Description Usage Arguments Value Examples
Use this in 'shiny' application to update an already generated topogram()
.
1 2 3 4 5 6 7 8 9 | topogram_proxy_update(
proxy,
sfobj,
value,
label = "{value}",
palette = "viridis",
rescale_to = c(1, 1000),
n_iteration = 10
)
|
proxy |
A |
sfobj |
An |
value |
Variable name to use to distort topology. |
label |
|
palette |
Name of a color palette, such as |
rescale_to |
Rescale value to distort topology to a specified range, use |
n_iteration |
Number of iterations to run the algorithm for. Higher numbers distorts the areas closer to their associated value, at the cost of performance. |
A topogram_proxy
htmlwidget
object.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 | library(topogram)
library(shiny)
ui <- fluidPage(
tags$h2("Update topogram with proxy"),
radioButtons(
inputId = "new_value",
label = "Select a variable:",
choices = names(world)[3:7],
inline = TRUE
),
topogramOutput(outputId = "ID", height = "800px")
)
server <- function(input, output, session) {
# Initialize the topogram (non reactive)
output$ID <- renderTopogram({
topogram(
sfobj = world,
value = "pop_est",
label = "{name} : {value}"
) %>%
topogram_legend(title = "Population")
})
# Update with proxy
observeEvent(input$new_value, {
topogram_proxy_update(
"ID", world,
value = input$new_value,
label = "{name} : {value}"
) %>%
topogram_legend(title = input$new_value)
}, ignoreInit = TRUE)
}
if (interactive())
shinyApp(ui, server)
|
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