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ggsky

ggsky is an extension for ggplot2 to draw sky maps with:

• galactic coordinates (coord_galactic())
• equatorial coordinates (coord_equatorial())

It includes custom coordinate systems and helper scales for longitude/latitude labels.

Installation

From GitHub:

remotes::install_github("uskovgs/ggsky")

Quick examples

  library(ggplot2)
  library(ggsky)

  N <- 100
  df1 <- data.frame(
    x = runif(N, 0, 360),
    y = runif(N, -90, 90)
  )

  ggplot(df1, aes(x, y)) +
    geom_point() +
    coord_galactic() +
    labs(title = "Galactic coordinate system")

  ggplot(df1, aes(x, y)) +
    geom_point() +
    labs(title = "Equatorial coordinate system") +
    coord_equatorial()

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.