"ggtern" Ternary plot gridlines and axis ticks needed

Question

I am trying to add gridlines and axis ticks to the ternary plot. I was able to adjust the numeric values of the axis, but unable to get axis ticks and grids inside the plot.

Here is an example R code:

library(ggplot2)
# Example data
x <- rnorm(100)
y <- rnorm(100)
z<-rnorm(100)
df <- data.frame(x, y, z)

# Create scatter plot with grid lines
ggtern(df, aes(x, y, z)) +
  geom_point() +
  theme_showgrid()+
  theme(panel.grid.major = element_line(color = "grey", linetype = "dashed"),
  panel.grid.minor = element_line(color = "grey", linetype = "dashed"))

I am getting this

I want this

Answer 1

You could use an older version 3.3.5 from ggplot2 and use theme_bw like this:

library(remotes)
install_version("ggplot2", version = "3.3.5", repos = "http://cran.us.r-project.org")
#> Downloading package from url: http://cran.us.r-project.org/src/contrib/Archive/ggplot2/ggplot2_3.3.5.tar.gz
library(ggplot2)
library(ggtern)

# Example data
x <- rnorm(100)
y <- rnorm(100)
z<-rnorm(100)
df <- data.frame(x, y, z)

# Create scatter plot with grid lines
ggtern(df, aes(x, y, z)) +
  geom_point() +
  theme_bw()

^{Created on 2023-03-11 with reprex v2.0.2}

Answer 2

This script worked

library(remotes)

install_version("ggplot2", version = "3.3.5", repos = "http://cran.us.r-project.org")
#> Downloading package from url: http://cran.us.r-project.org/src/contrib/Archive/ggplot2/ggplot2_3.3.5.tar.gz
library(ggplot2)

install_version("ggtern", version = "3.3.5", repos = "http://cran.us.r-project.org")
library(ggtern)

# Example data
x <- rnorm(100)
y <- rnorm(100)
z<-rnorm(100)
df <- data.frame(x, y, z)

# Create scatter plot with grid lines
ggtern(df, aes(x, y, z)) +
  geom_point() +
  theme_bw()+theme_showgrid()