# 1165 search results for "maps"

## A Look at the World Values Survey

November 4, 2014
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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...

## Shapefiles from Isodensity Curves

November 3, 2014
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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, +...

## Leveraging R for Job Openings for Economists

November 1, 2014
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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

## Exploration of Letter Make Up of English Words

October 31, 2014
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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 →

## Wrangling F1 Data With R – F1DataJunkie Book

October 30, 2014
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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

## My Commonly Done ggplot2 graphs

October 30, 2014
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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

## R Class for Wildfire Scientists

October 29, 2014
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This entry is part 14 of 14 in the series Using RMazama Science has just finished creating class materials on using R for the AirFire team at the USFS Pacific Wildland Fire Sciences Lab in Seattle, Washington. This team of …   read more ...

## Visualizing the History of Epidemics

October 27, 2014
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I really like National Geographic. Their magazine is great, their television documentaries are done well and they helped give me a lifelong love of maps. They generate very good information and help shed light on the world we all share. So why is this graphic so awful? Let's have a look: We'll start off by

## Call for participation: AusDM 2014, Brisbane, 27-28 November

October 25, 2014
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********************************************************* 12th Australasian Data Mining Conference (AusDM 2014) Brisbane, Australia 27-28 November 2014 http://ausdm14.ausdm.org/ ********************************************************* The Australasian Data Mining Conference has established itself as the premier Australasian meeting for both practitioners and researchers in data mining. Since AusDM’02 the conference … Continue reading →

## Using WrightMap with the TAM package

October 24, 2014
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WrightMap features close integration with Conquest, allowing you to easily read from its output files. However, this is just a nice convenience for Conquest users, as WrightMap was designed to create beautiful item-person plots simply reading standard R matrices; all you need is a matrix of item parameters and a matrix of person estimates and you can start creating...

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