R Markdown

This is an R Markdown document. Markdown is a simple formatting syntax for authoring HTML, PDF, and MS Word documents. For more details on using R Markdown see http://rmarkdown.rstudio.com.

When you click the Knit button a document will be generated that includes both content as well as the output of any embedded R code chunks within the document. You can embed an R code chunk like this:

summary(cars)
##      speed           dist       
##  Min.   : 4.0   Min.   :  2.00  
##  1st Qu.:12.0   1st Qu.: 26.00  
##  Median :15.0   Median : 36.00  
##  Mean   :15.4   Mean   : 42.98  
##  3rd Qu.:19.0   3rd Qu.: 56.00  
##  Max.   :25.0   Max.   :120.00

Including Plots

You can also embed plots, for example:

Note that the echo = FALSE parameter was added to the code chunk to prevent printing of the R code that generated the plot. # Load necessary libraries library(tidyverse)

Import the CSV file

stock_df <- read_csv(“C:/Users/Richard/Documents/stock_df.csv”)

Reshape from wide to long format

stock_df_long <- stock_df %>% pivot_longer( cols = starts_with(“2019_week”), names_to = c(“year”, “week”), names_pattern = “([0-9]+)_week([0-9]+)“, values_to =”price” ) %>% mutate(year = as.integer(year), week = as.integer(week))

Display the first few rows of the reshaped data

head(stock_df_long)