hw02 ready for grading

[navysealtf9k]

@vincenzocoia @gvdr @ksedivyhaley @joeybernhardt @mynamedaike @pgonzaleze @derekcho

[KateJohnson]

Hi @navysealtf9k

• Including a link to your markdown file in your homework 2 README might also have been nice as that’s where I initially went
• In the ‘smell test’ section I would have preferred if you annotated the file with text rather than comments in your code
• I liked your use of sapply because it was different from what I did, but maybe it was a bit overused? For example, instead of sapply(gapminder, str), just do str(gapminder)
• Good use of dplyr (filter, mutate, summarise) but I found in a couple instances you could have used piping rather than creating intermediate datasets.
• I hadn’t seen the summaries_each function before, I’ll use that!
• Really good use of ggplots (bar chart, line char, scatter plot, box plot). They looked great!
• I really really liked the narrative of your research question and how in depth you went, super interesting!

Great job! Check Plus

P.S. I went surfing in Arugam Bay this summer and absolutely loved Sri Lanka! It's such a beautiful country.

[vmichalowski]

Hi @navysealtf9k Nice exploration of ggplot's functions! Something I noticed is the x-axis in ggplot automatically sets the axis labels in a way that doesn't make it obvious where each year intersects with the line. This is something I've been trying to figure out how to change myself, and haven't found a good way to do yet, but something I've tried (that is probably not the cleanest or efficient code) is to include the "breaks" function in scale_x_continuous(). Also, for your plot comparing log_gdp and year, it's a little difficult to interpret with so many countries. I like how with your boxplot you took the top three gdp countries as comparison to Sri Lanka, and I think that would have been a great approach to take here too. I also thought you made really good use of comments. It made it really easy for me to follow your train of thought and what you were trying to do with each piece of code. Overall, great work! Victoria