how can i draw a point density

[hanhuihong]

Hi @All.
I get problem when using ggplot2 to draw a point geom adding a density on it like below:

how can i draw the plot like above picture.
can anyone help me ?

[jrkrideau]

Can you supply some data and code to show us what you have tried so far?

FAQ: How to do a minimal reproducible example ( reprex ) for beginners

A minimal reproducible example consists of the following items: A minimal dataset, necessary to reproduce the issue The minimal runnable code necessary to reproduce the issue, which can be run on the given dataset, and including the necessary information on the used packages. Let's quickly go over each one of these with examples: Minimal Dataset (Sample Data) You need to provide a data frame that is small enough to be (reasonably) pasted on a post, but big enough to reproduce your issue. Let's say, as an example, that you are working with the iris data frame head(iris) #> Sepal.Length Sepal.Width Petal.Length Petal.Width Species #> 1 5.1 3.5 1.4 0.…

[strengejacke]

The plot looks like a normal scatter plot, with some transparency (alpha) for the dot-geoms. Here are two possible solutions:

library(ggplot2)
library(dplyr)
data("diamonds")
diamonds <- filter(diamonds, x > 3 & x < 12, y > 5 & y < 12, z > 3 & z < 5)

ggplot(diamonds, aes(x, z)) + geom_point(alpha = .01, shape = 16)

ggplot(diamonds, aes(x, z)) + geom_density_2d_filled()

^{Created on 2020-11-02 by the reprex package (v0.3.0)}