r - Shiny & ggvis select subset of data dynamically -


how can select subset of data , plot using shiny & ggvis? ggvis documentation states, not possible swap dataset using ggvis input_select. besides limitation awesome if data preprocessing & filtering have performed once. try using selectinput(). want able choose parts or whole dataset display

library(ggvis) library(dplyr)   set.seed(1233) cocaine <- cocaine[sample(1:nrow(cocaine), 500), ]  shinyserver(function(input, output, session) {    output$choose_dataset <- renderui({     selectinput("dataset", "select", append("give me all!", as.list(sort(unique(cocaine$state)))))   })      if(input$dataset != "give me all!"){      <- filter(rawdata, cocaine$state == input$dataset)   }   if(input$dataset == "give me all!"){      <- cocaine   }   a$id <- 1:nrow(a)   return(a)      datfiltered %>%     ggvis(~weight, ~price, key := ~id) %>%     bind_shiny("plot1") # important! })

here ui

library(ggvis)  shinyui(bootstrappage(   uioutput("choose_dataset"),   ggvisoutput("plot1")   ))

your code has few problems , doesn't run... why returning main server function? , you're using 2 variables datafiltered , rawdata aren't defined anywhere.

here solution of you're trying 

runapp(shinyapp(   ui = fluidpage(     uioutput("choose_dataset"),     ggvisoutput("plot1")   ),   server = function(input, output, session) {     output$choose_dataset <- renderui({       selectinput("dataset", "select", append("give me all!", as.list(sort(unique(cocaine$state)))))     })      observeevent(input$dataset, {       if(input$dataset == "give me all!"){         data <- cocaine       } else {         data <- filter(cocaine, cocaine$state == input$dataset)       }       data$id <- seq(nrow(data))        data %>%         ggvis(~weight, ~price, key := ~id) %>%         layer_points() %>%         bind_shiny("plot1")      })     } ))

please try post code can run or @ least make in code saying doesn't run or variables need defined etc :)


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