My Twitter pipeline collects the tweets with R but processes them with Python, but tor the event data class I just taught at APSA (material available here), I wanted to keep all of the code in R. I therefore needed to replace my Python code with R code that would open text files containing raw […]
I recently had a large dataset where I wanted to make a series of plots with different variables on the y-axis. I remembered that a few years ago I great frustrated that I could not do this with ggplot, so I moved on. This time, I was successful. The key, as this Stack Overflow answer […]
While I have my issues with the tidyverse, one feature I am enamored with is the ability to assign values to observations in grouped data without aggregating the data. This assigning is done by using the mutate() command instead of summarize(). I am in the middle of some data processing in a Python pipeline where I […]
I often add text in plots. This text can be a legend or labeling certain points, in which case assigning it x and y coordinates are easy. Often times, the text is descriptive, e.g. the slope of a line or the number of observations in a sample. Customizing (x,y) coordinates in that case is simple […]
I was making a plot comparing how five outcomes varied by whether they occurred during Period 1 or Period 2. I wanted to plot the standard error of each point, which would often cause points to become hidden by the error bars. The obvious answer is to shift the 10 points (5 outcomes, 2 treatments) […]
In today’s edition of Becoming a Functional Data Analyst, I am writing to remind myself not to create interaction variables during data munging. That is, when acquiring, cleaning, and aggregating data, I find it easier to not interact variables I will later need. Instead, it is easier to keep variables as they are and only […]
TL;DR: htmlTable and tableHTML are better than xtable for creating HTML tables in R. Today, I had to make tables for a Word document, meaning I could not convert my R table to Latex code. (I know I know, pandoc. Just another crusty old thing to learn.) In the past, I had used xtable, but […]
[UPDATE: My best use of academic Twitter yet. I tweeted a link to this post and quickly got pwnd by the internet. What I learned: there is a function, ggsave(), that does this that I did not know about. So use that instead of the hacky workaround I came up with. Never would’ve learned if […]
Today, I need to launch a new AWS EC2 instance to collect some more tweets. Since I have done this several times, I used my AWS console to replicate the most recent instance I created that collects tweets. Everything ran smoothly until I tried to install streamR, my go to library for collecting tweets in […]
This post is a sequel to my wildly popular – ok, not wildly popular, but very useful for me – post documenting my function to create a forest plot. Recently, I made models using cross-validation via R’s caret package. The train() function does the heavy lifting, but the problem is that its output is a […]
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