read.excel.RdRead an excel file and return a data.frame without generating warnings.
read.excel(f, fix_names=FALSE, lower=FALSE, ...)character (filename)
logical. If TRUE variable names are made valid. Spaces and other characters such as parenthesis are replaced by a dot. Multiple dots are replaced by a single dot
logical. If TRUE, returned column names are all in lowercase
additional arguments passed on to read_excel
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data.frame