I have this example of adding a new table attribute(IMCmod) that tells you if the variable IMD is lesser than 22 in one of the pdfs in my class:

TE<-data.frame(TE,IMCmod=recode(TE$IMC,"lo:22=1;else=0"))

So, my question is does the lo: mean ¨lesser than¨ and if it does, what's the codeword for ¨greater than¨

PD: I feel like it's a dumb question to ask here, but I haven't been able to find it anywhere, so please bear with me.

CodePudding user response：

If you're using the recode function from the car package, lo stands for the lowest value of the variable, so "lo:22=1;else=0" means "all values from the lowest to 22 are recoded to 1; others are recoded to 0".

Note that x:y means the entire range from x to y, it's not the sequence operator as in R code, so 3.1415 would be included as long as the lowest value was smaller.

You can use hi for the highest value.

For more details, see ?recode.