gusucode.com > bigdata 工具箱 matlab源码程序 > bigdata/@tall/nnz.m
function n = nnz(tv) %NNZ Number of nonzero matrix elements. % NZ = NNZ(TV) is the number of non-zero elements in TV. % Copyright 2015-2016 The MathWorks, Inc. tv = tall.validateType(tv, mfilename, {'~table'}, 1); n = aggregatefun(@nnz, @sum, tv); n.Adaptor = matlab.bigdata.internal.adaptors.getScalarDoubleAdaptor(); end