问题描述
我正在尝试创建一个 Rmarkdown 报告,其中会有一个下拉列表和一个地图。 The dropdown should filter the map when a value is selected,but for some reason it doesn't work.任何帮助表示赞赏:
---
title: "test"
output:
flexdashboard::flex_dashboard:
orientation: rows
---
library(dplyr)
library(leaflet)
library(crosstalk)
library(flexdashboard)
library(sf)
library(sp)
dt <- data.frame(ab = c(1,1,2,2),lon = c(1,3,4),lat = c(5,4,2)) %>%
st_as_sf(coords = c("lon","lat"),crs = 4326) %>%
group_by(ab) %>%
summarise(do_union = F) %>%
st_cast("LInesTRING")
sd <- SharedData$new(dt)
filter_select("ab","AB text",sd,~ ab)
leaflet(data = sd) %>%
addTiles() %>%
addpolylines(color = "#D2691E")
解决方法
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