Adding statistical significance indicators to your data visualizations is crucial for communicating research findings effectively. When working with ggplot2 in R, displaying p-values directly on scatter plots helps viewers immediately understand the statistical relationship between variables. In this comprehensive tutorial, you’ll learn how to annotate ggplot2 plots with p-values from linear regression analysis. We’ll cover… Continue reading How to Annotate a plot with P-value in ggplot2
Category: R
How to order facet variable in grouped boxplot by mean difference between groups in ggplot2
In this tutorial, we’ll dive into grouped boxplots using ggplot2 in R and demonstrate how to reorder facet variables based on the mean difference between groups. Imagine comparing sales performance across multiple regions or test scores across different schools—by reordering facets, you can immediately highlight which groups stand out. We’ll walk you through calculating mean… Continue reading How to order facet variable in grouped boxplot by mean difference between groups in ggplot2
How to Deal with Outliers in boxplot with ggplot2
In this post, we will learn of two ways to deal with outlier data points while making a boxplot. By default, ggplot2 boxplot() identifies the outliers and disply them as black dots at the boxplot extremes. One of the options to deal with outlier is to ignore them. With ggplot2, there are two ways to… Continue reading How to Deal with Outliers in boxplot with ggplot2
How to Move Facet strip label to the bottom
In this tutorial, we will learn how to move the strip label title text in ggplot2’s facet* functions to the bottom. By default, facet_wrap() creates a box for each strip with a label at the top of the small multiple plot. In this post, we will show how to move the strip label to the… Continue reading How to Move Facet strip label to the bottom
4 Ways to have Plots Side by side in ggplot2
In this post, we will learn how to combine two plots side-by-side using four different approaches. First, we will show how we can use facet_wrap() function in ggplot2, if we are interested in similar plots (small multiples) side by side. Next three approaches are more general, i.e. combining any two plots side by side using… Continue reading 4 Ways to have Plots Side by side in ggplot2