1147 search results for "Maps"

solar navigation

November 9, 2014
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solar navigation

Introduction Solar altitude is a function of time, longitude and latitude, and so it can be possible to infer location based on measuring altitude as a function of time. This form of solar navigation can be based on sunrise and sunset times, at least on non-equinox days. I have explored this for a school-based project I call “SkyView” involving light sensors and Arduino microcontrollers,...

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Improving R Data Visualisations Through Design

November 6, 2014
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Improving R Data Visualisations Through Design

When I start an R class, one of my opening lines is nea

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The reddit Front Page is Not a Meritocracy

November 6, 2014
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The reddit Front Page is Not a Meritocracy

I was pleasantly surprised when somebody shared my traveling salesman animation to reddit and the post made it all the way to reddit's default front page (i.e. the top 25). The gif racked up over 1.3 million pageviews on Imgur, a testament to reddit's traffic-generating prowess. Before the post made it to the front page, though, it was...

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How to extract Google Analytics data in R using RGoogleAnalytics

November 5, 2014
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How to extract Google Analytics data in R using RGoogleAnalytics

I am extremely thrilled to announce that RGoogleAnalytics was released recently by CRAN. R is already a swiss army knife for data analysis largely due its 6000 libraries. What this means is that digital analysts can now fully use the analytical capabilities of R to fully explore their Google Analytics Data. In this post, we will... Read More The post...

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A Look at the World Values Survey

November 4, 2014
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A Look at the World Values Survey

by Peggy Fan Ph.D. Candidate at Stanford's Graduate School of Education Part of my dissertation at Stanford Graduate School of Education, International Comparative Education program, is looking at the World Values Survey (WVS), a cross-national social survey that started in 1981. Since then there has been 6 waves, and the surveys include questions that capture the demographic, behaviors, personal...

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Shapefiles from Isodensity Curves

November 3, 2014
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Shapefiles from Isodensity Curves

Recently, with @3wen, we wanted to play with isodensity curves. The problem is that it is difficult to get – numerically – the equation of the contour (even if we can easily plot it). Consider the following surface (just for fun, in order to illustrate the idea) > f=function(x,y) x*y+(1-x)*(1-y) > u=v=seq(0,1,length=21) > v=seq(0,1,length=11) > f=outer(u,v,f) > persp(u,v,f,theta=angle,phi=10,box=TRUE, +...

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Leveraging R for Job Openings for Economists

November 1, 2014
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Leveraging R for Job Openings for Economists

Quite a few people emailed me regarding my post on Econ Job Market. This post is about how you can use very basic and simple R tools to help you in sorting through the Job Openings for Economists list from the American Economic Association.This definitely helped me in developing my spreadsheet of places to apply

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Exploration of Letter Make Up of English Words

October 31, 2014
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Exploration of Letter Make Up of English Words

This blog post will do a quick exploration of the grapheme make up of words in the English. Specifically we will use R and the qdap package to answer 3 questions: What is the distribution of word lengths (number of … Continue reading →

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Wrangling F1 Data With R – F1DataJunkie Book

October 30, 2014
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Wrangling F1 Data With R – F1DataJunkie Book

Earlier this year I started trying to pull together some of my #f1datajunkie R-related ramblings together in a book form. The project stalled, but to try to reboot it I’ve started publishing it as a living book over on Leanpub. Several of the chapters are incomplete – with TO DO items sketched in, others are

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My Commonly Done ggplot2 graphs

October 30, 2014
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My Commonly Done ggplot2 graphs

In my last post, I discussed how ggplot2 is not always the answer to the question “How should I plot this” and that base graphics were still very useful. Why Do I use ggplot2 then? The overall question still remains: why (do I) use ggplot2? ggplot2 vs lattice For one, ggplot2 replaced the lattice package

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