Hello. I am fairly new to R/ am not what I would call an advanced user by any stretch. Having said that, I'm simply trying to read in my .csv, convert a couple columns to factors, build a linear model where ED depends on Body + Season + Lat, and run a stepwise AIC on this model.
I got it to work just a few minutes ago, went back to my R studio console, re-ran the exact same things without changing ANYTHING whatsoever, and now am getting the error message "Invalid input, please try again." I tried re-setting my working directory, re-installing packages, and re-running each line of code, to no avail.
PLEASE HELP! as this is for my Master's thesis and I'm on a tight schedule.
Thank you so much