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From: Hans on 30 Dec 2009 06:49 Hi everybody Under I have copied the code for the function searchvec that search through a vector vec to find the value key. As an example vec=[15 10 7 8 98 8 3 8] and key=8. The function returns [4 6 8]. What I want is that key should be a vector instead of a scalar. As example vec=[15 10 7 8 98 8 3 8] and key=[15 8]. The function should return [1 4 6 8]. How can I change the function file. It must be a function. function [output]=searchvec(vec,key) len=length(vec); %index=[]; i=1; while i < len %&& vec(i)~=key i=i+1; if vec(i)==key index(i)={i}; end end output=cell2mat(index); Best Regards Hans
From: us on 30 Dec 2009 07:07 "Hans " <jyde_6(a)msn.com> wrote in message <hhfenf$j31$1(a)fred.mathworks.com>... > Hi everybody > > Under I have copied the code for the function searchvec that search through a vector vec to find the value key. > As an example vec=[15 10 7 8 98 8 3 8] and key=8. The function returns [4 6 8]. What I want is that key should be a vector instead of a scalar. As example vec=[15 10 7 8 98 8 3 8] and key=[15 8]. The function should return [1 4 6 8]. How can I change the function file. It must be a function. one of the many solutions v=[2,3,15,8,8,0,1,15]; k=[8,15]; r=find(ismember(v,k)) % r = 3 4 5 8 us
From: John D'Errico on 30 Dec 2009 07:08 "Hans " <jyde_6(a)msn.com> wrote in message <hhfenf$j31$1(a)fred.mathworks.com>... > Hi everybody > > Under I have copied the code for the function searchvec that search through a vector vec to find the value key. > As an example vec=[15 10 7 8 98 8 3 8] and key=8. The function returns [4 6 8]. What I want is that key should be a vector instead of a scalar. As example vec=[15 10 7 8 98 8 3 8] and key=[15 8]. The function should return [1 4 6 8]. How can I change the function file. It must be a function. > help ismember HTH, John
From: Hans on 30 Dec 2009 07:15 "John D'Errico" <woodchips(a)rochester.rr.com> wrote in message <hhffr3$sd2$1(a)fred.mathworks.com>... > "Hans " <jyde_6(a)msn.com> wrote in message <hhfenf$j31$1(a)fred.mathworks.com>... > > Hi everybody > > > > Under I have copied the code for the function searchvec that search through a vector vec to find the value key. > > As an example vec=[15 10 7 8 98 8 3 8] and key=8. The function returns [4 6 8]. What I want is that key should be a vector instead of a scalar. As example vec=[15 10 7 8 98 8 3 8] and key=[15 8]. The function should return [1 4 6 8]. How can I change the function file. It must be a function. > > > > help ismember > > HTH, > John Dear John I have found a solution. function [output]=smartseqsearch(vec,key) len=length(vec); %index=[]; i=1; while i < len %&& vec(i)~=key i=i+1; for j=1:length(key) if vec(i)==key(j) index(i)={i}; end end end output=cell2mat(index); I will look at the function ismember to see if I can optimise my code. Best Regards Hans
From: Hans on 30 Dec 2009 07:19
"us " <us(a)neurol.unizh.ch> wrote in message <hhffp7$ot9$1(a)fred.mathworks.com>... > "Hans " <jyde_6(a)msn.com> wrote in message <hhfenf$j31$1(a)fred.mathworks.com>... > > Hi everybody > > > > Under I have copied the code for the function searchvec that search through a vector vec to find the value key. > > As an example vec=[15 10 7 8 98 8 3 8] and key=8. The function returns [4 6 8]. What I want is that key should be a vector instead of a scalar. As example vec=[15 10 7 8 98 8 3 8] and key=[15 8]. The function should return [1 4 6 8]. How can I change the function file. It must be a function. > > one of the many solutions > > v=[2,3,15,8,8,0,1,15]; > k=[8,15]; > r=find(ismember(v,k)) > % r = 3 4 5 8 > > us Thank you very much US. I will try the ismember and use the tic toc to see what is fastest. Best Regards Hans |