gusucode.com > datatypes 工具箱matlab源码程序 > datatypes/@categorical/isundefined.m
function tf = isundefined(a) %ISUNDEFINED True for elements of a categorical array that are undefined. % TF = ISUNDEFINED(A) returns a logical array the same size as the categorical % array A, containing logical 1 (true) where the corresponding element of A is % undefined, i.e., does not have a value from one of the categories in A, % and logical 0 (false) otherwise. % % See also ISMEMBER. % Copyright 2006-2013 The MathWorks, Inc. tf = (a.codes == 0);