www.gusucode.com > bigdata 工具箱 matlab源码程序 > bigdata/@tall/classUnderlying.m
function c = classUnderlying(t) %classUnderlying Class of underlying data in tall array. % C = classUnderlying(T) returns the class of the underlying data in tall % array T. C is a tall array containing a character vector. Use GATHER(C) % to collect the result into the MATLAB client session. % % Example: % t = tall(rand(1,4)); % c = classUnderlying(t) % % See also: TALL, tall/isaUnderlying. % Copyright 2016 The MathWorks, Inc. if isempty(t.Adaptor.Class) % Because CLASS returns a char-vector, we need to place it in a cell, and ask % getArrayMetadata to unpick it. classAsCellFcn = @(x) {class(x)}; unpickCell = true; c = getArrayMetadata(t, classAsCellFcn, unpickCell); c.Adaptor = setKnownSize(matlab.bigdata.internal.adaptors.getAdaptorForType('char'), ... [1, NaN]); else % We can simply form an already-gathered result. c = tall.createGathered(t.Adaptor.Class, getExecutor(t)); end end