dftest {rgr} | R Documentation |
A utility function to determine if a data frame is attached, or exists in the working directory. If the data frame exists the names of the variables are displayed.
dftest(dfname, x = NULL)
dfname |
name of a data frame. |
x |
setting x to an expected variable name in the data frame results in the variable's length, i.e., number of observations, being displayed if it is present. |
Based on a function shared on S-News.
Unkown
## Make test data available data(kola.o) ## Check that the data frame kola.o is available dftest(kola.o) ## Check that kola.o is available and that the variable Cu is present dftest(kola.o, x = Cu)