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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
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,
- X = x values
- Y = y values
- col = colour of the line
- main = title of the graph
- xlab = xlabel of the plot
- 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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