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Converts Excel column names to indices.
col2idx(x)
Character vector of Excel column names (e.g. "A", "AF", ...)
Returns a vector of integers representing the corresponding column indices. Note that passing invalid column name references may result in an arbitrary number.
idx2col, cref2idx, idx2cref, idx2aref, aref2idx, aref
idx2col
cref2idx
idx2cref
idx2aref
aref2idx
aref
# NOT RUN { col2idx(c("A", "BTG")) # }
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