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Published
20 hours ago •
rstudio
rstudio
markerClusters do not draw unless there are tiles added to the map.
I have a leaflet map with no tiles (just polygons) that shows AwesomeMarkers appropriately, but when I add clusterOptions = markerClusterOptions to the arguments, none of the markers are displayed.
It appears that if tiles are added before adding the markers, the cluster option works.
dat <- structure(list(lat = c(34.6525609, 34.8323176, 34.623637, 40.436154,
40.7253178, 41.5696682, 41.5965959, 41.6237623, 41.6277843, 41.6610833
), lng = c(-87.1206101, -87.1905764, -87.0325887, -85.3813609,
-86.2186063, -70.6142768, -70.5854606, -70.5527536, -70.5209656,
-70.4868442), restrict_category = c("Limit", "Limit", "Ban",
"Limit", "Limit", "Ban", "Ban", "Ban", "Ban", "Ban")), row.names = c(NA,
-10L), class = c("tbl_df", "tbl", "data.frame"))
sf_states <- states(cb = T) %>%
rename(state = NAME) %>%
shift_geometry(geoid_column = "GEOID") %>%
st_transform("EPSG:4326") %>%
filter(STATEFP < 60)
leaflet(dat) %>%
addPolygons(data = sf_states, weight = 2, color = "#000000", opacity = 1, fillOpacity = 1,
fillColor = "white") %>%
addAwesomeMarkers()
Same code as above but with clusterOptions set:
leaflet(dat) %>%
addPolygons(data = sf_states, weight = 2, color = "#000000", opacity = 1, fillOpacity = 1,
fillColor = "white") %>%
addAwesomeMarkers(
clusterOptions = markerClusterOptions()
)
However, if tiles are added, the clusters are drawn appropriately:
leaflet(dat) %>%
addPolygons(data = sf_states, weight = 2, color = "#000000", opacity = 1, fillOpacity = 1,
fillColor = "white") %>%
addTiles() %>%
addAwesomeMarkers(
clusterOptions = markerClusterOptions()
)
─ Session info ────────────────────────────────────────────────────────────────────────────────────────
setting value
version R version 4.2.0 (2022-04-22)
os macOS Monterey 12.4
system x86_64, darwin17.0
ui RStudio
language (EN)
collate en_US.UTF-8
ctype en_US.UTF-8
tz America/Denver
date 2022-07-12
rstudio 2022.02.3+492 Prairie Trillium (desktop)
pandoc 2.17.1.1 @ /Applications/RStudio.app/Contents/MacOS/quarto/bin/ (via rmarkdown)
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