line.R

# A line graph has a line that connects all the points in a diagram
# To create a line, use the plot() function and add the type parameter with a value of "l"
plot(1:10, type="l")


# LINE COLOUR
# The line color is black by default. To change the color, use the col parameter
plot(1:10, type="l", col="blue")


# LINE WIDTH
# To change the width of the line, use the lwd parameter (1 is default, while 0.5 means 50% smaller, and 2 means 100% larger)
plot(1:10, type="l", lwd=2)


# LINE STYLES
# The line is solid by default. Use the lty parameter with a value from 0 to 6 to specify the line format
plot(1:10, type="l", lwd=5, lty=3)

# Available parameter values for lty:
  # 0 removes the line
  # 1 displays a solid line
  # 2 displays a dashed line
  # 3 displays a dotted line
  # 4 displays a "dot dashed" line
  # 5 displays a "long dashed" line
  # 6 displays a "two dashed" line


# MULTIPLE LINES
# To display more than one line in a graph, use the plot() function together with the lines() function
line1 <- c(1,2,3,4,5,10)
line2 <- c(2,5,7,8,9,10)

plot(line1, type = "l", col = "blue")
lines(line2, type="l", col = "red")