Dunno...would seem there's either
- something in the file that's confusing textscan 's row count or
- there is an actual bug/limitation inside textscan
csvread is just a wrapper to dlmread which in turn simply parses the inputs and calls textscan. For a .csv file, the call boils down to
delimiter = sprintf(delimiter);
whitespace = setdiff(sprintf(' \b\t'),delimiter);
result = textscan(fid,'',nrows, ...
'delimiter',delimiter,'whitespace',whitespace, ...
'headerlines',r,'headercolumns',c,...
'returnonerror',0,'emptyvalue',0,'CollectOutput', true);
where, of course, delimiter is ','.
The "magic" occurs inside textscan as you notice there is no explicit format string but an empty string placeholder--this is the cue used internally instructing it to return the array shape as the record structure appears externally without the user having to count fields and build a format string.
Since we can't see inside textscan, this is as far as we can go.
You could try building a test file and parsing it and seeing if you can replicate the problems at a specific record length or, on the way, perhaps determine that file works correctly and the fault is in this data file.
