All Questions
1,851
questions
1
vote
1
answer
194
views
Custom legend order in R leaflet
I created a leaflet map and now need to customize the order of the legend. By default leaflet alphabetizes the legend order. In the example below, I need the legend order to be (from top to bottom): ...
- 19k
0
votes
2
answers
1k
views
R Leaflet Limitations? Too much data?
I found a workaround for this that actually worked better for the project I was working on, but I'm still curious.
I was creating some maps in R using the leaflet package. The code ran well, but I ...
0
votes
1
answer
61
views
Change leaflet marker fill color by group
In the example below, I have cities located on a leaflet map. I would like the fill color to be yellow for cities in Virginia and green for cities in North Carolina. How can I set the fill colors of ...
0
votes
1
answer
597
views
Multiple layers on TMAP
I have a dataframe looking like this:
dataframe
Id is the zip code and the columns go from 2015 to 2019.
Link to download the database (with the .shp file needed to execute this program)
library(...
0
votes
0
answers
50
views
Is there any way to expand polygon objects, just to make them touch each other graphically?
I created these shape objects through K-Means clustering but I want them to have touching borders without doing anything too manual. Any assistance would be great. Working with crime data and it doesn'...
- 7,992
0
votes
1
answer
60
views
Can leaflet layer controls be used to alter popup contents in a Shiny dashboard?
I am building a dashboard in R Shiny that includes a map rendered using R leaflet. There are popups associated with locations on the map and items in the popup are also used as layer controls. i.e., ...
- 55
0
votes
1
answer
55
views
Leaflet proxy in r only shows latest added Layer
I want to visualise the development of fatal traffic accidents and accidents with severe injuries on state and community level in a leaflet map.
As a solution i use a shiny app with a radio button for ...
- 47
1
vote
2
answers
227
views
How to make small polygons from shapefile and extract coordinates
I have a small shapefile here: https://login.filesanywhere.com/fs/v.aspx?v=8c6d62865c626fb4a2ab called bay.RDS
library(tmap)
library(leaflet)
library(mapview)
bay <- readRDS('bay.RDS')
mapview(...
- 2,153
0
votes
0
answers
87
views
Multipage flexdashboard leaflet map issues
I have created a multipage flexdashboard app (.Rmd) in R using shiny runtime. One of the pages is a leaflet map with a large polygon layer. The map initially draws as it should but after I browse ...
- 95
0
votes
1
answer
80
views
How to set an anchor and create polygons from shapefile
I am following up on the example here: How to make small polygons from shapefile and extract coordinates
I am trying to adapt that example to a different shapefile but I am getting errors. The new ...
- 14k
0
votes
1
answer
267
views
In R, how do I create a spatial grid using Leaflet and SF that is color coded based on some variable
I am working with some state in the United States. I have latitude and longitude data (comprising two different columns) and I have a third column, let's call it L1, containing a value from 1-10. I ...
- 815
0
votes
0
answers
92
views
WMS from password protected portal not loading in Leaflet on R - works fine in QGIS
After creating a few WMS, I have tried loading them in R to display them on a map but sadly the leaflet map doesn't show them - only the backdrop does. I had no issue displaying them in QGIS with ...
- 1
3
votes
2
answers
2k
views
How to change NA values to NULL in a leaflet choropleth map?
I am trying to map a categorical variable that has NA values. I would like the NA values to appear as transparent on the map but they seem to show up as black.
library(sf)
library(leaflet)
library(...
- 380
0
votes
1
answer
48
views
R Leaflet layer control fails when using clusterOptions
Layers control in this map work well:
library(leaflet)
mini_quakes <- head(quakes, 10)
mini_quakes$stations <- as.character(mini_quakes$stations)
leaflet(mini_quakes) %>% addTiles() %>%
...
- 450
1
vote
1
answer
572
views
Leaflet in R - Highlight Polygon on Click
Using the leaflet package in R, I'm looking to highlight / change fillColor of polygon upon click instead of hover.
This is in a Shiny app, so I have access to the reactive values, and knowledge of ...
- 27.7k