# 1211 search results for "latex"

## Monotonic deshrinking in weighted averaging models

January 5, 2013
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$Monotonic deshrinking in weighted averaging models$

Weighted averaging regression and calibration is the most widely used method for developing a palaeolimnological transfer function. Such models are used to reconstruct properties of the past lake environment such as pH, total phosphorus, and water temperature with, it has … Continue reading →

## 100 most read R posts in 2012 (stats from R-bloggers) – big data, visualization, data manipulation, and other languages

January 2, 2013
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R-bloggers.com is now three years young. The site is an (unofficial) online journal of the R statistical programming environment, written by bloggers who agreed to contribute their R articles to the site. Last year, I posted on the top 24...

## R Markdown to other document formats

December 26, 2012
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Perhaps you have a file written in Markdown with embedded R of the kind that RStudio makes so nice and easy but you’d like a range of output formats to keep your collaborators happy.  Say latex, pdf, html and MS Word.  Here’s what you might do I shall imagine your file is called doc.Rmd Install pandoc

## Generating a non-homogeneous Poisson process

December 21, 2012
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$(N_t)_{t\geq 0}$

Consider a Poisson process , with non-homogeneous intensity . Here, we consider a deterministic function, not a stochastic intensity. Define the cumulated intensity in the sense that the number of events that occurred between time  and  is a random variable that is Poisson distributed with parameter  . For example, consider here a cyclical Poisson process, with intensity lambda=function(x) 100*(sin(x*pi)+1) To compute...

## Y2K38: Our Own Mayan Calendar…Again

December 21, 2012
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$Y2K38: Our Own Mayan Calendar…Again$

It’s not quite the end of the world as we know it.  We made it through December 21, 2012 unscathed. It’s not going to be the last time we will make it through such a pseudo-calamity.  After all we have built our own end of the world before (e.g. Y2K). Next up January 19, 2038.

## Stealing from the internet: Part 1

December 20, 2012
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Well, not stealing but rather some handy tools for data mining… About a year ago I came across the package XML as I was struggling to get some data from various web pages. The purpose of this blog is to describe how this package can be used to quickly gather data from the internet. I’ll

## Generation of E-Learning Exams in R for Moodle, OLAT, etc.

December 20, 2012
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(Guest post by Achim Zeileis) Development of the R package exams for automatic generation of (statistical) exams in R started in 2006 and version 1 was published in JSS by Gr?n and Zeileis (2009). It was based on standalone Sweave exercises, that can be combined …Read more »

## RStudio and TeXworks working great together

December 18, 2012
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Just now writing a reproducible report in R using RStudio on Ubuntu. So the source is a .Rnw file and I am compiling it with knitr. For the narrative part of the report it is a shame that RStudio doesn’t have autocomplete for latex styles, headings etc. But I just realised that it is possible

## From d3 to pdf (hopefully knitr) with R Shiny

December 17, 2012
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Although I think I like the d3, R, and Shiny team the best, I could definitely envision a big need for multi-page pdf reports created with R, knitr, and latex delivered to the browser with Shiny.  Shiny helpfully provides pre-built functionality t...

## Linear Models with Multiple Fixed Effects

December 11, 2012
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$Linear Models with Multiple Fixed Effects$

Estimating a least squares linear regression model with fixed effects is a common task in applied econometrics, especially with panel data. For example, one might have a panel of countries and want to control for fixed country factors. In this case the researcher will effectively include this fixed identifier as a factor variable, and then proceed to