Created
October 30, 2021 04:13
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Visualizing Google Maps Trip Durations (distributions)
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library(tidyverse) | |
library(lubridate) | |
library(ggdist) | |
library(distributional) | |
tibble::tribble(~departure_time, ~duration_min, ~duration_max, | |
"9:00am", lubridate::dminutes(65), dminutes(100), | |
#"9:15am", lubridate::dminutes(70), dminutes(100), | |
"9:30am", lubridate::dminutes(70), dminutes(110), | |
#"9:45am", lubridate::dminutes(70), dminutes(110), | |
"10:00am", lubridate::dminutes(75), dminutes(130), | |
#"10:15am", lubridate::dminutes(75), dminutes(130), | |
"10:30am", lubridate::dminutes(80), dminutes(130), | |
#"10:45am", lubridate::dminutes(80), dminutes(140), | |
"11:00am", lubridate::dminutes(80), dminutes(140), | |
"11:30am", lubridate::dminutes(80), dminutes(140), | |
"12:00pm", lubridate::dminutes(85), dminutes(140), | |
"12:30pm", lubridate::dminutes(85), dminutes(140), | |
"1:00pm", lubridate::dminutes(85), dminutes(140), | |
"1:30pm", lubridate::dminutes(85), dminutes(140), | |
"2:00pm", lubridate::dminutes(85), dminutes(140)) %>% | |
mutate(departure = ymd_hm(paste(today()+days(1), departure_time))) %>% | |
rowwise() %>% | |
mutate(duration_mean = dseconds(mean(c_across(contains("duration")))), | |
duration_sd = dseconds(sd(c_across(contains("duration")))), | |
duration_dist = dist_normal(as.integer(duration_mean), as.integer(duration_sd))) %>% | |
ggplot(., aes(x = departure, y = duration_mean, dist = dist_normal(as.integer(duration_mean), as.integer(duration_sd)), | |
ymin = duration_min, ymax = duration_max))+ | |
stat_dist_halfeye(size = 4, stroke = 2, alpha = .95)+ | |
geom_line(linetype = "dashed", size = 1, alpha = .7)+ | |
scale_y_continuous(name = "Trip time", breaks = 60*60*0:3, labels = ~str_c(hour(seconds_to_period(dseconds(.))), "hr"))+ | |
scale_x_time(name = "Departure time",labels = scales::label_time("%I:%M%p"), | |
breaks = scales::breaks_width("30 min"))+ | |
labs(title = "Trip duration, by departure time", | |
subtitle = "Based on departure between 9:00am and 2:00pm")+ | |
theme_minimal(base_size = 18) |
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