How to plot a simple x and y chart in R?
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How to plot a simple x and y chart in R?

How to plot a simple x and y chart in R?

This recipe helps you plot a simple x and y chart in R

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Recipe Objective

Scatter plot is the simplest chart which uses cartesian coordinates to display the relation between two variables x and y. It is used to find any trend between the two variables.

This recipe demonstrates how to plot a simple x,y chart in R

STEP 1: Creating Example data

We will use an example of no of schools established in 2 states between 1970 and 2014

# years year_x = c('1970','1980', '1990', '2000', '2013', '2014') ​ ​ #no of schools in state1 corresponding to a particular year state_y1 = c(15, 30, 60, 120, 240, 300)

STEP 2: Plotting a basic scatter chart with multiple points on the graph

Using plot() function to plot the number of schools vs Year for a state

Syntax:

plot(X, y, type, col, main, xlab, ylab)

where,

  1. X = x values
  2. Y = y values
  3. col = colour of the line
  4. main = title of the graph
  5. xlab = xlabel of the plot
  6. ylab = ylabel of the plot
plot(year_x, state_y1, col = 'red', main = 'Number of schools vs Year', xlab = 'Year', ylab = 'Number of Schools')

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