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The post How to Set Axis Limits in ggplot2? appeared first on finnstats.

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How to Set Axis Limits in ggplot2?, ggplot2 can frequently be used to set the axis bounds on a plot. The following functions make it simple to accomplish this:

xlim(): defines the x-axis’s lowest and upper limits.

ylim(): defines the y-axis’s lower and upper limits.

Keep in mind that both of these approaches will eliminate data that is outside of the restrictions, which occasionally has unforeseen results.

Use coord_cartesian() instead to alter the axis bounds without losing data observations.

The coord_cartesian() function provides the x- and y-axis bounds without removing observations.

## How to Set Axis Limits in ggplot2

Using the scatterplot below, which was created using the built-in R dataset mtcars, this tutorial demonstrates various uses for these functions.

Let’s load the library ggplot2

`library(ggplot2)`

Now we can create a simple scatterplot

```ggplot(mtcars, aes(mpg, wt)) +
geom_point()```

Example 1: Set X-Axis Limits Using xlim()

Using the xlim() method, the scatterplot’s x-axis boundaries can be defined as seen in the following code:

make a scatterplot with an x-axis of 10 to 40.

```ggplot(mtcars, aes(mpg, wt)) +
geom_point() +
xlim(10, 40)```

Additionally, you can use NA to merely provide the upper limit of the x-axis and let ggplot2 determine the lower limit for you.

Now we can create a scatterplot with x-axis upper limit at 40

```ggplot(mtcars, aes(mpg, wt)) +
geom_point() +
xlim(NA, 40)```

Example 2: Set Y-Axis Limits Using ylim()

Using the ylim() method, the scatterplot’s y-axis boundaries can be defined as seen in the following code.

make a scatterplot using a 2 to 4 y-axis.

```ggplot(mtcars, aes(mpg, wt)) +
geom_point() +
ylim(2, 4)```
```Warning message:
Removed 8 rows containing missing values (geom_point).```

Now let’s try to create a scatterplot with y-axis lower limit at 2

```ggplot(mtcars, aes(mpg, wt)) +
geom_point() +
xlim(2, NA)```

Example 3: Set Axis Limits Using coord_cartesian()

The coord_cartesian() method is used to set the scatterplot’s y-axis bounds as shown in the following code.

generate a scatterplot with a 2–4 y-axis.

```ggplot(mtcars, aes(mpg, wt)) +
geom_point() +
coord_cartesian(xlim =c(10, 30), ylim = c(2, 4))```

ggplot2 Guide

If you are interested to learn more about data science, you can find more articles here finnstats.

The post How to Set Axis Limits in ggplot2? appeared first on finnstats.

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