www.gusucode.com > bigdata 工具箱 matlab源码程序 > bigdata/@tall/char.m
function s = char(x, varargin) %CHAR Create character array (string). % Supported syntax: % S = CHAR(X) % % Restrictions: % X must be a tall numeric column vector. % % Use CELLSTR to convert tall arrays of datetime to tall cell arrays of % character vectors. % % See also char, tall/cellstr, tall. % Copyright 2016 The MathWorks, Inc. % We do not support the multiple input syntax for converting multiple char % vectors into a char matrix. if nargin > 1 error(message('MATLAB:bigdata:array:CharMultipleInputsNotSupported')); end % Because we want to throw several different errors here, we can't use the % normal lazyValidate pattern. s = elementfun(@iCharWithCheck, x); s.Adaptor = matlab.bigdata.internal.adaptors.getAdaptorForType('char'); end %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% function out = iCharWithCheck(in) if isdatetime(in) || isduration(in) || iscalendarduration(in) ... || iscategorical(in) || isstring(in) error(message('MATLAB:bigdata:array:CharUseCellstr', class(in))); elseif ~isnumeric(in) || ~iscolumn(in) error(message('MATLAB:bigdata:array:CharNumericColumn')); end out = char(in); end