find rows where the variable “back” is greater than 100

Question

The question is write the code to provide the rows where the variable “back” is greater than 100.I am a new for the R,now I only use x<-read.csv('data.csv',header = TRUE) to load the excel, just want to know how to find rows which value more than 100

Answer 1

Create a logical vector with the comparison operator ( > ), get the positions by wrapping with which and if we need to include the column names as index 1, then concatenate 1 and add 1 to the index we got with which

c(1, which(x$back > 100) + 1)