Description Usage Arguments Examples
This function produces centered and/or standardized variables for long format dataframes. Merged must=TRUE for now.
1  | 
df | 
 dataframe  | 
vars | 
 character vector of variables to be transformed  | 
id | 
 Name of grouping variable.  | 
outtype | 
 standardized (std), centered (cent), or both (both)  | 
merged | 
 specifies whether output is merged dataset or just selected transformations (in a dataframe): MUST BE TRUE FOR zcentlong.  | 
1  | zcent()
 | 
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