R studio not running the code

RStudio IDE
1

This code is not getting executed either in R editor or R console, any guidance is appreciated

data("airquality")
View(airquality)
ozone_level <- airquality[1,"Ozone"]
if is.na(ozone_level)
{print("ozone_level reading is missing.")}
else if (ozone_level<30){
print("low ozone level.")
} else{}
print("high ozone level.")}

1 Like
2

Try this

data("airquality")
View(airquality)
ozone_level <- airquality[1,"Ozone"]
 is.na(ozone_level)
{print("ozone_level reading is missing.")}
if (ozone_level<30){
print("low ozone level.")
} else{
print("high ozone level.")}

You had an extra } in there and I don't think you can do an if() at the start of the expression with an is'na.

3

I think you meant to write:

if (is.na(ozone_level)) {
  print("ozone_level reading is missing.")
} else {
  if (ozone_level < 30) {
    print("low ozone level.")
  } else {
    print("high ozone level.")
  }
}
1 Like
4

Thanks for the help, I ran your code and I get this error - unexpected '}' in " print("high ozone level.")}" unable to figure where is the additional {

5

This code works, I did not know the entire else will be nested till the end. Was that the error? or something else. Thanks for your help.

1 Like
6

Your if statement syntax is incorrect. It should be:

data("airquality")  
View(airquality)  
ozone_level <- airquality[1, "Ozone"]  

if (is.na(ozone_level)) {  
  print("ozone_level reading is missing.")  
} else if (ozone_level < 30) {  
  print("low ozone level.")  
} else {  
  print("high ozone level.")  
}

Fix the missing parentheses in if is.na(ozone_level), and remove the extra } at the end. This should run properly in both the R editor and console! :white_check_mark: