R basics

R basics.r

# Package management: install packages and any dependencies
install.packages("rmarkdown", dependencies = TRUE, type = "win.binary")

# Load Packages
library(ggplot2)
library(tidyverse)

# Create toy dataframe
ab.seq <- as.data.frame(seq(from = 1, to = 100, by = 1))
ab.seq$new_var <- rep(0, times = 100)

# Load toy datasets from ggplot2, calling the object dia.dat
dia.dat <- diamonds
package:ggplot2

# Change column names
colnames(ab.seq)

# Check column names
colnames(ab.seq) <- c("new_var_name_a", "new_var_name_b")

# print data to console - cars is a built-in toy dataframe
head(ab.seq, n = 2)
head(cars)
head(cars$dist)
print(cars$dist)

# print/echo
print("hello world")

# Plot 'diamonds' dataframe, which comes with the ggplot package
ggplot(data = diamonds,
       mapping = aes(x = price,
                     y = carat,
                     colour = cut)) +
  geom_point() +
  labs(title = "Diamond Price, plotted against Carat",
       x = "Price",
       y = "Carat")

# Basic maths
my_data <- c(1, 1, 5, 6, 10, 11, 12, 11, 19)
mean(my_data)
sd(my_data)
max(my_data)
min(my_data)