Blog Archives

Mixed Effects Tutorial 2: Fun with merMod Objects

May 17, 2014
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(This article was first published on Data, Evidence, and Policy - Jared Knowles, and kindly contributed to R-bloggers) To leave a comment for the author, please follow the link and comment on his blog: Data, Evidence, and Policy - Jared Knowles. R-bloggers.com offers daily e-mail updates about R news and tutorials on topics such as: visualization (ggplot2, Boxplots, maps,...

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eeptools 0.3 Released!

December 9, 2013
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Version 0.3 of my R package of miscellaneous code has been released, this time with substantial contributions from Jason Becker via GitHub. Progress continues toward the ultimate goal for eeptools to "make it easier for administrators at stat...

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My current R projects at the end of 2013

December 4, 2013
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I have been meaning to write a long post explaining each of the major R projects I am currently working on, but I can't seem to find the time to get to them. Instead, I give you a short summary of a few R projects/experiments/ideas I am kicking around....

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Getting Started with Mixed Effect Models in R

November 25, 2013
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Getting Started with Multilevel Modeling in R Getting Started with Multilevel Modeling in R Jared E. Knowles Introduction Analysts dealing with grouped data and complex hierarchical structures in their data ranging from measurements nested within participants, to counties nested within states or students nested within classrooms often find themselves...

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Latent Variable Analysis with R: Getting Setup with lavaan

September 1, 2013
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Latent Variable Analysis with R: Getting Setup with lavaan

Getting Started with Structural Equation Modeling Part 1Getting Started with Structural Equation Modeling: Part 1 Introduction For the analyst familiar with linear regression fitting structural equation models can at first feel strange. In the R environment, fitting structural equation models involves learning new modeling syntax, new plotting...

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Writing a Minimal Working Example (MWE) in R

May 27, 2013
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Writing a Minimal Working Example (MWE) in R

How to Ask for Help using R How to Ask for Help using R The key to getting good help with an R problem is to provide a minimally working reproducible example (MWRE). Making an MWRE is really easy with R, and it will help ensure that...

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Announcing eeptools 0.2

April 4, 2013
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My R package eeptools has reached version 0.2. As with the last release, this is still a preliminary release which means that functionality is not full, function names and code behavior may still change from version to version, and I am still looking f...

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Tips and Tricks for HTML and R

March 3, 2013
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Over the past two months I have tried to convert completely to HTML5 slides, HTML reports and R + knitr. The switch from Sweave came with a few frustrations but I think overall it is way better - it is incredibly efficient and while some flexibility on...

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R Bootcamp Materials!

February 24, 2013
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R Bootcamp Materials!

Learn about ColoRs in R!Analyze model results with custom functions.Good and Bad GraphicsTo train new employees at the Wisconsin Department of Public Instruction, I have developed a 2-3 day series of training modules on how to get work done in R. These...

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R Bootcamp @ Sector67 in Madison

February 6, 2013
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I am pleased to announce that together with Justin Meyer (also from the Wisconsin Department of Public Instruction) I will be presenting a two hour version of the R Bootcamp. Sector67 is a collaborative maker/hacker space in Madison, and is a great ven...

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