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server.R
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# Loading required libraries
library(shinydashboard)
library(leaflet)
library(dplyr)
library(spdplyr)
library(RColorBrewer)
library(viridis)
library(reshape2)
# Disabling trace
options(shiny.trace=F)
# Adding Jan Vydra's fix encoding function from https://stackoverflow.com/questions/34024654/reading-rdata-file-with-different-encoding
fix.encoding <- function(df, originalEncoding = "UTF-8") {
numCols <- ncol(df)
df <- data.frame(df)
for (col in 1:numCols)
{
if(class(df[, col]) == "character"){
Encoding(df[, col]) <- originalEncoding
}
if(class(df[, col]) == "factor"){
Encoding(levels(df[, col])) <- originalEncoding
}
}
return(as_data_frame(df))
}
# Loading shapes
barrios_m <- readRDS("Data/barrios_merged.RDS")
barrios_p <- readRDS("Data/barrios_pil.RDS")
manzbarr <- readRDS("Data/Manzanasbarriospiloto.RDS")
# Loading databases
empl <- readRDS("Data/empleabilidadmismacomuna.RDS")
matr <- readRDS("Data/materialidad.RDS")
mujt <- readRDS("Data/mujerestrabajando.RDS")
acte <- readRDS("Data/accesotecnologia.RDS")
aav <- readRDS("Data/aav.RDS")
acc <- readRDS("Data/accesibility_score_final.RDS")
acc2 <- readRDS("Data/accesibility_score_final_15.RDS")
acntrmin <- readRDS("Data/anoconstruccion_min.RDS")
acntrmax <- readRDS("Data/anoconstruccion_max.RDS")
vehiculos <- readRDS("Data/vehiculos.RDS")
avaluo <- readRDS("Data/valuesii.RDS")
personas <- readRDS("Data/numerodepersonas.RDS")
#Fix encoding
barrios_m@data <- fix.encoding(barrios_m@data)
barrios_p@data <- fix.encoding(barrios_p@data)
manzbarr <- fix.encoding(manzbarr)
empl <- fix.encoding(empl)
matr <- fix.encoding(matr)
mujt <- fix.encoding(mujt)
acte <- fix.encoding(acte)
aav <- fix.encoding(aav)
acc <- fix.encoding(acc)
acc2 <- fix.encoding(acc2)
acntrmin <- fix.encoding(acntrmin)
acntrmax <- fix.encoding(acntrmax)
vehiculos <- fix.encoding(vehiculos)
avaluo <- fix.encoding(avaluo)
personas <- fix.encoding(personas)
# Shiny starts here
function(input, output, session) {
# Adding data to dropdown's
output$Ciudad <- renderUI({
ciudadesList <- unique(barrios_p@data$CIUDAD)
selectInput("CiudadSelection", "Ciudad", choices = ciudadesList, selected = ciudadesList[1])
})
output$Barrio <- renderUI({
req(input$CiudadSelection)
filtered <- filter(barrios_p@data, CIUDAD == input$CiudadSelection)
routeNums <- filtered$BARRIO
selectInput("BarrioSelection", "Barrio", choices = routeNums, selected = routeNums[1])
})
output$Variable <- renderUI({
options <- c("% Viviendas de buena calidad",
"% Mujeres trabajando",
"% Empleados en la misma comuna",
"% Acceso a tecnologias de la información",
"Cercanía a Areas Verdes","Caminabilidad a servicios urbanos - 10 min - 1.25 m/s",
"Caminabilidad a servicios urbanos - 15 min - 1.38 m/s",
"Mediana de años de construcción (Año mínimo)",
"Mediana de años de construcción (Año máximo)",
"Presencia de vehiculos",
"Avaluo",
"Personas"
)
selectInput("VarU", "Variable", choices = options, selected = options[1])
})
# Setting up an observer
observeEvent({c(input$VarU,input$BarrioSelection)},{
req(input$VarU)
req(input$BarrioSelection)
VarList <- data.frame(var=c("% Viviendas de buena calidad",
"% Mujeres trabajando",
"% Empleados en la misma comuna",
"% Acceso a tecnologias de la información",
"Cercanía a Areas Verdes",
"Caminabilidad a servicios urbanos - 10 min - 1.25 m/s",
"Caminabilidad a servicios urbanos - 15 min - 1.38 m/s",
"Mediana de años de construcción (Año mínimo)",
"Mediana de años de construcción (Año máximo)",
"Presencia de vehiculos",
"Avaluo",
"Personas"),
db=c("matr","mujt","empl","acte","aav","acc","acc2","acntrmin","acntrmax","vehiculos","avaluo","personas"),
legend=c(1,1,1,1,2,1,1,3,3,1,4,5))
db <- eval(as.name(as.character(VarList[match(input$VarU,VarList$var),]$db)))
# Getting data
if(suppressWarnings(nrow(db[db$d==input$BarrioSelection,]))>0){
data <- db[db$d==input$BarrioSelection,] %>% mutate(MANZENT=ID_W)
} else {
data <- db %>% mutate(MANZENT=ID_W)
}
# Doing merges
shape <<- sp::merge(barrios_m,data,by="MANZENT") # Dirrrrrty
shape_barr <- base::merge(manzbarr,data,by="MANZENT")
# Calculating the mean and the variance for units
meanbarrio <- round(mean(subset(shape,BARRIO == input$BarrioSelection)$value,na.rm=T),2)
meansmall <- round(mean(subset(shape_barr,BARRIO == input$BarrioSelection)$value,na.rm=T),2)
variancebarrio <- round(sd(subset(shape,BARRIO == input$BarrioSelection)$value,na.rm=T),2)
variancesmall <- round(sd(subset(shape_barr,BARRIO == input$BarrioSelection)$value,na.rm=T),2)
unitscounterbarrio <- length(subset(shape,BARRIO == input$BarrioSelection)$value)
unitscountersmall <- length(subset(shape_barr,BARRIO == input$BarrioSelection)$value)
# Displaying the values
output$unitsBox <- renderValueBox({
valueBox(
paste(unitscountersmall,"/",unitscounterbarrio,sep=" "), "Unidades (Barrio/Buffer)",
color = "purple"
)})
output$meanBox <- renderValueBox({
valueBox(
paste(meansmall,"/",meanbarrio,sep=" "), "Promedio (Barrio/Buffer)",
color = "purple"
)})
output$varianceBox <- renderValueBox({
valueBox(
paste(variancesmall,"/",variancebarrio,sep=" "), "Desviación Estándar (Barrio/Buffer)",
color = "purple"
)})
# Map here custom from mapbox!
output$vizmap <- renderLeaflet({
leaflet(filter(shape,BARRIO == input$BarrioSelection)) %>%
addTiles(urlTemplate = "https://api.mapbox.com/styles/v1/robsalasco/cizaf21t600762rmu7spm9p06/tiles/256/{z}/{x}/{y}?access_token=pk.eyJ1Ijoicm9ic2FsYXNjbyIsImEiOiJjaWcxbzh1bjAxMHhodXdsdnczZ28xOHc1In0.WkFivOlHKIMwx30ssZorBw",attribution = 'Mapa por <a href="http://www.mapbox.com/">Mapbox</a> | Aplicación por <a href="mailto:rosalasATuc.cl">Roberto Salas</a>')
})
state_popup <- paste0(round(subset(shape,BARRIO == input$BarrioSelection)$value,2),sep="")
# Loading palettes
palette <- colorBin(viridis_pal()(11),
bins = c(0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100), na.color = "#FFFFFF00")
palette.contru <- colorBin(viridis_pal()(11),
bins = c(0, 1920.0, 1940.0,1950.0, 1960.0, 1970.0, 1980.0, 1990.0, 2000.0, 2010.0, 2020.0),na.color = "#FFFFFF00")
palette.avaluo <- colorBin(viridis_pal()(11),
bins = cbreaks(c(min(subset(shape,BARRIO == input$BarrioSelection)$value,na.rm = T), max(subset(shape,BARRIO == input$BarrioSelection)$value,na.rm = T)), pretty_breaks(9))$breaks, na.color = "#FFFFFF00")
palette.personas <- colorBin(viridis_pal()(11),
bins = cbreaks(c(min(subset(shape,BARRIO == input$BarrioSelection)$value,na.rm = T), max(subset(shape,BARRIO == input$BarrioSelection)$value,na.rm = T)), pretty_breaks(9))$breaks, na.color = "#FFFFFF00")
# Subset
datamap <- filter(shape,BARRIO == input$BarrioSelection)
# Proxy to update on the fly because we are using different units of measure
proxy <- leafletProxy("vizmap",data=datamap)
proxy %>% clearControls()
if (VarList[match(input$VarU,VarList$var),]$legend == 1)
{proxy %>% fitBounds(lng1 = bbox(datamap)[[3]],lat1 = bbox(datamap)[[4]], lng2 = bbox(datamap)[[1]],lat2 = bbox(datamap)[[2]]) %>%
addPolygons(weight = 0.5,
color = '#444444',
fillOpacity = 1,
fillColor = ~palette(value),
popup = state_popup,stroke = TRUE, group = "Variable") %>%
addPolygons(data = barrios_p %>% filter(BARRIO == input$BarrioSelection),
weight = 4, color = 'red', fillOpacity = 0, fillColor = '#000000', group = "Poligono") %>% addLegend("bottomright", pal = palette, values = ~value,
title = "",
labFormat = labelFormat(suffix = "%"),
opacity = 1) %>%
addLayersControl(overlayGroups = c("Variable", "Poligono"),
options = layersControlOptions(collapsed = T))
}
else if (VarList[match(input$VarU,VarList$var),]$legend == 2)
{proxy %>% fitBounds(lng1 = bbox(datamap)[[3]],lat1 = bbox(datamap)[[4]], lng2 = bbox(datamap)[[1]],lat2 = bbox(datamap)[[2]]) %>%
addPolygons(weight = 0.5,
color = '#444444',
fillOpacity = 1,
fillColor = ~palette(value),
popup = state_popup,stroke = TRUE, group = "Variable") %>%
addPolygons(data = barrios_p %>% filter(BARRIO == input$BarrioSelection),
weight = 4, color = 'red', fillOpacity = 0, fillColor = '#000000', group = "Poligono") %>% addLegend("bottomright", colors = viridis_pal()(2), values = ~value,
title = "",
labels= c("No","Si"),
opacity = 1) %>%
addLayersControl(overlayGroups = c("Variable", "Poligono"),
options = layersControlOptions(collapsed = T))
}
else if (VarList[match(input$VarU,VarList$var),]$legend == 3)
{proxy %>% fitBounds(lng1 = bbox(datamap)[[3]],lat1 = bbox(datamap)[[4]], lng2 = bbox(datamap)[[1]],lat2 = bbox(datamap)[[2]]) %>%
addPolygons(weight = 0.5,
color = '#444444',
fillOpacity = 1,
fillColor = ~palette.contru(value),
popup = state_popup,stroke = TRUE, group = "Variable") %>%
addPolygons(data = barrios_p %>% filter(BARRIO == input$BarrioSelection),
weight = 4, color = 'red', fillOpacity = 0, fillColor = '#000000', group = "Poligono") %>% addLegend("bottomright", pal = palette.contru, values = ~value,
title = "",
opacity = 1) %>%
addLayersControl(overlayGroups = c("Variable", "Poligono"),
options = layersControlOptions(collapsed = T))
}
else if (VarList[match(input$VarU,VarList$var),]$legend == 4)
{proxy %>% fitBounds(lng1 = bbox(datamap)[[3]],lat1 = bbox(datamap)[[4]], lng2 = bbox(datamap)[[1]],lat2 = bbox(datamap)[[2]]) %>%
addPolygons(weight = 0.5,
color = '#444444',
fillOpacity = 1,
fillColor = ~palette.avaluo(value),
popup = state_popup,stroke = TRUE, group = "Variable") %>%
addPolygons(data = barrios_p %>% filter(BARRIO == input$BarrioSelection),
weight = 4, color = 'red', fillOpacity = 0, fillColor = '#000000', group = "Poligono") %>% addLegend("bottomright", pal = palette.avaluo, values = ~value,
title = "",
opacity = 1) %>%
addLayersControl(overlayGroups = c("Variable", "Poligono"),
options = layersControlOptions(collapsed = T))
}
else if (VarList[match(input$VarU,VarList$var),]$legend == 5)
{proxy %>% fitBounds(lng1 = bbox(datamap)[[3]],lat1 = bbox(datamap)[[4]], lng2 = bbox(datamap)[[1]],lat2 = bbox(datamap)[[2]]) %>%
addPolygons(weight = 0.5,
color = '#444444',
fillOpacity = 1,
fillColor = ~palette.personas(value),
popup = state_popup,stroke = TRUE, group = "Variable") %>%
addPolygons(data = barrios_p %>% filter(BARRIO == input$BarrioSelection),
weight = 4, color = 'red', fillOpacity = 0, fillColor = '#000000', group = "Poligono") %>% addLegend("bottomright", pal = palette.personas, values = ~value,
title = "",
opacity = 1) %>%
addLayersControl(overlayGroups = c("Variable", "Poligono"),
options = layersControlOptions(collapsed = T))
}
})
# Credits
output$Texto <- renderUI({
HTML(paste("<p style='text-align:center'><a href='http://www.cedeus.cl'><img src='http://www.cedeus.cl/wp-content/themes/cedeus/img/logo.png' height='52'></a></p>"))
})
}