hw6_jpark

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Running Code

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library(tidyverse)

── Attaching core tidyverse packages ──────────────────────── tidyverse 2.0.0 ──
✔ dplyr     1.2.0     ✔ readr     2.1.6
✔ forcats   1.0.1     ✔ stringr   1.6.0
✔ ggplot2   4.0.2     ✔ tibble    3.3.1
✔ lubridate 1.9.5     ✔ tidyr     1.3.2
✔ purrr     1.2.1     
── Conflicts ────────────────────────────────────────── tidyverse_conflicts() ──
✖ dplyr::filter() masks stats::filter()
✖ dplyr::lag()    masks stats::lag()
ℹ Use the conflicted package (<http://conflicted.r-lib.org/>) to force all conflicts to become errors

library(dplyr)
setwd("C:/Users/gun26/OneDrive/Desktop/Data-110/w6")
nations<-read.csv("nations.csv")

nations_m <- nations %>%
  mutate(gdp_tn = (gdp_percap*population)/10^12)

chart1_data <- nations_m %>%
  filter(country %in% c("China", "Germany", "Japan", "United States"))
ggplot(chart1_data, aes(x = year, y = gdp_tn, color = country)) + 
  geom_line() + geom_point() + 
  scale_color_brewer(palette="Set1") + 
  labs(title = "GDP in Trillions for Four Countries",
       x = "Year", y = "GDP (Trillions $)")+theme_minimal()

chart2_data <- nations_m %>% group_by(region, year) %>% summarise(total_gdp = sum(gdp_tn, na.rm = TRUE), .groups = "drop")
ggplot(chart2_data, aes(x = year, y = total_gdp, fill = region)) + 
  geom_area(color = "white", linewidth = 0.2) + 
  scale_fill_brewer(palette = "Set2") + 
  labs(title = "GDP by Region", x = "Year", y = "Total GDP (Trillions $)") +
  theme_minimal()