Specify icons

Specifies icons from a png images, which can be used as markers in thematic maps. The function marker_icon() is the specification of the default marker.

Usage

tmap_icons(
  file,
  names = NULL,
  width = 48,
  height = 48,
  keep.asp = TRUE,
  just = c("center", "center"),
  merge = NA,
  as.local = TRUE,
  ...
)

marker_icon()

Arguments

file: character value/vector containing the file path(s) or url(s).
names: names to be given to the icons. Useful when icons are assigned to factor levels.
width: width of the icon. If keep.asp, this is interpreted as the maximum width.
height: height of the icon. If keep.asp, this is interpreted as the maximum height.
keep.asp: keep the aspect ratio of the png image. If TRUE and the aspect ratio differs from width/height, either width or height is adjusted accordingly.
just: justification of the icons relative to the point coordinates. The first value specifies horizontal and the second value vertical justification. Possible values are: "left" , "right", "center", "bottom", and "top". Numeric values of 0 specify left alignment and 1 right alignment. The default value of just is c("center", "center").
merge: merge icons to one icon list (see return value)? If FALSE, a list is created per file. By default TRUE, unless names are specified.
as.local: if the file is a url, should it be saved to local temporary file?
...: arguments passed on to leaflet::icons(). When iconWidth, iconHeight, iconAnchorX, and iconAnchorY are specified, they override width and height, and just.

Value

icon data (see leaflet::icons())

Usage

Arguments

Value

See also