using datastore does not generate exact data files (extra rows or rows missing)

1 次查看（过去 30 天）
minomi
minomi 2019-1-14
Hi there,
I have been trying to use datastore and apply it to the file attached (the file is an extracted section of one of our data files). The script I use to set up the datastore setting is as follows:
ds = datastore(data_file_loc_ds);
ds.ReadSize = 1000000;
ds.NumHeaderLines = 0;
ds.Delimiter = {'\t',' '};
% ds.Whitespace = {' \b\t'};
ds.MultipleDelimitersAsOne = 1;
ds.CommentStyle = {'%'}
ds.TreatAsMissing = {'-1.#IO'};
ds.TextscanFormats = {'%{dd/MM/yyyy}D','%{HH:mm:ss}D',...
'%f','%f','%f','%f','%f','%f','%f','%f','%f','%f',...
'%f','%f','%f','%f','%f','%f','%f','%f','%f','%f',...
'%f','%f','%f','%f','%f','%f','%f','%f','%f','%f',...
'%f','%f','%f','%f','%f','%f','%f','%f','%f','%f',...
'%f','%f','%f','%f','%f','%f','%f','%f','%f','%f',...
'%f','%f','%f','%f',' %f','%f','%f','%f','%f','%f',...
'%f','%f','%f','%f','%f','%f','%f','%f','%f','%f',...
'%f','%f','%f','%f','%f','%f','%f','%f','%f','%f',...
'%f','%f','%f','%f','%f','%f','%f','%f','%f','%f',...
'%f','%f','%f','%f','%f','%f','%f','%f','%f','%f',...
'%f','%f','%f','%f'};
ds.ReadVariableNames = 1;
ds.VariableNames(1:2) = {'date','time'};
preview(ds)
The created datastore seems to do different things for slightly different files. It generally tends to skip the first row (or a few) of the files. At times it repeats a section of the data file and hence for instance I end up with several extra files and sometimes it skips rows. I have been trying different combinations of the "TabularTextDatastore" properties to get the rows exactly as they are but it seems to be impossible.

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