All Questions
Tagged with r-leaflet javascript
28
questions
1
vote
1
answer
25
views
How to assign a leaflet layer to a group, when that layer is created by an extension of leaflet?
This R code creates a leaflet map with two base layers. The user can toggle between the two layers.
leaflet() |>
addTiles(group = "group 1") |>
addProviderTiles(provider = ...
- 1,676
1
vote
1
answer
23
views
How to add markers in a Leaflet minimap?
I have created an application in Shiny which allows for selecting a place and then displays a datatable with information and a marker at the corresponding position in the map. The marker is set in ...
- 97
0
votes
0
answers
37
views
Ho to make markers have different colors based on specific variable in R using leaflet?
What I want:
I want to make markers appear with different colors
my map
will have radio button to control (show/hide) markers by variable
'color_status'
match color scale to the color of the markers -...
0
votes
1
answer
77
views
How to Dynamically Add Markers to a Leaflet Map in Shiny App Using JavaScript?
I'm working on a Shiny application that includes a Leaflet map. I want to dynamically add markers to the map based on user input, but I'm encountering issues when trying to add these markers using ...
- 309
10
votes
1
answer
544
views
Load Quarto html map data from json for Leaflet map generated in R
I have created a Quarto blog post which contains many leaflet maps, generated in R. As the data for each map is embedded within the html file, the file itself is very large. This is causing problems ...
- 16.7k
0
votes
0
answers
189
views
Toggle Legends in leaflet map generated in R based on base layer selected
I have created a polygonal choropleth map in leaflet that toggles different geometries and legends on the regional and county (parish) level. The code works, but I made the addLayersControl toggle on ...
0
votes
1
answer
313
views
How to make leaflet markers fit within sf polygons for any zoom level?
How can I dynamically size leaflet markers to fit within sf polygons for any zoom level?
I have a series of sf polygons similiar to the nc (North Carolina) example below. Each of these polygons has ...
- 26
1
vote
1
answer
651
views
Save click coordinates
I have a Shiny app where the goal is to send the user's location to a database. The app automatically detects the user's location, and assigns that to input$lat and input$long. The app also has a ...
- 216
1
vote
1
answer
368
views
How to query a Web Map Service layer with a fake click?
I'm trying to display the information tooltip of a queryable WMS (Web Map Service) layer in a leaflet in Shiny. I need it to be performed in 2 different ways: 1/ clicking 2/ typing in coordinates.
...
- 107
1
vote
1
answer
251
views
How to prevent BringToBack from reversing layers order of FeatureGroup in Leaflet
I have a Leaflet Map on a Shiny web-app. I have 3 Base Groups containing different circles, and 1 Overlay Group containing polylines crossing each other. The polylines are sorted so that the more ...
- 13
3
votes
1
answer
1k
views
Adding a 'click' event to leaflet polygons via R
How can I add a mouse 'click' event to each polygon plotted on a leaflet map? I want to do this so I can then filter a separate widget based on data from the features (in this case WD21CD).
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...
- 1,503
2
votes
1
answer
1k
views
Programatically trigger marker mouse click event in R leaflet for shiny
My question is identical to this one: Trigger marker mouse click event in R leaflet for shiny but I don't have enough rep to add a comment, and the edit queue is 'full' so I can't add my thoughts to ...
- 83
6
votes
1
answer
321
views
R & Leaflet: how to bind a client-side event to a polygon
Here is a simple shiny app:
library(shiny)
library(leaflet)
nc = sf::st_read(system.file("shape/nc.shp", package="sf"))
ui <- function(request){
tagList(
selectInput(&...
- 5,069
7
votes
2
answers
1k
views
Pie charts in R leaflet, turn count into sum and control more the size
I am fascinated by the solution of grouping markers and presenting counts by groups in form of small piecharts https://stackoverflow.com/a/60525137/3480717
I am R only and do not know JS. I would like ...
- 674
0
votes
3
answers
1k
views
leaflet-groupedlayercontrol using group layers in R
I am interested in using leaflet-groupedlayercontrol within an Leaflet map created in R and have been following this gist. I can successfully add the JS plugin (as in this working example below), but ...
- 1,112