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How to labels and title of the plot

Zigya Acadmey 0

You can easily add the main title and axis labels with arguments to the plot() function in R to enhance the quality of your graphic.


plot(x, y, main = NULL, xlab = NULL, ylab = NULL ...)


xthe coordinates of points in the plot. Alternatively, a single plotting structure, function or any R object with a plot method can be provided.
ythe y coordinates of points in the plot, optional if x is an appropriate structure.
mainan overall title for the plot. The default is "XY plot".
ylaba title for the y-axis. The default is "Outcome".
xlaba title for the x-axis. The default is "Condition".

First we need data

Let’s create data for our plot

Here some values which we will use to make a plot.

# Create data
> x <- c(1:10)
> y <- x*x

Once, we have the values ready we can start creating our plot.

# Create a plot the data we just generated
> plot(x, y)
Default Plot

Now, as you can see it is a default plot with no title not proper x and y labels too.

Likewise, we will now add labels and titles to our plot. We need three arguments
 Main plot title
xlab: x-axis label
ylab: y-axis label

Let’s add title as “y=x^2 plot” and label the axis.

> plot(x, y, main="y=x^2 plot", xlab="x axis", ylab="y axis")


Hence, we studied how to label axis and add titles to a plot using plot() function in R.

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