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ggpolar: Dots and Their Connections in Polar Coordinate System

ggpolar status badge CRAN status

{ggpolar} provides a very flexible way to create dots in coordinate system for event list and connect the dots with segments based on {ggplot2}.

Installation

You can install the released version of {ggpolar} from CRAN with:

install.packages("ggpolar")

You can install the development version of {ggpolar} from GitHub with:

remotes::install_github("ShixiangWang/polar")

Example

Init a polar plot

library(ggpolar) #> Loading required package: ggplot2 data <- data.frame(x = LETTERS[1:7]) p1 <- polar_init(data, x = x) p1

# Set aes value p2 <- polar_init(data, x = x, size = 3, color = "red", alpha = 0.5) p2

# Set aes mapping set.seed(123L) data1 <- data.frame( x = LETTERS[1:7], shape = c("r", "r", "r", "b", "b", "b", "b"), color = c("r", "r", "r", "b", "b", "b", "b"), size = abs(rnorm(7)) ) # Check https://ggplot2.tidyverse.org/reference/geom_point.html # for how to use both stroke and color p3 <- polar_init(data1, x = x, aes(size = size, color = color, shape = shape), alpha = 0.5) p3

Connect polar dots

data2 <- data.frame( x1 = LETTERS[1:7], x2 = c("B", "C", "D", "E", "C", "A", "C"), color = c("r", "r", "r", "b", "b", "b", "b") ) p4 <- p3 + polar_connect(data2, x1, x2) p4

# Unlike polar_init, mappings don't need to be included in aes() p5 <- p3 + polar_connect(data2, x1, x2, color = color, alpha = 0.8, linetype = 2) p5

# Use two different color scales if (requireNamespace("ggnewscale")) { library(ggnewscale) p6 = p3 + new_scale("color") + polar_connect(data2, x1, x2, color = color, alpha = 0.8, linetype = 2) print(p6 + scale_color_brewer()) print(p6 + scale_color_manual(values = c("darkgreen", "magenta"))) } #> Loading required namespace: ggnewscale #> Warning: package 'ggnewscale' was built under R version 4.2.1

Citation

If you use {ggpolar} in academic research, please cite the following paper along with the GitHub repo.

Antigen presentation and tumor immunogenicity in cancer immunotherapy response prediction, eLife. https://doi.org/10.7554/eLife.49020.

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polar: Dots and Their Connections in Polar Coordinate System

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