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R Line

type = "l" is used to create a Line plot.
Used in plot() function.
Instead of points it shows a line.
Syntax plot(x, y, type = "l")

Example

``````# Create sample data
x <- 1:10
y <- x^2

# Create a line plot
plot(x, y, type = "l", col = "blue", lty = 2, lwd = 2, main = "Line Plot", xlab = "X-axis", ylab = "Y-axis")``````
1. type = "l" specifies a line plot.
2. col = "blue" sets the color of the line to blue.
3. lty = 2 sets the line type to dashed (you can use different values for various line types).
4. lwd = 2 sets the line width.

There are different types of line styles(lty) based on the values

1. lty = 1 - Solid line (default).
2. lty = 2 - Dashed line.
3. lty = 3 - Dotted line.
4. lty = 4 - Dot-dash line.
5. lty = 5 - Long-dash line.
6. lty = 6 - Two dash-dot line.
7. lty = 7 - Dash-dot-dot line.

Example

``````# Create sample data
x <- 1:10
y <- x^2

# Create a plot with different line types
plot(x, y, type = "n", main = "Line Types", xlab = "X-axis", ylab = "Y-axis")

lines(x, y, col = "blue", lty = 1, lwd = 2)  # Solid line
lines(x, y + 10, col = "green", lty = 2, lwd = 2)  # Dashed line
lines(x, y + 20, col = "red", lty = 3, lwd = 2)  # Dotted line
lines(x, y + 30, col = "purple", lty = 4, lwd = 2)  # Dot-dash line
lines(x, y + 40, col = "orange", lty = 5, lwd = 2)  # Long-dash line
lines(x, y + 50, col = "brown", lty = 6, lwd = 2)  # Two dash-dot line
lines(x, y + 60, col = "pink", lty = 7, lwd = 2)  # Dash-dot-dot line``````

Using lines()

lines() are used to show a line connecting all the points.
This function is mainly used when we dont use type="l" i plot() function.
So that we can show point and connecting lines.

Example

``````# Create another set of data
x2 <- 1:10
y2 <- 3 * x2 - 1 + rnorm(10)

# Create a new scatter plot
plot(x2, y2, main = "Scatter Plot with Another Line", xlab = "X-axis", ylab = "Y-axis", pch = 16, col = "green")

# Add a line to the existing plot using lines()
lines(x2, y2, col = "orange", lty = 2)``````

We can use albine() function to show an line for the points.
Mainly used in scatterplot.

type = "b" plot()

Type = "b" plot creates a plot with both points and lines.
The plot will have a data points which will be connected by lines.
Syntax plot(x, y, type = "b")

Example

``````# Create sample data
x <- 1:10
y <- x^2

# Create a plot with points and lines
plot(x, y, type = "b", col = "blue", pch = 16, lty = 2, lwd = 2, main = "Points and Lines", xlab = "X-axis", ylab = "Y-axis")``````

Quick Recap - Topics Covered

R Line
R Line
Types of Line Styles(lyt)

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