New, Fall-Term Meeting Time Starts 09/01

Following the poll we opened several weeks ago, we have selected a new meeting time for the fall. Beginning on September 1st, we will begin meeting on Fridays from 10:00 – 11:30am. We will be meeting in the same location as before, in the Seminar Room of the Weigel Information Commons (WIC) (See the “Finding … Continue reading New, Fall-Term Meeting Time Starts 09/01

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Scheduling Fall-Term Meetings

We are currently choosing a new time to meet during summer 2017. If you would like to join us during the fall term, please let us know which times work for you through our Doodle poll. The poll closes on August 14th.

Spaghetti Plots for Visualizing a Continuous Dep. Var.

#This is a way to visualize your dataset prior to doing any longitudinal modeling #This assumes your data is already in "long" format #First load dataset mydata<-read.csv("~/mydata.csv") #Then, do Spaghetti plots with "ggplot2", combine with "gridExtra": #First load essential packages: library(ggplot2) library(gridExtra) #allows you to combine ggplots #Create a theme for your plots (optional): mytheme … Continue reading Spaghetti Plots for Visualizing a Continuous Dep. Var.

Reshaping data from long-ish to wide (and back to fully long)

Today we had a hackathon-style session on changing data from long-ish format (in which participants represented in a dataset may have more than one row -- for example, representing timepoints) to wide format (in which each participant is represented in only one row), and then back to fully long (in which each row represents one … Continue reading Reshaping data from long-ish to wide (and back to fully long)