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closes #51 #52

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48 changes: 27 additions & 21 deletions R/server.R
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Original file line number Diff line number Diff line change
Expand Up @@ -67,7 +67,8 @@ shinyAppServer = function(input, output, session) {
crashes <<- readRDS(crashes_file_name)
crashes_exist <- TRUE
}
net$layer = net$flow
net = get_layer (net, input$layer)
#net$layer = net$flow
if(input$safety) {
if (crashes_exist) {
plot_map(net, input$layer, update_view = TRUE) %>%
Expand All @@ -87,26 +88,7 @@ shinyAppServer = function(input, output, session) {
input$layer
},
{
if (input$layer == "Pedestrian flow") {
net$layer = net$flow
} else if (input$layer == "Vehicular flow") {
if ("centrality" %in% names(net)) {
net$layer = net$centrality
} else {
net$layer = net$flow
}
} else if (input$layer == "Vehicular emissions") {
if ("centrality_disp" %in% names(net)) {
net$layer = net$centrality_disp
} else {
net$layer = net$flow
}
} else if (input$layer == "Pedestrian exposure") {
net$layer = net$flow
if ("centrality_disp" %in% names(net)) {
net$layer = net$flow * net$centrality_disp
}
}
net = get_layer (net, input$layer)
plot_map(net, input$layer, update_view = FALSE)
}
)
Expand Down Expand Up @@ -148,6 +130,30 @@ shinyAppServer = function(input, output, session) {

}

get_layer = function(net, layer) {
if (layer == "Pedestrian flow") {
net$layer = net$flow
} else if (layer == "Vehicular flow") {
if ("centrality" %in% names(net)) {
net$layer = net$centrality
} else {
net$layer = net$flow
}
} else if (layer == "Vehicular emissions") {
if ("centrality_disp" %in% names(net)) {
net$layer = net$centrality_disp
} else {
net$layer = net$flow
}
} else if (layer == "Pedestrian exposure") {
net$layer = net$flow
if ("centrality_disp" %in% names(net)) {
net$layer = net$flow * net$centrality_disp
}
}
return(net)
}

plot_map = function(net, leg_title, update_view = FALSE) {
threshold <- 0.01 # constant relative threshold - maybe expose later?
net = net [net$flow > (threshold * max (net$flow, na.rm = TRUE)), ]
Expand Down