customising-map-appearance.R
In Racmacs: Antigenic Cartography Macros

## ----include = FALSE----------------------------------------------------------
knitr::opts_chunk$set(
  collapse = TRUE,
  comment = "#>"
)

## -----------------------------------------------------------------------------
library(Racmacs)
map <- read.acmap(system.file("extdata/h3map2004.ace", package = "Racmacs"))

# Rotate the map
map <- rotateMap(map, 210)

# Colour all the antigens grey
agFill(map) <- "grey50"

# Colour all the vaccine antigens in red and increase their size
vaccine_strains <- c(
  "PC/1/73",
  "VI/3/75",
  "TE/1/77",
  "BA/1/79",
  "PH/2/82",
  "LE/360/86",
  "SH/11/87",
  "SI/2/87",
  "BE/353/89",
  "GU/54/89",
  "BE/32/92",
  "SD/9/93",
  "JO/33/94",
  "WU/359/95",
  "SY/5/97",
  "MW/10/99",
  "FU/411/02"
)

vaccine_ags <- agNames(map) %in% vaccine_strains
agFill(map)[vaccine_ags] <- "red"
agSize(map)[vaccine_ags] <- 8

# Bring the antigens to the top of the plot
ptDrawingOrder(map) <- c(
  seq_len(numSera(map)) + numAntigens(map), # Draw sera first
  which(!vaccine_ags),                      # Then draw non vaccine ags
  which(vaccine_ags)                        # The draw vaccine ags
)
  
# Plot the map
plot(map)