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How to increase the size of points on a scatterplot if the points are drawn based on another sequence using ggplot2 in R?
When we draw a scatterplot using ggplot2 with points based on a sequence of values then the size of the points might be very small for the small values. As a result, it becomes a little difficult to view the points. Therefore, we might want to increase the size of those points. It can be done by using scale_size_continuous function in which we can set a range for the points size.
Example
Consider the below data frame −
x<-rnorm(10,1) y<-rnorm(10,2) Pair<-1:10 df<-data.frame(x,y,Pair) df
Output
x y Pair 1 0.2722750 0.7855144 1 2 0.6708724 2.8385502 2 3 1.6939261 1.7415868 3 4 0.5773440 2.1596557 4 5 0.1965571 0.7356820 5 6 0.3368027 1.4774414 6 7 0.8248820 2.8211750 7 8 -0.3364834 2.5258274 8 9 -0.3229903 1.1579749 9 10 -1.1594988 1.0636472 10
Loading ggplot2 package and creating a scatterplot with points size based on Pair column −
Example
library(ggplot2) ggplot(df,aes(x,y,size=Pair))+geom_point()
Output
Creating the scatterplot with a range of point size −
Example
ggplot(df,aes(x,y,size=Pair))+geom_point()+scale_size_continuous(range = c(2,5))
Output
Updated on 08-Sep-2020 13:04:56
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