i.map: Map of international collaboration.

Description

Generates a network of international collaboration.

Usage

i.map(
  biblio,
  homeCountry = NULL,
  ext = c(-180, 180, -55, 90),
  sea.col = "white",
  country.col = "grey",
  country.border.col = "black",
  country.border.tick = 0.3,
  line.curvature = 0.1,
  line.size = 0.8,
  line.alpha = 0.4,
  line.color = "black",
  country.point.color = "white",
  country.point.line = "black",
  country.point.alpha = 0.8,
  country.size.proportional = FALSE,
  country.point.size = 1,
  homeCountry.point.color = "darkgrey",
  homeCountry.point.line = "black",
  homeCountry.point.alpha = 0.8,
  homeCountry.point.size = 5
)

Value

A map with the network of collaborations.

Arguments

biblio: A data.frame exported from Web of Science as tab delimited text, full record OR a vector with country frequencies where names are the country names.
homeCountry: A character string specifying the country of origin of the researcher. Look at map$country for the complete list. If NULL, the country with most hits in Web of Science is used.
ext: extent of the bounding box of the map in decimal degrees (minX, maxX, minY, maxY).
sea.col: A character indicating the color of the sea.
country.col: A character indicating the color of the countries in the world.
country.border.col: A character indicating the color of the border among countries.
country.border.tick: An integer value defining the size of the border line among countries.
line.curvature: An integer value defining the curvature of the line connecting the home country with the countries of collaborators.
line.size: An integer value defining the size of the line connecting the home country with the countries of collaborators.
line.alpha: An integer value defining the transparency of the line connecting the home country with the countries of collaborators.
line.color: A character indicating the color of the line connecting the home country with the countries of collaborators.
country.point.color: A character indicating the color of the vertex representing each country.
country.point.line: A character indicating the color of line of the vertex representing each country.
country.point.alpha: An integer value defining the transparency of the vertex representing each country.
country.size.proportional: Logical. If TRUE, the size of each country is proportional to the number of collaborations.
country.point.size: An integer value defining the size of vertex representing each country. Ignored if country.size.proportional = TRUE.
homeCountry.point.color: A character indicating the color of the vertex representing the home country.
homeCountry.point.line: A character indicating the color of the line of the vertex representing the home country.
homeCountry.point.alpha: An integer value defining the transparency of the vertex representing the home country.
homeCountry.point.size: An integer value defining the size of vertex representing the home country.

Details

The network connects the researcher with all their collaborators.

Examples

Run this code

data(biblio)
i.map(biblio, country.size.proportional = TRUE)

biblio = c(5, 3, 2, 1)
names(biblio) = c("Finland", "Portugal", "Brazil", "Italy")
i.map(biblio)

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