在Shiny中进行数据映射

问题描述

我尝试使用rshiny将两组数据转换为地理地图.我已经能够获取我的位置的坐标，并且能够将它们映射到R.现在，我开始为Shiny编写代码.

I have two set of data that I am attempting turn into geomaps using rshiny. I have been able to get the coordinates of my locations, and have been able to get them mapped on R. I am now starting my coding block for Shiny.

样本数据:

  | X1 | Location          | Longitude | Latitude    |
1 | 1  | Brooklyn, NY, USA | 40.678178 | -73.9441579 |
2 | 2  | Liverpool, UK     | 53.408371 | -2.9915726  |

我的ui返回我的标题和选择框，但是无论我在服务器中放什么，我在地图上都看不到其他内容.有人知道我应该运行哪一行代码才能将坐标CSV导入我的闪亮应用程序吗?或者，如果我只是将输出结果转换成地图图像?

My ui returns my titles and select boxes, but regardless of what I put in my server I am not getting anything else on my map. Does anyone know what line of code I should run to get a CSV of my coordinates onto my shiny app? Or if I should just make my output into images of my maps instead?

这是到目前为止我一直在使用的代码:

Here is the code I've been working with so far:

library (shiny)
library (leaflet)
ui <- fluidPage(
 titlePanel("Sentiments of #Breastfeeding Reactions") ,
  selectInput("var",
              label = "Choose a sentiment to display",
              choices = list("Positive", "Negative"),
              selected = "Positive")
  leafletOutput("PositiveMap")
server <- function(input, output)
shinyApp(ui = ui, server = server)

我要使用的数据框是"A.CSV"表示正面情绪，"B.CSV"表示负面情绪.我已经看过精彩的教程，但是仍然不确定如何绘制数据.`

The data frames I am trying to work with are "A.CSV" for positive sentiment and "B.CSV" for negative sentiment. I've watched the shiny tutorial, but remain unsure of how to plot my data.`

推荐答案

要获取特定帮助，您需要共享服务器代码.但是，这是它的外观(可能)的基本原理:

For specific help, you'll need to share your server code. However, here's the basic jist of how it should (could) look:

output$PositiveMap <- renderLeaflet({
leaflet() %>% setView(lat=37.68,lng=-97.33,zoom=4) %>%
addTiles() %>% addMarkers(lng = A$Longitude, lat =A$Latitude )
)}

这篇关于在Shiny中进行数据映射的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！