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Questions tagged [r-leaflet]

This R package makes it easy to integrate and control the open-source JavaScript Leaflet software in R.

499 questions
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Leaflet equivalent of geom_segments xend, yend arguments

I would like to ask is there a way how to set xend and yend from geom_segment arguments in leaflet`s addPolylines function? insted of explaining I rather provide reproduceble example since it is mut easire to see rather than…
Petr
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Using checkboxGroupInput for interactive Shiny map

I'm trying to filter markers on a map by using the Check Box Group Input. titlePanel("Toronto Auto Thefts"), leafletOutput ("map", width = "100%", height = "100%"), absolutePanel( checkboxGroupInput("checkGroup", h3("Week…
softsoap
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st_geometry' applied to an object of class "character"

I've put together a script that filters a bunch of things. But whenever I run it I get this error: st_geometry' applied to an object of class "character" What's bizarre is if I run it outside of my shiny app, like this, it works fine: mapView(nv %>%…
user12061051
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Collapsing four data frame columns into two, interleaved columns

I am using latitude and longitude data to draw lines on a leaflet map (see below). Ideally the lines would be stored in lat and lng columns in a data frame. In the lat column, each starting point lat value would be followed by an ending point lat…
SlowLearner
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leaflet needs projection for displaying raster

I am trying to create a shiny app that displays raster over a world map. The user will interact with the inputs and the app will generate a raster as well as histogram. The code below generates the histogram but not the map and I wanted help in…
89_Simple
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Is there a function in R Studio to create an interactive map using NYC zip codes?

I have a dataset that has NYC Zip codes, and in a different dataset, I have lat and long codes. I am aware that I can use Leaflet to create an interactive but when I try run it on the 167K rows of data, R Studio freezes and struggles to load the…
Carl O'Beirne
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leaflet + shiny: "argument is of length zero" in addLegend values

I'm developing a shiny app to show a choropleth map, using leaflet and a shapefile to add the polygons. Outside shiny everything works fine, but with shiny I got a problem when using addLegend as follows: mypal <- reactive({ colorBin(palette…
cassianord
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R - Leaflet map isn't loading in RStudio or Rshiny App - Proxy Authentication Problem

This is my code: map <- mapLeaflet <- leaflet() %>% addTiles() And this is the error: Failed to load resource: the server responded with a status of 407 (Proxy Authentication Required) This is how the map appears:
Jole
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R Shiny dashboard with leaflet maps: image query functionality on my second tab doesn't work

I have an R Shiny dashboard with 2 tabs. Each tab displays a raster. Image query works on the first tab, but not on the second. On the second tab it shows a small empty space where the queried data should be displayed, but no values. If I remove the…
Rainfall.NZ
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Polygon background in leaflet

Is there a way (better in R not to download any additional datasets) how to make polygon (or more visible country borders) in leaflet Using simple code m = leaflet() %>% addProviderTiles("CartoDB.Positron") %>% addCircles(lat=15,lng=18, radius =…
Thomas Kyle
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Calculating a new lat/long co-ordinate by adding a distance to a starting co-ordinate?

I have an ascii grid of elevation data in 100M cells. I have a lat/long for a starting point and I need to add up these 100m increments and get new lat/long co-ordinate to draw a colored box around. Im using R and leaflet to draw a map with the…
Lawrence
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Setting color palettes with different "parent" levels?

I'm trying to color in a map with the leaflet package using data that looks as such: +--------+---------+-------+ | region | terrain | sales | +--------+---------+-------+ | 1 | 1A | 253 | | 1 | 1B | 280 | | 1 | 1C …
user9302275
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Link to image in popup (R leaflet)

I used the code mentioned in other topics here: link <- c("https://lh4.googleusercontent.com/4okYLMcxk2ZjRqWwSwU8WkEcRQA4NRYxYrlZjieGCace9oNl2DYC78-ZsfIUxu2GKh2_SoPOWluXll2Sl5P0uJxCDPFW_uzQqsW_oHOQ9ept44Ex87I0yw_5EhD6nR1aIRiM") addCircleMarkers(lng…
Maksym Matsala
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How to use shiny range slider to filter points on leaflet point map

I'm trying to use shiny and leaflet to filter the points on a point map on/off depending on the value of a numeric variable ('Population') I load libraries and data #load libraries library(shiny) library(leaflet) #create fake data fake_data <-…
RHinks
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Create icons from standard barplot (or ggplot2 geom_col) with single bar

I want to create png icons with single bar (from standard barplot or ggplot2 geom_col). Icons will be presented on leaflet map. There is data.frame: lat,lon,val. Parameter "val" is used to set height of bar (only one bar on one icon). Icons must…
Big Z
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