Change color of leaflet marker

Question

Is there anyway to change the color of leaflet marker base on the value of some variable. In the following map, for example, I wish to assign marker color based on mag varia

Answer 1

This one worked for me:

Source: https://github.com/bhaskarvk/leaflet/blob/master/inst/examples/awesomeMarkers.R

library(leaflet)

icon.glyphicon <- makeAwesomeIcon(icon= 'flag', markerColor = 'blue', iconColor = 'black')
icon.fa <- makeAwesomeIcon(icon = 'flag', markerColor = 'red', library='fa', iconColor = 'black')
icon.ion <- makeAwesomeIcon(icon = 'home', markerColor = 'green', library='ion')

# Marker + Label
leaflet() %>% addTiles() %>%
  addAwesomeMarkers(
    lng=-118.456554, lat=34.078039,
    label='This is a label',
    icon = icon.glyphicon)

leaflet() %>% addTiles() %>%
  addAwesomeMarkers(
    lng=-118.456554, lat=34.078039,
    label='This is a label',
    icon = icon.fa)

leaflet() %>% addTiles() %>%
  addAwesomeMarkers(
    lng=-118.456554, lat=34.078039,
    label='This is a label',
    icon = icon.ion)

# Marker + Static Label using custom label options
leaflet() %>% addTiles() %>%
  addAwesomeMarkers(
    lng=-118.456554, lat=34.078039,
    label='This is a static label',
    labelOptions = labelOptions(noHide = T),
    icon = icon.fa)