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Date	Title	Categories
July 29, 2025 at 4:58 PM	What's next? Policy analytics concentration and certificate Program Evaluation Comparative Public Administration	advice
July 29, 2025 at 4:57 PM	Class website future	course details
July 29, 2025 at 4:54 PM	Sessions 13 and 14 tips and FAQs Why doesn’t gapminder data appear in the environment panel? Is there a way to see which packages have which data? Some of the words in my word frequency/tf-idf plot were out of order—how can I fix that? Cleaning up text is always specific and specialized I tried filtering out words like `i'm` and they didn’t filter—why not? I tried filtering out blank words with `drop_na()` and it didn’t work—why not? Sometimes the colors in the viridis palettes are too dark, neon, pale, or light—can I adjust those?	FAQs
July 22, 2025 at 4:05 PM	Session 12 tips and FAQs Why can’t I see the geometry column? It should be there? Can we make interactive maps with R? Why do we use an empty `ggplot()` call for these functions? What’s the difference between a tibble and a tribble? How many decimal points should I use when I’m working with latitude and longitude? Can I use `geom_label_repel()` with maps? Can I use a heatmap on a map? I tried to make a map and countries are missing—why? I tried to make a map of just Europe and it includes more than just Europe? Saving data that takes a long time to make	FAQs
July 22, 2025 at 12:17 PM	Session 11 tips and FAQs Do people use Plotly and Quarto dashboards in the real world? My plot didn’t translate perfectly to ggplotly—why? I tried to render a dashboard but it appeared as a regular HTML file—why? When should we use a dashboard vs. a full Shiny app? I rendered my file / dashboard but it didn’t appear in the Viewer panel—why not? Do people use viridis palettes in real life? I’m bored with ggplot’s default colors and/or viridis—how can I use other color palettes?	FAQs
July 15, 2025 at 4:09 PM	Curiosity and bare minimuming	FAQs
July 15, 2025 at 2:48 PM	Two layout-related tips for fancier plots and documents Extra space in {patchwork} Use the margins	advice
July 15, 2025 at 11:21 AM	Session 10 tips and FAQs How do I include a separate image in my document? When should we add annotations and text in R vs. in a separate program? I have numbers like 20000 and want them formatted with commas like 20,000. Can I do that automatically? How can I get month and weekday names or abbreviations for dates? Can I get these automatic month and day names in non-English languages?	FAQs
July 15, 2025 at 9:44 AM	Session 9 tips and FAQs What’s the difference between `geom_text()` and `annotate(geom = "text")`? How do I know which aesthetics geoms need to use? It’s annoying to have to specify annotation positions using the values of the x/y axis scales. Is there a way to say instead? What’s the difference between `geom_text()` and `geom_label()`? What does `update_geom_defaults()` do? How do annotations work with facets? The importance of layer order I tried pivoting my data like you did to make my own change-in-ranking data but got a bunch of empty rows—why? Seeds—why?	FAQs
July 9, 2025 at 12:17 PM	No more answer keys	course details
July 9, 2025 at 11:08 AM	Mini project 1 feedback Warnings and messages ALL CAPS Figure in the document doesn’t match the standalone image Sorting and ordering Unbalanced facets Overlapping text Commas	FAQs feedback
July 8, 2025 at 10:16 PM	Sessions 7 and 8 tips and FAQs Is there some place I can find R packages? There are so many! When is it better to use `augment()` vs. `marginaleffects::predictions()`? I’ve used `summary()` in the past to look at model objects, but you recommend using `tidy()`. Why? I tried to render my document and got an error about duplicate chunk labels. Why? I tried calculating something with `sum()` or `cor()` and R gave me NA instead of a number. Why? I want my bars to be sorted in my plot. How can I control their order? My data has full US state names but I want to use abbreviations (or regions). Is there a way to automatically convert from names to something else? I saved a plot with `ggsave()` and it has a black background—why?	FAQs
July 2, 2025 at 12:16 PM	Tips for fixing broken code Slow down, simplify, and do small things Reformat the code Run the code incrementally	advice
July 2, 2025 at 11:12 AM	A few quick general R tips Talking about packages and functions Nicer {ggplot2} documentation The tidyverse package shortcut Chunk labels Code style	FAQs
July 1, 2025 at 11:10 PM	Time to think about mini project 1!	course details
July 1, 2025 at 2:46 PM	Make RStudio your own Change the theme Don’t save the workspace when closing Turn on rainbow parentheses Turn on color previews Turn on a code margin Change the panel layout and add more columns Bonus: Positron!	advice
July 1, 2025 at 1:32 PM	Sessions 5 and 6 tips and FAQs What do Quarto documents look like in real life? Can they be used for real things like reports? Why should I use `ggsave()` instead of just rendering a Quarto document? I made a bunch of changes to my plot with `theme()` but when I used `ggsave()`, none of them actually saved. Why? Does the order of theme things matter? I made changes with `theme()` and then wiped them out with `theme_minimal()`? If I want to use the same theme for all the plots in my document, do I need to reuse all that code all the time? Why would we want to use `rel(1.4)` instead of actual numbers when sizing things? I’m using macOS and couldn’t render as PDF when using a custom font—how do I fix that? In chapter 22, Wilke talks about tables—is there a way to make pretty tables with R? Double encoding and excessive legends Legends are cool, but I’ve read that directly labeling things can be better. Is there a way to label things without a legend? My histogram bars are too wide / too narrow / not visible. How do I fix that?	FAQs
June 25, 2025 at 11:09 PM	Session 4 FAQs I can’t remember everything I need to type / I can’t memorize all the code / I had to look stuff up on the internet / Why didn’t you cover this specific thing? It seems weird that we can randomly jitter points to accurately reveal relationships? Why does my heatmap have blank spaces in it? I want my lollipop/bar chart to go sideways—how do I do that? Why does R keep yelling at me with warnings and messages? Why do I keep getting messages like `summarise() has grouped output by 'BLAH'` when using `group_by()` and `summarize()`? How can I hide warnings and messages? Why did we need to group a second time when calculating the proportions for the heatmap? How can I add a line break to the text in my plot? How can I control the dimensions of my figures?	FAQs
June 25, 2025 at 11:00 PM	Session 3 FAQs What’s the difference between the `\|>` and `%>%` pipes? Why do we sometimes combine code with `+` and sometimes with `\|>`? Why doesn’t `group_by(species)` work but `group_by(Species)` does? Why does `aes()` sometimes appear in `ggplot()` and sometimes in `geom_WHATEVER()`? Installing vs. using packages Why are my axis labels all crowded and on top of each other? How do I fix that? Why isn’t the example code using `data = whatever` and `mapping = aes()` in `ggplot()` anymore? Do we not have to use argument names? What’s the difference between `geom_bar()` and `geom_col()`? What’s the difference between `read_csv()` vs. `read.csv()`? What’s the difference between `facet_grid()` and `facet_wrap()`? Why do I sometimes see `facet_wrap(vars(blah))` and somtimes `facet_wrap(~ blah)`? Why did we need to group and summarize before making the Lord of the Rings plots? I didn’t and the plot still worked	FAQs
June 19, 2025 at 12:16 AM	Zeroes and ✓−s in the gradebook	course details
June 18, 2025 at 8:26 PM	Session 2 FAQs Why do you use ✓s for grades? Why does `#` mean both headings and code comments? I will never do anything with graphic design—why did we have to learn these principles? How does CRAP relate to other things like the Gestalt Principles? Will following CRAP lead to the same final designs? Does CRAP only work for single-page things like graphs and posters? Or does it work for reports and books? I noticed Illustrator isn’t free for GSU students anymore. Are there other graphics editors? Is there a way to check that my color palettes are accessible if I’m not using a premade one? Where can I find fonts to use?	FAQs
June 18, 2025 at 6:22 PM	Copy, paste, and tweak	advice
June 18, 2025 at 2:58 PM	Making cleaner, nicer Quarto documents Render often Check for broken code chunks Check that your text looks okay Don’t install packages in your document Clean up warnings and messages Global chunk options Fancy document settings Chunk names	advice
June 18, 2025 at 12:46 AM	Session 1 tips and FAQs What’s the difference between Source and Visual mode in the editor window? What’s the difference between R Markdown and Quarto? Why don’t I have options to render to PDF (or Word or HTML)? I pasted that starter code for exercise 1 and it still doesn’t show different formats? Rendered document format for iCollege Why does it matter where we put files like `cars.csv`? How does `group_by()` work? Why did we have to group by `class` and not `cty` and `class`? How do we know which type of graph to use for different types of data? Do you have any tips for remembering all the different functions we’re learning? There are so many!	FAQs
June 10, 2025 at 12:35 PM	How to ask for help Don’t suffer in silence! Use Discord in public Help us help you High resolution questions Unanswered questions Discord question etiquette Calendly + Webex appointments	advice
June 9, 2025 at 3:51 PM	First day of class!	getting started
June 5, 2025 at 1:36 PM	Building community on Discord Class community Online community	advice
June 5, 2025 at 1:03 PM	Announcements and updates	getting started
June 5, 2025 at 12:33 PM	Important R stuff	getting started
June 4, 2025 at 9:48 PM	Welcome to class!	getting started

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