marine Biological Station Millport on the Isle of Cumbrae, within easy...

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Rudd, the last one standing?: Federal implications of QLD state election results

April 4, 2012
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Rudd, the last one standing?: Federal implications of QLD state election results

Labor won 15 of Queensland’s 29 House of Reps seats in the 2007 Federal election (AEC details here). Yet just three years later, in the 2010 Federal election, Labor won only 8 of 30 Queensland Reps seats, with 33.6% of 1st preferences (a swing of -9.3 percentage points). Labor’s best performance on 1st preferences in

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Exploring Pollen Data

April 2, 2012
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Exploring Pollen Data

I wrote a few functions to grab data and from the Global Pollen Database: source("~/code/_Pollen/pollendatafuntions.R") ## Loading required package: stratigraph ## Loading required package: grid ## Loading required package: graphics ## Loading required package: stats billys <- getpctAP("billys", plot = TRUE) ## Number of taxa: 105 ## Number of levels: 77 Arboreal Pollen over time at Billy’s...</p><p><a href=Read more »

Example 9.25: It’s been a mighty warm winter? (Plot on a circular axis)

April 2, 2012
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Example 9.25: It’s been a mighty warm winter? (Plot on a circular axis)

Updated (see below)People here in the northeast US consider this to have been an unusually warm winter. Was it?The University of Dayton and the US Environmental Protection Agency maintain an archive of daily average temperatures that's reasonably current. In the case of Albany, NY (the most similar of their records to our...

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Simple data mining and plotting data on a map with ggplot2

April 2, 2012
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Simple data mining and plotting data on a map with ggplot2

In this post I use OpenStreetsMaps and ggplot2 to plot geographically were psychologists live, using data from a facebook document.

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See the wind

March 30, 2012
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See the wind

The image below isn't a bearskin rug in the shape of the USA. It's fact, it's a visualization of the wind flowing over the United States, as of 4PM EDT today, March 30. You can click through to see the current wind conditions, based on latest data from the National Digital Forecast Database. But more importantly, as long as...

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