如何解决闪亮的承诺不能与传单情节一起使用
我正在尝试使用Future and promises软件包来加快我的传单制作。我参考了 Promises package article by shiny
但是我遇到了错误。即“在使用它时不知道如何将类传单的对象转换为Promise”
library(shiny)
library(leaflet)
library(promise)
library(future)
plan(multiprocess)
library(tidyverse)
ui <- navbarPage(
tabPanel(
"Map",sidebarLayout(
sidebarPanel(
br(),mainPanel(
leafletOutput("plot_map")
))))
#Loading Germany map using future
shp1 <- future({geojson_read('www/bundeslander.geojson',what="sp")})
geo_lookup <- read.csv('www/country_codes.csv',stringsAsFactors=F)
server <- function(input,output,session)
{
facebook_filtered <- reactive({
data_fb %>%
collect() %>%
mutate_if(is.integer64,as.integer) %>%
left_join(geo_lookup,by=c("country_name"="Code"))
})
map_data <- reactive({
fbf <- facebook_filtered()
shp1@data %...>%
mutate_if(is.factor,as.character) %...>%
left_join(fbf %...>%
mutate(region=as.character(region)) %...>%
group_by(region) %...>%
summarise(impressions_total = sum(impressions,na.rm=T)) %...>%
# and then we use these column names to select which data we want to map in the
# utility function
rename("impressions"=impressions_total) %...>% rename('video_views'=video_views_total),by=c("name"="region")) %...>%
replace(is.na(.),0)
})
build_leaflet_map <- function(shape_data) {
leaflet(data= shp1) %...>%
addProviderTiles(providers$CartoDB.Positron) %...>%
addPolygons(
stroke=T,color="#c2c5cc",weight=1,opacity=1,fillOpacity=1,fillColor = if(sum(shape_data[[data_column]]) > 0) { ~ pal(shape_data[[data_column]]) } else { "#ffffff" },highlight = highlightOptions(
weight = 2,color = "#989898",fillOpacity = 0.9,bringToFront = T
),label = sprintf( ## TODO - Tidy this up
paste0(
"<strong>%s</strong><br/>%s ",gsub('_',' ',i18n()$t(data_column))
),str_to_title(shape_data$name),## TODO - Set locale to DE where client language is German
num_format(shape_data[[data_column]])
) %...>% lapply(HTML),labelOptions = labelOptions(
style = list("font-weight" = "normal",padding = "5px 10px"),textsize = "15px",direction = "auto"
)
)
}
#=========================
output$plot_map <- renderLeaflet({
build_leaflet_map(map_data())
})
}
# Return a Shiny app object
shinyApp(ui = ui,server = server,options = list(port = 4600,host = '0.0.0.0'))
我还没有看到将传单与承诺
结合使用的任何来源任何人都可以解决的问题真的很有帮助
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