readtable bug - if file has only one line, then readtable throws error ONLY if ReadRowNames = 1

Consider a tab-delimited file with only a header line (no data otherwise)

e.g.

m.txt:

name<tab>age

Then

readtable('m.txt', 'FileType', 'text', 'Delimiter', '\t', 'ReadVariableNames', 1 , 'ReadRowNames', 0)

returns an empty table, like it is supposed to.

However

readtable('m.txt', 'FileType', 'text', 'Delimiter', '\t', 'ReadVariableNames', 1 , 'ReadRowNames', 1)

throws an error.

[dpb]

Bug reports to www.mathworks.com Meanwhile, if this is an issue, a workaround would be try...catch around the call...

Answer 1

[Peter Perkins]

cmo, you are correct, thank you for finding this bug. I will make a note to have it fixed. For the time being, you can read in the file with ReadRowNames set to false, and then assign the row names and delete the string variable.

[Burton Filstrup]

Still broken in MATLAB 2022a.