Blog has Moved!!
My site will remain here but my blog has migrated to the address below: http://psychwire.wordpress.com/ Thanks!
Author: hayward
Hayward runs/owns the site.Charting the Defeat of AV using R (and some ggplot2 and merge operations on top)
In this post, I’ll be graphing some results from a recent referendum held here in the UK and combining it with the results of a set of local elections that were held at the same time. I’ll give some examples Continue Reading
Is R an ideal language to teach the fundamentals of programming to researchers with no experience in programming?
UPDATE: I’ve modified the title of this post a bit to clarify what I was really thinking when I wrote it. What I was really thinking was which programming language to choose to teach some fellow researchers how to get Continue Reading
Loops, Conditionals and Variables: A Basic Simulation in R
In this post, I’m going to go over some basics of using conditionals and loops in R. I’ll expand on the example I use here in future posts. The conditionals and loops will be used to create some dummy eye Continue Reading
Data Aggregation in R: plyr, sqldf and data.table
I’ve previously put up a couple of posts about aggregating data in R. In this post, I’m going to be trying some other alternative methods for aggregating the dataset. Before I begin, I’d like to thank Matthew Dowle for highlighting these to Continue Reading
Further Adventures in Visualisation with ggplot2
So I previously took a look at some data of player performance from a computer game. In this post, I’m going to do some further visualisations using ggplot2. The data consists of different types of player character, different roles for Continue Reading
Sexy, Geeky Graphs using ggplot2 in R
So I’ve been looking for some data to play with while learning R, other than the data I’m analysing for various experiments and papers I’m working on. I thought to myself, “Hey, this R stuff is pretty geeky. Can I Continue Reading
Aggregate Function in R: Making your life easier, one mean at a time
I previously posted about calculating medians using R. I used tapply to do it, but I’ve since found something that feels easier to use (at least to me). aggregated_output = aggregate(DV ~ IV1 * IV2, data=data_to_aggregate, FUN=median) aggregated_output The above Continue Reading
RStudio, Revolution Analytics and Deducer: A Tale of Three GUIs
I’m in the process of moving from SPSS to R at the moment. It’s not been the easiest of rides, but then learning how to do a core part of your job never really should be. It’s been fun, though Continue Reading
Pivot Tables and Medians in R
Pivot Tables are a useful way of aggregating data into the format that you’re after. In this example, I’m going to be using R to pivot some data and calculate medians for me. This is useful because Excel can calculate Continue Reading