Im trying to append survey data sets of different versions of the survey to create a master file. But, the different survey versions do not have uniform number of columns across. ( E.g : V1 - 10k vars, V2- 20k vars). I would like to see what are the 10k missing vars in V1 in comparison to V2.
Is there a R function which could print & export the colnames of the data to excel?
Thank you.