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.
tmap_icons(
file,
names = NULL,
width = 48,
height = 48,
keep.asp = TRUE,
just = c("center", "center"),
merge = NA,
as.local = TRUE,
...
)marker_icon()
icon data (see leaflet::icons())
character value/vector containing the file path(s) or url(s).
names to be given to the icons. Useful when icons are assigned to factor levels.
width of the icon. If keep.asp, this is interpreted as the maximum width.
height of the icon. If keep.asp, this is interpreted as the maximum height.
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.
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 icons to one icon list (see return value)? If FALSE, a list is created per file. By default TRUE, unless names are specified.
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.
tm_symbols()