Create a line of indices

Creates a vector of left-padded strings with indices in the indicated range.

index_line(from, to, by)

Arguments

from

[integer(1)]
First element of a sequence.

to

[integer(1)]
Last element of a sequence.

by

[integer(1)]
Size of a group and padding length.

Value

A vector of strings, each element being a number left-padded with spaces.