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####################################
##### minimal example - server.R ###
####################################
library(shiny) # load shiny at beginning at both scripts
shinyServer(function(input, output) { # server is defined within these parentheses
output$textDisplay <- renderText({ # mark function as reactive and assign to
# output$textDisplay for passing to ui.R
@ChrisBeeley
ChrisBeeley / server.R
Last active October 2, 2019 15:55
Demo to show widget types, return values and data types in Shiny
function(input, output) {
output$textDisplay <- renderTable({
getMat = matrix(
c(paste(input$checkGroup, collapse=','), class(input$checkGroup),
input$boxInput, class(input$boxInput),
as.character(as.Date(input$theDate, origin = "1970-01-01")), class(input$theDate),
paste(as.character(as.Date(input$dateRange[[1]], origin = "1970-01-01")),
as.character(as.Date(input$dateRange[[2]], origin = "1970-01-01")),
@ChrisBeeley
ChrisBeeley / server.R
Last active August 29, 2015 14:26
Minimal application for Shiny Book, 2nd edition
library(shiny) # load Shiny at the top of both scripts
shinyServer(function(input, output) { # define application in here
output$textDisplay <- renderText({ # mark function as reactive
# and assign to output$textDisplay for passing to ui.R
paste0("You said '", input$comment, # from the text
"'. There are ", nchar(input$comment), # input control as
" characters in this.") # defined in ui.R
@ChrisBeeley
ChrisBeeley / app.R
Last active June 12, 2017 17:28
Single file app which takes various GET parameters and returns the appropriate date boxes (see below for link to blog post)
library(shiny)
library(lubridate)
server = function(input, output, session){
# type = date rolling n months, quarters
output$dateControls <- renderUI({
---
title: "Basic RMarkdown Shiny"
author: "Chris Beeley"
output: html_document
runtime: shiny
---
# Example RMarkdown document
This is an interactive document written in *markdown*. As you can see it is easy to include:
@ChrisBeeley
ChrisBeeley / server.R
Created December 22, 2015 22:30
Minimal example of a full Shiny application
library(shiny) # load Shiny at the top of both scripts
shinyServer(function(input, output) { # define application in here
output$textDisplay <- renderText({ # mark function as reactive
# and assign to output$textDisplay for passing to ui.R
paste0("You said '", input$comment, # from the text
"'. There are ", nchar(input$comment), # input control as
@ChrisBeeley
ChrisBeeley / dropdownDepend.js
Created January 1, 2016 14:38
Sending messages to and from client and server using JavaScript/ Shiny
<script type="text/javascript">
// Shiny function to receive messages
Shiny.addCustomMessageHandler("sendMessage",
function(message) {
// call this before modifying the DOM
Shiny.unbindAll();
/* delete the dropdown if it already
@ChrisBeeley
ChrisBeeley / dplyrReprex
Created November 13, 2018 16:29
This is just a reprex of a thing that I couldn't replicate on Stack Overflow https://stackoverflow.com/questions/34860535/how-to-use-dplyr-to-generate-a-frequency-table/34860724
library(tidyverse)
#> Warning: package 'tidyverse' was built under R version 3.4.4
#> -- Attaching packages ----------------------------------------------------------------------------------------------- tidyverse 1.2.1 --
#> v ggplot2 3.0.0 v purrr 0.2.4
#> v tibble 1.4.2 v dplyr 0.7.6
#> v tidyr 0.8.1 v stringr 1.3.0
#> v readr 1.1.1 v forcats 0.3.0
#> Warning: package 'ggplot2' was built under R version 3.4.4
#> Warning: package 'tibble' was built under R version 3.4.4
#> Warning: package 'readr' was built under R version 3.4.4
fixedData[, missnum > 2] %>%
gather(L1, value) %>%
filter(!is.na(value)) %>%
left_join(select(questionFrame, code, value), by = c("L1" = "code")) %>%
select(-L1) %>%
group_by(value.y) %>%
count(value.x) %>%
mutate(prop = prop.table(n) * 100) %>%
select(-n) %>%
mutate(value.x = factor(value.x, levels = 1:5)) %>%
function(input, output) { # define application in here
output$textDisplay <- renderText({ # mark function as reactive
# and assign to output$textDisplay for passing to ui.R
paste0("You said '", input$comment, # from the text
"'. There are ", nchar(input$comment), # input control as
" characters in this.") # defined in ui.R
})