3618 search results for "gis"

Some R Resources for GLMs

April 3, 2014
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Some R Resources for GLMs

by Joseph Rickert Generalized Linear Models have become part of the fabric of modern statistics, and logistic regression, at least, is a “go to” tool for data scientists building classification applications. The ready availability of good GLM software and the interpretability of the results logistic regression makes it a good baseline classifier. Moreover, Paul Komarek argues that, with a...

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Social Science Goes R: Weighted Survey Data

April 2, 2014
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Social Science Goes R: Weighted Survey Data Social Science Goes R: Weighted Survey Data To get this blog started, I'll be rolling out a series of posts relating to the use of survey data in R. Most content comes from the ECPR...

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Announcing The Pooled Resources Open Access ALS Clinical Trial (PRO-ACT) database

April 2, 2014
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Announcing The Pooled Resources Open Access ALS Clinical Trial (PRO-ACT) database

Prize4Life, and NEALS are proud to announce the launch of the Pooled Resources Open Access ALS Clinical Trial (PRO-ACT) database. It is a database of ALS clinical trials and contains 8500+ patients records, and over 8 million data points, making is not only the biggest AS clinical trial database currently available, but one of the largest clinical trial databases...

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Merge .ASC grids with R

April 2, 2014
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Merge .ASC grids with R

A couple of years ago I found online a script to merge several .asc grids into a single file in R.I do not remember where I found it but if you have the same problem, the script is the following: setwd("c:/temp") library(rgdal) library(raster) # ...

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Deploying Desktop Apps with R

April 2, 2014
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(Update) Despite the original publish date (Apr 1), this post was not and April Fools joke. I’ve also shortened the title a bit. As part of my job, I develop utility applications that automate workflows that apply more involved analysis algorithms. When feasible, I deploy web applications as it lowers installation requirements to simply a modern (standards...

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Kaplan-Meier plots using ggplots2 (updated)

April 1, 2014
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Kaplan-Meier plots using ggplots2 (updated)

About 3 years ago I published some code on this blog to draw a Kaplan-Meier plot using ggplot2. Since then, ggplot2 has been updated (from 0.8.9 to 0.9.3.1) and has changed syntactically. Since that post, I have also become comfortable with Git and Github. I have updated the code, edited it for a small error,

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Mapping the March 2014 California Earthquake with ggmap

April 1, 2014
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Mapping the March 2014 California Earthquake with ggmap

I had no intention to blog this, but @jayjacobs convinced me otherwise. I was curious about the recent (end of March, 2014) California earthquake “storm” and did a quick plot for “fun” and personal use using ggmap/ggplot. I used data from the Southern California Earthquake Center (that I cleaned up a bit and that you

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Include uncertainty in a financial model

April 1, 2014
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Include uncertainty in a financial model

Here’s a post that appears on my new website, ragscripts.com. On-line resources for analysts are often either too general to be of practical use or too specialised to be accessible. The aim of ragscripts.com is to remedy this by providing start to finish directions for complex analytical tasks. The site is under construction at the … Continue reading...

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Calendar charts with googleVis

April 1, 2014
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Calendar charts with googleVis

My little series of posts about the new googleVis charts continues with calendar charts. Google's calendar charts are still in beta, but they provide already a nice heat map visualisation of calendar year data. The current development version of google...

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analyze the european social survey (ess) with r

March 31, 2014
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with more than a decade of microdata aimed at gauging the political mood across european nations, the european social survey (ess) allows scientists like you to examine socio-demographic shifts among broad groups all the way down to pirate party (pirat...

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