on an old script, I had a line of code:
harris_residential_hmgpmatch <- subset(harris_residential_hmgpmatch, ID %!in% selecting_good$ID) #357
I need to rerun this script now, but the %!in% is no longer working:
Error in ID %!in% selecting_good$ID : could not find function "%!in%"
I have updated R since I initially wrote and ran this script - could that be the culprit, or am I missing something simple?