10.2 Wrangling Data Review

It is always useful to remind ourselves of the dataset with a random sample:

ds  %>% sample_frac() %>% select(date, location, sample(3:length(vars), 5))
## # A tibble: 208,495 × 7
##    date       location      max_temp wind_gust_speed wind_dir_3pm risk_mm
##    <date>     <chr>            <dbl>           <dbl> <ord>          <dbl>
##  1 2011-11-20 Bendigo           22.5              56 W                0  
##  2 2011-09-16 Launceston        18.3              37 WNW              0  
##  3 2011-10-06 Sydney            19                22 NE               2.2
##  4 2015-04-11 BadgerysCreek     23                20 N                0  
##  5 2020-05-12 BadgerysCreek     19.6              24 NNE              0  
##  6 2021-08-11 Moree             22.9              43 NE               0  
##  7 2020-07-20 NorahHead         17.7              28 WSW              0  
##  8 2015-08-01 Nhil              10.1              46 SSW              1.4
##  9 2018-06-10 Albany            15.6              NA <NA>            11  
## 10 2015-08-09 Dartmoor          15.6              46 N                2.2
## # ℹ 208,485 more rows
## # ℹ 1 more variable: humidity_3pm <int>
glimpse(ds)
## Rows: 208,495
## Columns: 24
## $ date            <date> 2008-12-01, 2008-12-02, 2008-12-03, 2008-12-04, 2008-…
## $ location        <chr> "Albury", "Albury", "Albury", "Albury", "Albury", "Alb…
## $ min_temp        <dbl> 13.4, 7.4, 12.9, 9.2, 17.5, 14.6, 14.3, 7.7, 9.7, 13.1…
## $ max_temp        <dbl> 22.9, 25.1, 25.7, 28.0, 32.3, 29.7, 25.0, 26.7, 31.9, …
## $ rainfall        <dbl> 0.6, 0.0, 0.0, 0.0, 1.0, 0.2, 0.0, 0.0, 0.0, 1.4, 0.0,…
## $ evaporation     <dbl> NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA…
## $ sunshine        <dbl> NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA…
## $ wind_gust_dir   <ord> W, WNW, WSW, NE, W, WNW, W, W, NNW, W, N, NNE, W, SW, …
## $ wind_gust_speed <dbl> 44, 44, 46, 24, 41, 56, 50, 35, 80, 28, 30, 31, 61, 44…
## $ wind_dir_9am    <ord> W, NNW, W, SE, ENE, W, SW, SSE, SE, S, SSE, NE, NNW, W…
## $ wind_dir_3pm    <ord> WNW, WSW, WSW, E, NW, W, W, W, NW, SSE, ESE, ENE, NNW,…
## $ wind_speed_9am  <dbl> 20, 4, 19, 11, 7, 19, 20, 6, 7, 15, 17, 15, 28, 24, 4,…
## $ wind_speed_3pm  <dbl> 24, 22, 26, 9, 20, 24, 24, 17, 28, 11, 6, 13, 28, 20, …
## $ humidity_9am    <int> 71, 44, 38, 45, 82, 55, 49, 48, 42, 58, 48, 89, 76, 65…
## $ humidity_3pm    <int> 22, 25, 30, 16, 33, 23, 19, 19, 9, 27, 22, 91, 93, 43,…
## $ pressure_9am    <dbl> 1007.7, 1010.6, 1007.6, 1017.6, 1010.8, 1009.2, 1009.6…
## $ pressure_3pm    <dbl> 1007.1, 1007.8, 1008.7, 1012.8, 1006.0, 1005.4, 1008.2…
## $ cloud_9am       <int> 8, NA, NA, NA, 7, NA, 1, NA, NA, NA, NA, 8, 8, NA, NA,…
....


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