r-leaflet

问题 I would like to open a popup with a unique plot for each of my marker in it on a map_marker_click using r leaflet and the leafpop library. For each point when the user click on them the plot to display is computed. Below is a reproductible code but it doesn't return any error. Any ideas? library(tidyverse) library(ggplot2) library(shiny) library(leaflet) library(leafpop) id <- c(1,1,1,1,2,2,3,3,3,4) lat <- c(49.823, 49.823, 49.823, 49.823, 58.478, 58.478, 57.478 , 57.478 , 57.478, 38.551) lng

问题 I would like to open a popup with a unique plot for each of my marker in it on a map_marker_click using r leaflet and the leafpop library. For each point when the user click on them the plot to display is computed. Below is a reproductible code but it doesn't return any error. Any ideas? library(tidyverse) library(ggplot2) library(shiny) library(leaflet) library(leafpop) id <- c(1,1,1,1,2,2,3,3,3,4) lat <- c(49.823, 49.823, 49.823, 49.823, 58.478, 58.478, 57.478 , 57.478 , 57.478, 38.551) lng

问题 Using Shiny, leaflet, and mapedit packages I can generate a graph with multiple series using the code below. Intuitively I would like to click on a selected map icon a second time and the associated data is removed from the graph. Essentially the click event can be toggled on or off. Does anyone have any suggestions? # devtools::install_github("r-spatial/sf") # devtools::install_github("r-spatial/mapview@develop") # devtools::install_github("bhaskarvk/leaflet.extras") # devtools::install

问题 With mapedit it is possible to clear drawn features using the 'trash' icon built into the drawbar UI. It is also possible to clear features associated with the leaflet map using clearMarkers() and leafletProxy() , as laid out in this issue. However, leafletProxy does not clear any features drawn by the user. How do I programmatically clear these features? (e.g. after clicking an actionButton). Here is a simple shiny app and more explanation: library(mapedit) library(mapview) library(shiny) ui

问题 With mapedit it is possible to clear drawn features using the 'trash' icon built into the drawbar UI. It is also possible to clear features associated with the leaflet map using clearMarkers() and leafletProxy() , as laid out in this issue. However, leafletProxy does not clear any features drawn by the user. How do I programmatically clear these features? (e.g. after clicking an actionButton). Here is a simple shiny app and more explanation: library(mapedit) library(mapview) library(shiny) ui

问题 I would like to create a leaflet map where you can select multiple polygons and this will update the selectizeInput() in a shiny app. This would including removing a selected polygon, when it is removed in the selectizeInput() . I have slightly changed/updated the code from the answer here (use of sf instead of sp and more dplyr where I could work out what the base R was). The polygons could probably be updated with an observeEvent tied in with input$clicked_locations , but not sure exactly

问题 I would like to create a leaflet map where you can select multiple polygons and this will update the selectizeInput() in a shiny app. This would including removing a selected polygon, when it is removed in the selectizeInput() . I have slightly changed/updated the code from the answer here (use of sf instead of sp and more dplyr where I could work out what the base R was). The polygons could probably be updated with an observeEvent tied in with input$clicked_locations , but not sure exactly

问题 I am trying to map ~8000 polygons using leaflet and run into performance issues. As I am using the map within a shiny app, I was wondering if its possible to somehow cache or pre-render the map. Note that in my case, I have different layers of polygons that are swapped following this approach. A small MWE would be this: The data can be downloaded from here library(shiny) library(leaflet) library(sf) ## Download Shapefile file <- "plz-gebiete.shp" if (!file.exists(file)) { url <- "https://www

问题 I am trying to map ~8000 polygons using leaflet and run into performance issues. As I am using the map within a shiny app, I was wondering if its possible to somehow cache or pre-render the map. Note that in my case, I have different layers of polygons that are swapped following this approach. A small MWE would be this: The data can be downloaded from here library(shiny) library(leaflet) library(sf) ## Download Shapefile file <- "plz-gebiete.shp" if (!file.exists(file)) { url <- "https://www

问题 I am trying to map ~8000 polygons using leaflet and run into performance issues. As I am using the map within a shiny app, I was wondering if its possible to somehow cache or pre-render the map. Note that in my case, I have different layers of polygons that are swapped following this approach. A small MWE would be this: The data can be downloaded from here library(shiny) library(leaflet) library(sf) ## Download Shapefile file <- "plz-gebiete.shp" if (!file.exists(file)) { url <- "https://www