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#' @import shiny methods
#' @export
kmeans_cluster <- function(dataset) {
shinyApp(
ui = fluidPage(responsive = FALSE,
fluidRow(style = "padding-bottom: 20px;",
column(4, selectInput('xcol', 'X Variable', names(dataset))),
column(4, selectInput('ycol', 'Y Variable', names(dataset),
selected=names(dataset)[[2]])),
column(4, numericInput('clusters', 'Cluster count', 3,
min = 1, max = 9))
),
fluidRow(
plotOutput('kmeans', height = "400px")
)
),
server = function(input, output, session) {
# Combine the selected variables into a new data frame
selectedData <- reactive({
dataset[, c(input$xcol, input$ycol)]
})
clusters <- reactive({
kmeans(selectedData(), input$clusters)
})
output$kmeans <- renderPlot(height = 400, {
par(mar = c(5.1, 4.1, 0, 1))
plot(selectedData(),
col = clusters()$cluster,
pch = 20, cex = 3)
points(clusters()$centers, pch = 4, cex = 4, lwd = 4)
})
},
options = list(height = 500)
)
}