1198 search results for "maps"

Calibrated Hull and White short-rates with RQuantLib and ESGtoolkit

December 24, 2014
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Calibrated Hull and White short-rates with RQuantLib and ESGtoolkit

In this post, I use R packages RQuantLib and ESGtoolkit for the calibration and simulation of the famous Hull and White short-rate model. QuantLib is an open source C++ library for quantitative analysis, modeling, trading, and risk management of financial … Continue reading →

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Can R and ggvis help solve Serial’s murder?

December 22, 2014
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Can R and ggvis help solve Serial’s murder?

Like much of America, I followed season one of Sarah Koenig’s true-crime podcast Serial with an interest that bordered on obsession. Serial tells the story of the Baltimore 1999 murder of high-schooler Hae Min Lee, and of state prisoner Adnan Syed, who was convicted of the crime but to this day maintains his innocence. One especially gripping episode...

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Contextual Measurement Is a Game Changer

December 22, 2014
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Contextual Measurement Is a Game Changer

Adding a context can change one's frame of reference:Are you courteous? Are you courteous at work? Decontextualized questions tend to activate a self-presentation strategy and retrieve memories of past positioning of oneself (impression manag...

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htmlwidgets: JavaScript data visualization for R

December 18, 2014
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htmlwidgets: JavaScript data visualization for R

Today we’re excited to announce htmlwidgets, a new framework that brings the best of JavaScript data visualization libraries to R. There are already several packages that take advantage of the framework (leaflet, dygraphs, networkD3, DataTables, and rthreejs) with hopefully many more to come. An htmlwidget works just like an R plot except it produces an interactive web

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Interactive 2D & 3D Plots with Plotly and ggplot2

December 16, 2014
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Interactive 2D & 3D Plots with Plotly and ggplot2

by Matt Sundquist co-founder of Plotly R, Plotly, and ggplot2 let you make, share, and collaborate on beautiful, interactive plots online. Let's see what we can do with the topographic data from Auckland's Maunga Whau Volcano that comes with R. Copy and paste this R code to make your first plot. The basic idea is: use ggplot2 code, add...

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Cartography with complex survey data

December 15, 2014
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Cartography with complex survey data

Visualizing complex survey data is something of an art. If the data has been collected and aggregated to geographic units (say, counties or states), a choropleth is one option. But if the data aren't so neatly arranged, making visual sense often requires some form of smoothing to represent it on a map. R, of course, has a number of...

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Spatial visualization with R – Tutorial

December 10, 2014
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Spatial visualization with R – Tutorial

The visualization of spatial data is one of the most popular applications when using R. This tutorial is an introduction to the visualization of spatial data and map making in R. The following issues will be addressed: Import anduse of shapefiles in R (shapefile is a file format designed for spatial data). Data management and

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Next Kölner R User Meeting: Friday, 12 December 2014

December 9, 2014
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Next Kölner R User Meeting: Friday, 12 December 2014

The next Cologne R user group meeting is scheduled for this Friday, 12 December 2014.We have an exciting agenda with two talks on Julia and Dynamic Linear Models:Introduction to Julia for R Users Hans Werner BorchersJulia is a high-performance dynamic programming language for scientific computing, with a syntax that is familiar to users of other technical...

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Going Bananas #1: Superman Was Born In Kentucky!

December 8, 2014
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Going Bananas #1: Superman Was Born In Kentucky!

Who knows? Could be the tropic heat or something that I eat, that makes me gonzo (I’m Going Bananas, Madonna) This is the first post of a new category called “Going Bananas” in which I will post totally crazy experiments. My aim is to try some techniques without taking care of making serious things. These are … Continue reading...

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A New Volatility Strategy, And A Heuristic For Analyzing Robustness

December 4, 2014
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A New Volatility Strategy, And A Heuristic For Analyzing Robustness

This post is motivated by a discussion that arose when I tested a strategy by Frank of Trading The Odds … Continue reading →

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