[Octave-bug-tracker] [bug #42022] dlmread: A(I,J): column index out of bounds; value 2 out of bound 1

[Philip Nienhuis]

Follow-up Comment #3, bug #42022 (project octave):

(Just intermediate result, I have had no time to dive into importdata.m again,
so here are just Matlab results)

Matlab r2016b gives:

>> dlmread ('bug42022.txt', '')
Error using dlmread (line 147)
Mismatch between file and format character vector.
Trouble reading 'Numeric' field from file (row number 1, field number 1) ==>
aaaa,11\n


Note that Matlab doesn't accept 'emptyvalue'. Specifying a comas as separator
makes no difference.

Octave-4.3.0+ does (specifying a comma as delimiter, ):

>> dlmread ("bug42022.txt", ",", 0, 1, "emptyvalue", NaN)
ans =

    11
   NaN
    33


which looks to be all right if not better than expected or Matlab (given that
dlmread cannot read non-numeric data).

Specifying an empty string (indicating dlmread should assess the delimiter
itself) gives:

>> dlmread ("bug42022.txt", "", 0, 1, "emptyvalue", NaN)
error: index (_,2): but object has size 6x1


so dlmread apparently has trouble finding out the separator character.


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