Path: news.mathworks.com!not-for-mail From: <HIDDEN> Newsgroups: comp.soft-sys.matlab Subject: Re: find complementary values Date: Mon, 20 Sep 2010 15:40:05 +0000 (UTC) Organization: The Mitre Corp Lines: 33 Message-ID: <i77v8l$546$1@fred.mathworks.com> References: <i77trk$2ih$1@fred.mathworks.com> <i77ume$q87$1@fred.mathworks.com> Reply-To: <HIDDEN> NNTP-Posting-Host: webapp-02-blr.mathworks.com Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Trace: fred.mathworks.com 1284997205 5254 172.30.248.37 (20 Sep 2010 15:40:05 GMT) X-Complaints-To: news@mathworks.com NNTP-Posting-Date: Mon, 20 Sep 2010 15:40:05 +0000 (UTC) X-Newsreader: MATLAB Central Newsreader 2318 Xref: news.mathworks.com comp.soft-sys.matlab:671569 "Wayne King" <wmkingty@gmail.com> wrote in message <i77ume$q87$1@fred.mathworks.com>... > "Norman " <nteferle@gmail.com> wrote in message <i77trk$2ih$1@fred.mathworks.com>... > > This may be quite simple but I seem to have a brain block. arrgh. > > > > I have a matrix of with numbers in the range between 1 and 100. The matrix does not contain all values between 1 and 100 and for some numbers there might be multiple instances. For example 0, 10, 11, 11, 15, ..., and 89. > > > > Is there a(n) (elegant) way to find those numbers between 1 and 100 that are not represented in the matrix? i.e., 1-9, 12-14, ...,90-100. > > > > Any help is welcome. > > > > Cheers, > > Norman > > Hi Norman, > > help setdiff > > B = randsample(100,100,true); % requires Statistics Toolbox > % samples 100 values with replacement from 1:100 > C = setdiff(1:100,B); > > Wayne % I don't think setdiff works the way you think it does: >> A = [0, 10, 11, 11, 15, 89]; >> B = 0:100; >> c = setdiff(A, B) c = Empty matrix: 1-by-0