1223 search results for "MAPS"

Mapping IPv4 Address (with Hilbert curves) in R

January 2, 2015
By
Mapping IPv4 Address (with Hilbert curves) in R

While there’s an unholy affinity in the infosec commuinty with slapping IPv4 addresses onto a world map, that isn’t the only way to spatially visualize IP addresses. A better approach (when tabluation with bar charts, tables or other standard visualization techniques won’t do) is to map IPv4 addresses into Hilbert space-filling curve. You can get a good feel...

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Happy New Year! A look at the top posts from 2014.

January 1, 2015
By

Happy New Year everyone! Another year has come and gone, and this blog has just entered its seventh year of publication. (Once again, I missed the anniversary back on December 9.) Thanks to everyone who has supported this blog over the past 6 years by reading, sharing and commenting on our posts. And an extra- special thanks to all...

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Mapping San Francisco crime

December 30, 2014
By
Mapping San Francisco crime

When I was working as a data scientist at Apple in Silicon Valley, I’d drive up to San Francisco on nights and weekends to meet a girl for dinner or go to a meetup. I sort of fell in love with the city, and ... The post Mapping San Francisco crime appeared first on SHARP SIGHT LABS.

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Create an R-tree data structure using Rcpp and Boost::Geometry

December 26, 2014
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Create an R-tree data structure using Rcpp and Boost::Geometry

Introduction The purpose of this post is to show how to use Boost::Geometry library which was introduced recently in Rcpp. Especially, we focus on R-tree data structure for searching objects in space because only one spatial index is implemented - R-tree Currently in this library. Boost.Geometry which is part of the Boost C++ Libraries gives us algorithms for solving geometry problems. In this library, the...

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Create an R-tree data structure using Rcpp and Boost::Geometry

December 26, 2014
By
Create an R-tree data structure using Rcpp and Boost::Geometry

Introduction The purpose of this post is to show how to use Boost::Geometry library which was introduced recently in Rcpp. Especially, we focus on R-tree data structure for searching objects in space because only one spatial index is implemented - R-tree Currently in this library. Boost.Geometry which is part of the Boost C++ Libraries gives us algorithms for solving geometry problems. In this library, the...

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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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