www.gusucode.com > datastoreio工具箱 matlab源码程序 > datastoreio/+matlab/+io/+datastore/@TallDatastore/reset.m
function reset(tds) %RESET Reset the TallDatastore to the start of the data. % RESET(TDS) resets TDS to the beginning of the datastore. % % Example: % -------- % % Create a simple tall double. % t = tall(rand(500,1)) % % Write to a new folder. % newFolder = fullfile(pwd, 'myTest'); % write(newFolder, t) % % Create an TallDatastore from newFolder % tds = datastore(newFolder) % % read 3 data rows at a time % tds.ReadSize = 3 % while hasdata(tds) % a3 = read(tds) % end % % Reset to the beginning of the datastore % RESET(tds) % a3 = read(tds) % % See also matlab.io.datastore.TallDatastore, read, readall, hasdata, preview % Copyright 2016 The MathWorks, Inc. try if ~isempty(tds.Splitter) && isvalid(tds.Splitter) && ... tds.Splitter.NumSplits ~= 0 tds.SplitIdx = 1; setSplitsWithValuesOnly(tds.Splitter, true); if ~isempty(tds.SplitReader) && isvalid(tds.SplitReader) tds.SplitReader.Split = tds.Splitter.Splits(tds.SplitIdx); else tds.SplitReader = createReader(tds.Splitter, tds.SplitIdx); end reset(tds.SplitReader); end catch ME throw(ME); end end