headcount(file_name​, header_mark)

version (1.75 KB) by Naor Movshovitz
Return number of header lines in text file.


Updated 16 Apr 2019

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Many file-reading functions allow the user to specify a number of header lines to skip before reading in data. To facilitate reading from files with an unknown or varying number of header lines, this function opens a text file, counts the number of lines in the header block (defined by a header mark; default is '#''), and (always!) closes the file. This makes it easy to read in data with a single call.
For example:
raw = importdata(my_csv_file, ',', headcount(my_csv_file, '%'));
reads a csv table, automatically skipping lines starting with '%' in the beginning of the file. (Note: it is true that importdata(my_file) will try to infer delimiters and headers automatically, but it will often fail.)

Cite As

Naor Movshovitz (2022). headcount(file_name, header_mark) (https://www.mathworks.com/matlabcentral/fileexchange/48481-headcount-file_name-header_mark), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2011b
Compatible with any release
Platform Compatibility
Windows macOS Linux
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