Adding data points to the violin plot
The width of a dot corresponds to the bin width in the case of a dot plot. This is followed by the case where the dots are stacked, where each of the dots represents one observation. To add data points we use geom_dotplot() after creating a violinplot.
Syntax:
geom_dotplot(mapping = NULL,data = NULL,binwidth = NULL,binaxis = “x”,stackdir = “up”)
Parameter :
- mapping – Set of aesthetic mappings created by aes()
- data – The data to be displayed
- binaxis – The axis to bin along, “x” or “y”
- stackdir – Defines the direction in which the dots should be stacked
- dotsize – The diameter of the dots relative to binwidth
Example: Adding data points to violin plot.
R
# defining the columns of the data framedata_frame <- data.frame(col1=c(rep("A", 10) , rep("B", 12) , rep("C", 18)), col2=c( sample(2:5, 10 , replace=T) , sample(4:10, 12 , replace=T), sample(1:7, 18 , replace=T)) )# plotting the data frameggplot(data_frame, aes(x = col1, y = col2, fill = col1)) +# adding violin plot geom_violin(alpha = 0.5) + geom_dotplot(binaxis = "y", stackdir = "center", dotsize = 0.5) |
Output:
Violinplot with Data Points in R
How To Make Violinplot with Data Points in R?
In this article, we will discuss how to make violinplot with data points in the R programming language.
A violin plot is a compact display of a continuous distribution. The geom_violin() method in R is used to construct a violin plot in the working space which understands various aesthetic mappings, like alpha, color or fill.
Syntax:
geom_violin()
To construct a regular violin plot simply call the geom_violin() function after the visualization.
Example: A regular violin plot.
R
library("ggplot2")# defining the columns of the data framedata_frame <- data.frame(col1=c(rep("A", 10) , rep("B", 12) , rep("C", 18)), col2=c( sample(2:5, 10 , replace=T) , sample(4:10, 12 , replace=T), sample(1:7, 18 , replace=T)))# plotting the data frameggplot(data_frame, aes(x = col1, y = col2, fill = col1)) + # adding violin plot geom_violin() |
Output:
Violinplot with Data Points in R
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