vmap: Create a Map

In vchartr: Interactive Charts with the 'JavaScript' 'VChart' Library

Create a Map

Description

Create a Map

Usage

vmap(
  data,
  mapping = NULL,
  ...,
  projection = NULL,
  width = NULL,
  height = NULL,
  elementId = NULL
)

Arguments

data	An sf object.
mapping	efault list of aesthetic mappings to use for map.
...	Configuration options for the map.
projection	Geographical mapping type. See online documentation for the various possible choices.
width	Fixed width for widget (in css units). The default is NULL, which results in intelligent automatic sizing based on the widget's container.
height	Fixed height for widget (in css units). The default is NULL, which results in intelligent automatic sizing based on the widget's container.
elementId	Use an explicit element ID for the widget (rather than an automatically generated one). Useful if you have other JavaScript that needs to explicitly discover and interact with a specific widget instance.

Value

A vmap() htmlwidget object.

Examples

if (rlang::is_installed(c("sf", "geojsonio"))) {
  
  library(vchartr)
  library(sf)
  
  # Create map from sf object
  vmap(co2_world)
  
  # Draw data on the map
  vmap(co2_world, aes(name = name, fill = co2_per_capita))
  
  # Change projection and colors
  vmap(
    co2_world,
    aes(name = name, fill = co2_per_capita), 
    projection = "equalEarth"
  ) %>% 
    v_specs_colors(
      range = c(
        "#FFFFE5", "#FFF7BC", "#FEE391", 
        "#FEC44F", "#FE9929", "#EC7014", 
        "#CC4C02", "#993404", "#662506"
      )
    ) %>% 
    v_specs_legend(
      orient = "bottom",
      type = "color",
      field = "fill"
    )
  
  # Map discrete data
  vmap(
    co2_world[!is.na(co2_world$co2_per_capita), ], 
    aes(
      name = name,
      fill = ifelse(co2_per_capita >= 2.3, "Above", "Under")
    )
  ) %>% 
    v_specs(
      area = list(
        style = list(
          stroke = "#FFFFFF"
        )
      )
    )
  
}

vchartr documentation built on April 12, 2025, 1:51 a.m.