# Blog Archives

## ggplot2: How Geoms & Aesthetics ≈ Whipped Cream

March 21, 2018
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In this post I have a few goals: 1. Become (re-)familiar with available geoms 2. Become (re-)familiar with aesthetic mappings in geoms (stroke who knew?) 3. Answer these questions: How often do various geoms appear and how often do they … Continue reading →

## Math Notation for R Plot Titles: expression, bquote, & Greek Letters

March 15, 2018
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In this post you will learn: How to create expressions that have mixed (1) strings, (2) expressions, (3) variables & (4) Greek letters How to pass in values as variables to an expression I wanted to name this post “Ahhhhhhhhhhh #\$@%&!!!!” … Continue reading →

## Using R to Reason & Test Theory: A Case Study from the Field of Reading Education

February 28, 2018
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Note: Word Press messes up the code. Find the code here: https://github.com/trinker/RandomCaseEffect This past week I was preparing slides for a reading assessment class with a lecture focus on the Visual Word Form Area [VWFA] (Cohen, et al., 2000). This … Continue reading →

## Minimal, Explicit, Python Style Package Loading for R

February 22, 2018
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About a year and a half back I was working in Python a bit and became accustomed to the explicit importing of modules (akin to R packages) and functions. Python imports packages like this: import tidyr import dplyr as dp … Continue reading →

## Easily Make Multi-tabbed .xlsx Files with openxlsx

February 14, 2018
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This is a quick script showing how to make multi-tabbed .xlsx files. I recently had the need to do this and used the flexible openxlsx package maintained by : Alexander Walker. The package is described by the author like this: … Continue reading →

## Ordering Categories within ggplot2 Facets

December 23, 2016
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I saw Simon Jackson’s recent blog post regarding ordering categories within facets. He proposed a way of dealing with the problem of ordering variables shared across facets within facets. This problem becomes apparent in text analysis where words are shared … Continue reading →

## googleformr at Work: Pneumatic Road Tube Allegory

May 12, 2016
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Steve Simpson (@data_steve) created the googleformr package to enable users to easily send information to a Google Form.  It’s a nice way to send and securely store data via R and the price is great…FREE! A Pneumatic Road Tube Allegory…Kinda … Continue reading →

## pacman Ver 0.4.1 Release

March 31, 2016
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It was just over a year ago that Dason Kurkiewicz and I released pacman to CRAN.  We have been developing the package on GitHub in the past 14 months and are pleased to announce these changes have made their way … Continue reading →

## How do I re-arrange??: Ordering a plot re-revisited

March 3, 2016
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Several years back I wrote a two part blog series in response to seeing questions about plotting and reordering on list serves, talkstats.com, and stackoverflow.  Part I discussed the basics of reordering plots by reordering factor levels.  The essential gist was: … Continue reading →

## Cracking Safe Cracker with R

May 30, 2015
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My wife got me a Safe Cracker 40 puzzle a while back. I believe I misplaced the solution some time back. The company, Creative Crafthouse, stands behind their products. They had amazing customer service and promptly supplied me with a … Continue reading →