fixnames: standardize column names for a dataframe
In johnfrye/fryeR:

standardize column names for a dataframe

1	fixnames(df)

`df`	dataframe whose colnames you want to standardize

# Handling of periods in names:
# Assume that a period should be replaced by an underscore
# to preserve whatever separation of words was intended
# by the original inclusion of periods,  Don't
# want to simply remove them, but they're inconvenient.
# Replace periods with an underscore:
df <- mtcars
head(df)
names(df) <- paste0("_.", names(df), ")")
head(df)
names(df) <- fixnames(df)
head(df)
df