non-looping way to compare cellstr arrays of different sizes

1 次查看(过去 30 天)
Suppose A = {'aa', 'kk', 'ccc'}, B = {'aa', 'bb', 'cc', 'dd', 'ee'}.
Is there a not-explicitly-looping way to return a logical array the same size as A that is 1 where an element of A is in B, 0 where it is not, e.g.,
"whereMember"(A,B) => [1 0 0]?
Thanks!

采纳的回答

Oleg Komarov
Oleg Komarov 2011-8-24
A = {'aa', 'kk', 'ccc'};
B = {'aa', 'bb', 'cc', 'dd', 'ee'};
ismember(A,B)
  4 个评论
David Goldsmith
David Goldsmith 2011-8-24
DOH! again. (But shouldn't that be ismember(lower(A),lower(B)) - I want it to be "commutatively" case insensitive.) :-)
Thanks one more time!

请先登录,再进行评论。

更多回答(1 个)

David Goldsmith
David Goldsmith 2011-8-24
Here's a little function that does if the answer to the revised question is "no":
function la = cellstrIsMember(A, B, i)
% la = 1 where the elements of cellstr array A are in cellstr array B, 0 where they are not
% i is an optional parameter: if case matters, i=1 (the default),
% 0 for case-insensitive matching (which is slower)
%
% Author: David Goldsmith, Wash. State Dept. of Ecology, dgol461@ecy.wa.gov
% Release date: 2011-08-24
if nargin < 3
i = 1;
end
if i || isempty(A) || isempty(B)
la = ismember(A, B);
else
la = zeros(size(A));
for i=1:length(A)
if any(strcmpi(A{i}, B))
la(i) = 1;
end
end
end
end
  7 个评论
David Goldsmith
David Goldsmith 2011-8-25
Jan: may I credit you in my by-line comment? If yes, what is your affiliation, if any?
Jan
Jan 2011-8-25
@David: I've tried to let leo.org tell me, what affiliation is. Leo meant, that either somebody adopts me, or that it concerns my fatherhood. :-) If this means my company: I'm a freelancer. Perhaps my FEX author ID 15233 is helpful?

请先登录,再进行评论。

类别

Help CenterFile Exchange 中查找有关 Characters and Strings 的更多信息

产品

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by