# load package
library(tidyverse) # core functions
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library(tidyquant) # for Financial analysis
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# Import Data 
AAPL <- tq_get("AAPL")

Line Chart

AAPL %>%
    ggplot(aes(x = date, y= close)) + 
    geom_line() +
    labs(title = "AAPL Line Chart", y = "closing price", x = "") +
    theme_tq()

Bar Chart

AAPL %>%
    ggplot(aes(x = date, y= close)) + 
    geom_barchart(aes(open = open, high = high, low = low, close = close)) +
    labs(title = "AAPL Bar Chart", y = "closing price", x = "") +
    theme_tq()

Candlestick Chart

AAPL %>%
    tail(30) %>%
    ggplot(aes(x = date, y= close)) + 
    geom_candlestick(aes(open = open, high = high, low = low, close = close)) +
    labs(title = "AAPL Candlestick Chart", y = "closing price", x = "") +
    theme_tq()