Input toepassen op één grafiek
Laten we oefenen met het toepassen van een input op één grafiek.
Deze oefening maakt deel uit van de cursus
Dashboards bouwen met flexdashboard
Oefeninstructies
- Laat de grafiek Trip Durations reageren op de schuifregelaar
duration_bindoor de binbreedte aan te passen.
Praktische interactieve oefening
Probeer deze oefening eens door deze voorbeeldcode in te vullen.
{"my_document.Rmd":"---\ntitle: \"Bike Shares Daily\"\noutput: \n flexdashboard::flex_dashboard:\n orientation: columns\n vertical_layout: fill\nruntime: shiny\n---\n\n```{r global, include=FALSE}\nlibrary(flexdashboard)\nlibrary(readr)\nlibrary(leaflet)\nlibrary(DT)\nlibrary(tidyverse)\nlibrary(lubridate)\nlibrary(plotly)\n\ntrips_df <- read_csv('https://assets.datacamp.com/production/repositories/1448/datasets/1f12031000b09ad096880bceb61f6ca2fd95e2eb/sanfran_bikeshare_joined_oneday.csv') %>%\n mutate(duration_min = duration_sec / 60)\n\n```\n\nColumn {data-width=200 .sidebar}\n-----------------------------------------------------------------------\n\n```{r}\n\nsliderInput(\"duration_slider\", label = \"Select maximum trip duration to display (in minutes):\",\n min = 0, max = 120, value = 15, step = 5, dragRange = TRUE)\n\nsliderInput(\"duration_bin\", label = \"Select # of minutes to bin trip durations:\",\n min = 1, max = 15, value = 1, step = 1)\n\nshow_trips_df <- reactive({\n\n trips_df %>%\n filter(duration_sec <= input$duration_slider * 60)\n\n})\n```\n\nColumn {data-width=450}\n-----------------------------------------------------------------------\n\n### Origins\n\n```{r}\n\nrenderLeaflet({\n show_trips_df() %>%\n rename(latitude = start_latitude,\n longitude = start_longitude) %>%\n group_by(start_station_id, latitude, longitude) %>%\n count() %>%\n leaflet() %>%\n addTiles() %>%\n addCircles(radius = ~n)\n})\n\n```\n\nColumn {data-width=350}\n-----------------------------------------------------------------------\n\n### Total Trips\n\n```{r}\n\nrenderValueBox({\n valueBox(prettyNum(show_trips_df() %>%\n nrow(), big.mark = ','), \n icon = 'fa-bicycle')\n})\n\n```\n\n### Trips by Start Time\n\n```{r}\n\nrenderPlot({show_trips_df() %>%\n mutate(hour = hour(start_date)) %>%\n group_by(hour) %>%\n summarize(`Trips Started` = n()) %>%\n ggplot(aes(x = hour, y = `Trips Started`)) +\n theme_bw() +\n ylab('Trips Started \\n') +\n geom_bar(stat = 'identity') \n})\n\n\n```\n\n### Trip Durations\n\n```{r}\n\nrenderPlot({show_trips_df() %>%\n mutate(`Trip Duration (min)` = duration_sec / 60) %>%\n ggplot(aes(x = `Trip Duration (min)`)) +\n theme_bw() +\n geom_histogram() +\n ylab('# Trips')\n})\n\n\n```\n\n\n"}