# R Line | R Line Graphs - r - learn r - r programming

- A line chart is a graph that connects a series of points by drawing line segments between them.
- These points are ordered in one of their coordinate (usually the x-coordinate) value.
- Line charts are usually used in identifying the trends in data.

## Syntax

- The basic syntax to create a line chart in R is −

## Following is the description of the parameters used −

**v**is a vector containing the numeric values.**type**takes the value "p" to draw only the points, "l" to draw only the lines and "o" to draw both points and lines.**xlab**is the label for x axis.**ylab**is the label for y axis.**main**is the Title of the chart.**col**is used to give colors to both the points and lines.

## Example

- A simple line chart is created using the input vector and the type parameter as "O".
- The below script will create and save a line chart in the current R working directory.

## Sample Code

## Output

## Line Chart, Color and Labels

- The features of the line chart can be expanded by using additional parameters.
- We add color to the points and lines, give a title to the chart and add labels to the axes.

## Sample Code

## Output

## Multiple Lines in a Line Chart

- More than one line can be drawn on the same chart by using the lines() function.
- After the first line is plotted, the lines() function can use an additional vector as input to draw the second line in the chart,