Addition of more points to a Plot in R Programming – points() Function

function in R Language is used to add a group of points of specified shapes, size and color to an existing plot.**points()**

Syntax:points(x, y, cex, pch, col)

Parameters:x, y:Vector of coordinatescex:size of pointspch:shape of pointscol:color of points

**Sample Scatter Plot:**

`# R program to create a scatter plot` ` ` `# Creating coordinate vectors` `x <` `-` `c(` `1.3` `, ` `3.5` `, ` `1.4` `, ` `-` `3.1` `, ` `5.7` `, ` `2.4` `, ` `3.3` `, ` `2.5` `, ` `2.3` `, ` `1.9` `, ` `1.8` `, ` `2.3` `)` `y <` `-` `c(` `2.5` `, ` `5.8` `, ` `2.1` `, ` `-` `3` `, ` `12` `, ` `5` `, ` `6.2` `, ` `4.8` `, ` `4.2` `, ` `3.5` `, ` `3.7` `, ` `5.2` `)` ` ` `# Plotting the graph` `plot(x, y, cex ` `=` `1` `, pch ` `=` `3` `, xlab ` `=` `"x"` `, ylab ` `=` `"y"` `, col ` `=` `"black"` `)` |

**Output:**

Here, a sample scatter plot is created for the addition of points.

**Example 1: Adding points to scatterplots**

`# R program to add points to a plot` ` ` `# Creating coordinate vectors` `x <` `-` `c(` `1.3` `, ` `3.5` `, ` `1.4` `, ` `-` `3.1` `, ` `5.7` `, ` `2.4` `, ` `3.3` `, ` `2.5` `, ` `2.3` `, ` `1.9` `, ` `1.8` `, ` `2.3` `)` `y <` `-` `c(` `2.5` `, ` `5.8` `, ` `2.1` `, ` `-` `3` `, ` `12` `, ` `5` `, ` `6.2` `, ` `4.8` `, ` `4.2` `, ` `3.5` `, ` `3.7` `, ` `5.2` `)` `plot(x, y, cex ` `=` `1` `, pch ` `=` `3` `, xlab ` `=` `"x"` `, ylab ` `=` `"y"` `, col ` `=` `"black"` `)` ` ` `# Creating coordinates to be added ` `x2 <` `-` `c(` `4.2` `, ` `1.2` `, ` `-` `2.4` `, ` `-` `0.3` `, ` `-` `1.3` `, ` `2.5` `)` `y2 <` `-` `c(` `2.4` `, ` `4.3` `, ` `1.4` `, ` `2.3` `, ` `-` `2` `, ` `4.5` `)` ` ` `# Calling points() function` `points(x2, y2, cex ` `=` `2` `, pch ` `=` `6` `, col ` `=` `"blue"` `)` |

**Output:**

**Example 2: Adding points of different properties**

`# R program to add points to a plot` ` ` `# Creating coordinate vectors` `x <` `-` `c(` `1.3` `, ` `3.5` `, ` `1.4` `, ` `-` `3.1` `, ` `5.7` `, ` `2.4` `, ` `3.3` `, ` `2.5` `, ` `2.3` `, ` `1.9` `, ` `1.8` `, ` `2.3` `)` `y <` `-` `c(` `2.5` `, ` `5.8` `, ` `2.1` `, ` `-` `3` `, ` `12` `, ` `5` `, ` `6.2` `, ` `4.8` `, ` `4.2` `, ` `3.5` `, ` `3.7` `, ` `5.2` `)` `plot(x, y, cex ` `=` `1` `, pch ` `=` `3` `, xlab ` `=` `"x"` `, ylab ` `=` `"y"` `, col ` `=` `"black"` `)` ` ` `# Creating coordinates to be added ` `x2 <` `-` `c(` `4.2` `, ` `1.2` `, ` `-` `2.4` `, ` `-` `0.3` `, ` `-` `1.3` `, ` `2.5` `)` `y2 <` `-` `c(` `2.4` `, ` `4.3` `, ` `1.4` `, ` `2.3` `, ` `-` `2` `, ` `4.5` `)` ` ` `# Calling points() function` `points(x2, y2, cex ` `=` `2` `, pch ` `=` `6` `, col ` `=` `"blue"` `)` ` ` `# Adding points of different shape and size` `x3 <` `-` `c(` `4` `, ` `0` `)` `y3 <` `-` `c(` `7` `, ` `-` `2` `)` ` ` `points(x3, y3, cex ` `=` `4` `, pch ` `=` `14` `, col ` `=` `"green"` `)` |

**Output:**