我用tmap创建的交互式地图确实显示在RStudio Viewer中,但是,如果我尝试将其包含在Shiny应用程序中,则不会出现。我使用了tmap_leaflet函数,renderLeaflet和leafletOutput。有人知道如何解决这个问题吗?
下面是我在Shiny应用程序中使用的示例代码:
library(shiny)
library(c(tmap,tmaptools,leaflet))
ui <- fluidPage(
leafletOutput("test"))
server <- function(input, output) {
output$test <- renderLeaflet({
# data is a shapefile with geometry properties and a mapping variable and facet variable.
tmap_mode("view")
map <- tm_shape(data) +
tm_polygons() +
tm_facets(by = "facet_variable",nrow = 2, ncol = 2) +
tm_shape(data) +
tm_fill(col = "mapping_variable",
legend.show = T,
colorNA = "grey",
palette = "Reds",n=9) +
tm_shape(data) +
tm_borders("white",alpha=.8, lwd=1.5) +
tm_layout(outer.margins = 0) +
tm_view(view.legend.position = c("left","bottom"))
tmap_leaflet(map,mode="view",show=T)
})
}
shinyApp(ui = ui, server = server)
答案 0 :(得分:1)
您可以使用tmap函数与以下代码一起绘制多面地图。 生成的地图如下所示:https://i.stack.imgur.com/9gmJf.jpg
library(tidyverse)
library(tmap)
library(tmaptools)
library(rgdal)
library(dplyr)
library(leaflet)
# Loading shape and select four largest cities in the Netherlands
country <- read_shape("/local_directory/wijk_2017.shp")
# Cleaning and preparing data
cities <- country %>%
filter(GM_CODE %in% c("GM0363","GM0599","GM0518","GM0344"),
!WK_CODE %in% c("WK036399","WK059999","WK051899","WK034499"))
cities <- cities %>%
mutate(WK_NAAM = as.character(WK_NAAM),
OPP_TOT = as.numeric(as.character(OPP_TOT)),
OPP_TOT = cut(OPP_TOT,breaks = c(-Inf,seq(500,2000,by=500),Inf)))
# Plotting facetted tmap of four largest cities in the Netherlands.
tmap_mode("view")
tm_shape(cities) +
tm_polygons() +
tm_facets(by = "GM_NAAM",
nrow = 2, ncol = 2) +
tm_shape(cities) +
tm_fill(col = "OPP_TOT",
legend.show = T,
colorNA = "grey",
title = "Total area per neighbourhood",
textNA = "No data",
palette = "Greens",n=5,
id = "WK_NAAM") +
tm_shape(cities) +
tm_borders("white",alpha=.8, lwd=1.5) +
tm_layout(outer.margins = 0) +
tm_view(view.legend.position = c("left","bottom"))
答案 1 :(得分:0)
使用一些虚拟数据,我可以看到地图。
我不确定是否可以加载这样的软件包:library(c(tmap,tmaptools,leaflet))
它给了我这个错误:
库中的错误(c(tmap,tmaptools,传单)):'package'muss Länge1 haben
我不认为有一个名为view.legend.position
的论点。仅尝试使用legend.position
。
我认为问题出在facets
上。 (下面的示例不使用它们)
library(shiny)
library(tmap)
library(tmaptools)
library(leaflet)
library(sp)
Sr1 = Polygon(cbind(c(2,4,4,1,2),c(2,3,5,4,2)))
Sr2 = Polygon(cbind(c(5,4,2,5),c(2,3,2,2)))
Sr3 = Polygon(cbind(c(4,4,5,10,4),c(5,3,2,5,5)))
Sr4 = Polygon(cbind(c(5,6,6,5,5),c(4,4,3,3,4)), hole = TRUE)
Srs1 = Polygons(list(Sr1), "s1")
Srs2 = Polygons(list(Sr2), "s2")
Srs3 = Polygons(list(Sr3, Sr4), "s3/4")
SpP = SpatialPolygons(list(Srs1,Srs2,Srs3), 1:3)
grd <- GridTopology(c(1,1), c(1,1), c(10,10))
polys <- as(grd, "SpatialPolygons")
centroids <- coordinates(polys)
x <- centroids[,1]
y <- centroids[,2]
z <- 1.4 + 0.1*x + 0.2*y + 0.002*x*x
ex_1.7 <- SpatialPolygonsDataFrame(polys,
data=data.frame(x=x, y=y, z=z, row.names=row.names(polys)))
ex_1.7$face <- c(rep(1, 50), rep(2,50))
ui <- fluidPage(
leafletOutput("test"))
server <- function(input, output) {
output$test <- renderLeaflet({
# data is a shapefile with geometry properties and a mapping variable and facet variable.
# tmap_mode("view")
map <- tm_shape(ex_1.7) +
tm_polygons() +
# tm_facets(by = "facet_variable",nrow = 2, ncol = 2) +
# tm_facets(by = "face", nrow = 2, ncol = 2) +
tm_shape(ex_1.7) +
# tm_fill(col = "mapping_variable",
tm_fill(col = "y",
legend.show = T,
colorNA = "grey",
palette = "Reds",n=9) +
tm_shape(ex_1.7) +
tm_borders("white",alpha=.8, lwd=1.5) +
tm_layout(outer.margins = 0) +
tm_view(legend.position = c("left","bottom"))
tmap_leaflet(map)
})
}
shinyApp(ui = ui, server = server)