addLogo: add a local or remote image (png, jpg, gif, bmp, ...) to a...

Description Usage Arguments Examples

View source: R/logo.R

Description

This function adds an image to a map. Both local and remote (web) image sources are supported. Position on the map is completely controllable.

Usage

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(
  map,
  img,
  alpha = 1,
  src = c("remote", "local"),
  url,
  position = c("topleft", "topright", "bottomleft", "bottomright"),
  offset.x = 50,
  offset.y = 13,
  width = 60,
  height = 60
)

Arguments

map

a mapview or leaflet object.

img

the image to be added to the map.

alpha

opacity of the added image.

src

character specifying the source location ("local" for images from the disk, "remote" for web image sources).

url

an optional URL to be opened when clicking on the image (e.g. company's homepage).

position

one of "topleft", "topright", "bottomleft", "bottomright".

offset.x

the offset in x direction from the chosen position (in pixels).

offset.y

the offset in y direction from the chosen position (in pixels).

width

width of the rendered image in pixels.

height

height of the rendered image in pixels.

Examples

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library(leaflet)
## default position is topleft next to zoom control

img <- "https://www.r-project.org/logo/Rlogo.svg"
leaflet() %>% addTiles() %>% (img, url = "https://www.r-project.org/logo/")

## with local image
if (requireNamespace("png")) {
  library(png)

  img <- system.file("img", "Rlogo.png", package="png")
  leaflet() %>% addTiles() %>% (img, src = "local", alpha = 0.3)

  ## dancing banana gif :-)
  m <- leaflet() %>%
    addTiles() %>%
    addCircleMarkers(data = breweries91)

  (m, "https://jeroenooms.github.io/images/banana.gif",
          position = "bottomleft",
          offset.x = 5,
          offset.y = 40,
          width = 100,
          height = 100)
}

leafem documentation built on July 26, 2020, 5:06 p.m.