Page 266 - Data Science class 11
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A simple scatterplot is created using the plot() function.
Syntax
The basic syntax for creating a scatterplot in R is:
plot(x, y, main, xlab, ylab, xlim, ylim, axes)
The following is a description of the parameters used:
• x is the data set whose values are the horizontal coordinates.
• y is the data set whose values are the vertical coordinates.
• main is the title of the graph.
• xlab is the label in the horizontal axis.
• ylab is the label in the vertical axis.
• xlim is the limit of the values of x used for plotting.
• ylim is the limit of the values of y used for plotting.
• axes indicates whether both axes should be drawn on the plot.
Example
We use the data set "mtcars" available in the R environment to create a basic scatterplot. This is discussed in 7.1
above. Let’s use the columns "wt" and "mpg" in mtcars.
Type the following code snippet into the script panel of R:
input <- mtcars[,c(‘wt’,’mpg’)]
print(head(input))
When we execute the above code, it produces the following result:
Creating the Scatterplot
The below script will create a scatterplot graph for the relation between wt(weight) and mpg(miles per gallon).
# Getting the input values.
input <- mtcars[,c(‘wt’,’mpg’)]
# Give the chart file a name.
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