Extract a dataframe (a tibble::tibble()) from a character vector

Function to a dataframe (a tibble::tibble()) from a character vector.

Usage

extractDataframe(txt, n, start, comment = "#")

Arguments

txt

• character vector to search

n

• number of non-comment lines to extract

start

• index into txt to regard as the start of the search

comment

• character indicating the following text in the string is a comment

Value

list with elements txt and end (see details)

Details

Each element in txt is regarded as a line of text (as in a text file). The dataframe structure and column types are determined by readr::read_table().

• txt - character vector of length n with comment lines removed (i.e., a subset of txt)

• end - index of the last element extracted in the input txt vector

This function differs from evalTextAsDataframe() in that the input character vector may be a much larger section of text than what defines the dataframe to be extracted, but the number of rows (n) to extract is known, as is the index of the element to begin with (start). In evalTextAsDataframe(), after comments are removed are removed from the input character vector char_vec, the resulting character vector is regarded as defining the dataframe.