R Programming: Order the dataset airquality entire data frame by the first and second column

R Programming: Data frame Exercise-25 with Solution

Write a R program to call the (built-in) dataset airquality. Check whether it is a data frame or not? Order the entire data frame by the first and second column.

Sample Solution :

R Programming Code :

data = airquality
print("Original data: Daily air quality measurements in New York, May to September 1973.")
print(class(data))
print(head(data,10))
result = data[order(data[,1]),]
print("Order the entire data frame by the first and second column:")
print(result)

Sample Output:

[1] "Original data: Daily air quality measurements in New York, May to September 1973."
[1] "data.frame"
   Ozone Solar.R Wind Temp Month Day
1     41     190  7.4   67     5   1
2     36     118  8.0   72     5   2
3     12     149 12.6   74     5   3
4     18     313 11.5   62     5   4
5     NA      NA 14.3   56     5   5
6     28      NA 14.9   66     5   6
7     23     299  8.6   65     5   7
8     19      99 13.8   59     5   8
9      8      19 20.1   61     5   9
10    NA     194  8.6   69     5  10
[1] "Order the entire data frame by the first and second column:"
    Ozone Solar.R Wind Temp Month Day
21      1       8  9.7   59     5  21
23      4      25  9.7   61     5  23
18      6      78 18.4   57     5  18
...........
119    NA     153  5.7   88     8  27
150    NA     145 13.2   77     9  27                         

R Programming Code Editor:

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Next: Write a R program to call the (built-in) dataset airquality. Remove the variables 'Solar.R' and 'Wind' and display the data frame.