NYC Flights Homework

Load the libraries and view the “flights” dataset

library(tidyverse)
## -- Attaching packages --------------------------------------- tidyverse 1.3.1 --
## v ggplot2 3.3.5     v purrr   0.3.4
## v tibble  3.1.2     v dplyr   1.0.7
## v tidyr   1.1.3     v stringr 1.4.0
## v readr   1.4.0     v forcats 0.5.1
## Warning: package 'ggplot2' was built under R version 4.1.2
## -- Conflicts ------------------------------------------ tidyverse_conflicts() --
## x dplyr::filter() masks stats::filter()
## x dplyr::lag()    masks stats::lag()
library(nycflights13)
## Warning: package 'nycflights13' was built under R version 4.1.2

Now create one data visualization with this dataset

Your assignment is to create one plot to visualize one aspect of this dataset. The plot may be any type we have covered so far in this class (bargraphs, scatterplots, boxplots, histograms, treemaps, heatmaps, streamgraphs, or alluvials)

Requirements for the plot:

  1. Include at least one dplyr command (filter, sort, summarize, group_by, select, mutate, ….)
  2. Include labels for the x- and y-axes
  3. Include a title
  4. Your plot must incorporate at least 2 colors
  5. Include a legend that indicates what the colors represent
  6. Write a brief paragraph that describes the visualization you have created and at least one aspect of the plot that you would like to highlight.

Start early so that if you do have trouble, you can email me with questions

str(flights)
## tibble [336,776 x 19] (S3: tbl_df/tbl/data.frame)
##  $ year          : int [1:336776] 2013 2013 2013 2013 2013 2013 2013 2013 2013 2013 ...
##  $ month         : int [1:336776] 1 1 1 1 1 1 1 1 1 1 ...
##  $ day           : int [1:336776] 1 1 1 1 1 1 1 1 1 1 ...
##  $ dep_time      : int [1:336776] 517 533 542 544 554 554 555 557 557 558 ...
##  $ sched_dep_time: int [1:336776] 515 529 540 545 600 558 600 600 600 600 ...
##  $ dep_delay     : num [1:336776] 2 4 2 -1 -6 -4 -5 -3 -3 -2 ...
##  $ arr_time      : int [1:336776] 830 850 923 1004 812 740 913 709 838 753 ...
##  $ sched_arr_time: int [1:336776] 819 830 850 1022 837 728 854 723 846 745 ...
##  $ arr_delay     : num [1:336776] 11 20 33 -18 -25 12 19 -14 -8 8 ...
##  $ carrier       : chr [1:336776] "UA" "UA" "AA" "B6" ...
##  $ flight        : int [1:336776] 1545 1714 1141 725 461 1696 507 5708 79 301 ...
##  $ tailnum       : chr [1:336776] "N14228" "N24211" "N619AA" "N804JB" ...
##  $ origin        : chr [1:336776] "EWR" "LGA" "JFK" "JFK" ...
##  $ dest          : chr [1:336776] "IAH" "IAH" "MIA" "BQN" ...
##  $ air_time      : num [1:336776] 227 227 160 183 116 150 158 53 140 138 ...
##  $ distance      : num [1:336776] 1400 1416 1089 1576 762 ...
##  $ hour          : num [1:336776] 5 5 5 5 6 5 6 6 6 6 ...
##  $ minute        : num [1:336776] 15 29 40 45 0 58 0 0 0 0 ...
##  $ time_hour     : POSIXct[1:336776], format: "2013-01-01 05:00:00" "2013-01-01 05:00:00" ...
head(flights)
## # A tibble: 6 x 19
##    year month   day dep_time sched_dep_time dep_delay arr_time sched_arr_time
##   <int> <int> <int>    <int>          <int>     <dbl>    <int>          <int>
## 1  2013     1     1      517            515         2      830            819
## 2  2013     1     1      533            529         4      850            830
## 3  2013     1     1      542            540         2      923            850
## 4  2013     1     1      544            545        -1     1004           1022
## 5  2013     1     1      554            600        -6      812            837
## 6  2013     1     1      554            558        -4      740            728
## # ... with 11 more variables: arr_delay <dbl>, carrier <chr>, flight <int>,
## #   tailnum <chr>, origin <chr>, dest <chr>, air_time <dbl>, distance <dbl>,
## #   hour <dbl>, minute <dbl>, time_hour <dttm>

Use the filter function to target flights from IAH in May to December

IAH_monthly_flights <- flights %>%
    filter(dest == "IAH" & month <= 5 & year == 2013)
IAH_monthly_flights
## # A tibble: 2,938 x 19
##     year month   day dep_time sched_dep_time dep_delay arr_time sched_arr_time
##    <int> <int> <int>    <int>          <int>     <dbl>    <int>          <int>
##  1  2013     1     1      517            515         2      830            819
##  2  2013     1     1      533            529         4      850            830
##  3  2013     1     1      623            627        -4      933            932
##  4  2013     1     1      728            732        -4     1041           1038
##  5  2013     1     1      739            739         0     1104           1038
##  6  2013     1     1      908            908         0     1228           1219
##  7  2013     1     1     1028           1026         2     1350           1339
##  8  2013     1     1     1044           1045        -1     1352           1351
##  9  2013     1     1     1114            900       134     1447           1222
## 10  2013     1     1     1205           1200         5     1503           1505
## # ... with 2,928 more rows, and 11 more variables: arr_delay <dbl>,
## #   carrier <chr>, flight <int>, tailnum <chr>, origin <chr>, dest <chr>,
## #   air_time <dbl>, distance <dbl>, hour <dbl>, minute <dbl>, time_hour <dttm>
IAH_monthly_flights$month[IAH_monthly_flights$month == 1]<- "January"
IAH_monthly_flights$month[IAH_monthly_flights$month == 2]<- "Febuary"
IAH_monthly_flights$month[IAH_monthly_flights$month == 3]<- "March"
IAH_monthly_flights$month[IAH_monthly_flights$month == 4]<- "April"
IAH_monthly_flights$month[IAH_monthly_flights$month == 5]<- "May"
IAH_monthly_flights$month[IAH_monthly_flights$month == 6]<- "June"
IAH_monthly_flights$month[IAH_monthly_flights$month == 7]<- "July"
IAH_monthly_flights$month[IAH_monthly_flights$month == 8]<- "August"
IAH_monthly_flights$month[IAH_monthly_flights$month == 9]<- "September"
IAH_monthly_flights$month[IAH_monthly_flights$month == 10]<- "October"
IAH_monthly_flights$month[IAH_monthly_flights$month == 11]<- "November"
IAH_monthly_flights$month[IAH_monthly_flights$month == 12]<- "Decemeber"
flights_barplot <- IAH_monthly_flights %>%
  ggplot() + 
  geom_bar(mapping =aes(x=month, y = dep_delay, fill = month),
           position = "dodge", stat = "identity") +
  ggtitle("IAH flight delays in 2013") +
  ylab("Number of Flight delays") +
  labs(fill = "Flight delay months")
flights_barplot
## Warning: Removed 52 rows containing missing values (geom_bar).

The plot above is displayed as a bar graph. The bar graph shows how April has the highest amount of flight delays in 2013. What I like about this bar graph is that for the highest amount of delays, April is the month that shows the highest number of flight delays, and it is the brighest so you can easily specify which month has the highest number. of flight delays. What I would like to practice more on is to be able to target specific parts of the data.