Fix Aspect Ratio in ggplot2 Plot in R (2 Examples)
In this R tutorial you’ll learn how to use the coord_fixed function to set a fixed aspect ratio.
The table of content is structured as follows:
Let’s jump right to the examples:
Exemplifying Data, Add-On Packages & Default Plot
As a first step, we’ll need to create some example data:
set.seed(347865) # Example data data <- data.frame(x = rnorm(100, 0, 5), y = rnorm(100)) head(data) # Print head of example data # x y # 1 5.320164 -0.62260359 # 2 -10.665791 -0.06837196 # 3 -3.872701 -0.19777942 # 4 -4.781276 -0.83737958 # 5 -4.704341 -0.24583468 # 6 2.868131 -0.44292606
The previous output of the RStudio console shows that our exemplifying data has two numeric columns with the names x and y.
If we want to plot our data with the ggplot2 add-on package, we also need to install and load ggplot2:
install.packages("ggplot2") # Install & load ggplot2 library("ggplot2")
Next, we can plot our data:
ggp <- ggplot(data, aes(x, y)) + # Basic ggplot2 plot geom_point() ggp # Print basic ggplot2 plot
As shown in Figure 1, we drew a basic ggplot2 scatterplot with the previous R syntax.
Example 1: Fixed Aspect Ratio Using coord_fixed Function
In this Example, I’ll illustrate how to set a fixed aspect ratio in a ggplot2 plot in R. Have a look at the following R code:
ggp + coord_fixed() # Apply coord_fixed
The output of the previous R programming syntax is visualized in Figure 2: You can see a ggplot2 scatterplot with fixed proportions of the x- and y-axes. This fixed aspect ratio is set to 1 in this example.
Example 2: Fixed Aspect Ratio Using coord_fixed Function & ratio Argument
Example 2 shows how to set aspect ratios with a different ratio than 1. In the example, we’ll use an aspect ratio of 5:
ggp + coord_fixed(ratio = 5) # Apply coord_fixed & ratio
The output of the previous R syntax is illustrated in Figure 3: As you can see the aspect ratio is still fixed, but with a different ratio of the two axes.
Video, Further Resources & Summary
Would you like to know more about the ggplot2 package? Then you may have a look at the following video of my YouTube channel. I explain how to use the ggplot2 package in much more detail:
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In addition, you could have a look at the other tutorials of https://www.statisticsglobe.com/. You can find a selection of articles about the ggplot2 package below:
- Set Axis Limits in ggplot2 R Plot
- Set ggplot2 Axis Limit Only on One Side
- Zoom into ggplot2 Plot without Removing Data
- asp in Base R Plot
- Scatterplot in R
- R Graphics Gallery
- The R Programming Language
To summarize: In this post, I illustrated how to fix aspect ratios of ggplot2 graphics and change the proportions from square to rectangle in R programming. Don’t hesitate to let me know in the comments below, in case you have any further questions.
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