Regarding dataframe

[14ish4]

I am facing issue when trying to print the details of cars in decreasing order of mileage. Got this as a class assignment. Thank you for your help

#Homework

[FJCC]

Can you show what you have tried so far? Paste the code between lines that have three back ticks, like this:
```
Pasted code
```

[14ish4]

 a<- subset(mtcars, mpg>30)
print(a[order(-a$mpg),])

Above is the code that I am trying to use to get the required output

[EconProf]

Are you getting an error message or an unexpected result? It works fine for me.

a<- subset(mtcars, mpg>30)
print(a[order(-a$mpg),])
#>                 mpg cyl disp  hp drat    wt  qsec vs am gear carb
#> Toyota Corolla 33.9   4 71.1  65 4.22 1.835 19.90  1  1    4    1
#> Fiat 128       32.4   4 78.7  66 4.08 2.200 19.47  1  1    4    1
#> Honda Civic    30.4   4 75.7  52 4.93 1.615 18.52  1  1    4    2
#> Lotus Europa   30.4   4 95.1 113 3.77 1.513 16.90  1  1    5    2

^{Created on 2022-08-27 with reprex v2.0.2}

[14ish4]

I am not getting any error message, it's just that not getting expected output. I'll attach the picture of expected output, please check it.

[FactOREO]

Well, this is basically the same output like @EconProf provided with his code. Lotus Europa and Honda Civic have the same mpg value, therefore it is arbitrary which one should be displayed first. If you really want to have Lotus before Honda, just adjust @EconProf's code like so:

a <- subset(mtcars, mpg>30)
print(a[order(-a$mpg,-a$disp),])
#>                 mpg cyl disp  hp drat    wt  qsec vs am gear carb
#> Toyota Corolla 33.9   4 71.1  65 4.22 1.835 19.90  1  1    4    1
#> Fiat 128       32.4   4 78.7  66 4.08 2.200 19.47  1  1    4    1
#> Lotus Europa   30.4   4 95.1 113 3.77 1.513 16.90  1  1    5    2
#> Honda Civic    30.4   4 75.7  52 4.93 1.615 18.52  1  1    4    2

^{Created on 2022-08-28 by the reprex package (v2.0.1)}

But instead of asking such "basic" questions about filtering etc. in the forum, I think you would be better of to make use of the available introductions to R in the internet and start learning the basics. Good luck.

[14ish4]

Ohh got it thank you so much