dpb
Posts:
6,693
Registered:
6/7/07
|
|
Re: Insert row in an array and delete last row
Posted:
Jan 20, 2013 2:17 PM
|
|
On 1/20/2013 11:11 AM, Michael Doukas wrote:
> "Michael Doukas" wrote in message
> <kdh748$a5g$1@newscl01ah.mathworks.com>...
>> I have the following code (it is for a Tabu search algorithm):
>>
>> 1: InitialSol=generator;
2: lsol=size(InitialSol,2);
>> 3: List=zeros(l,lsol);
>> 4: i=0;
>> 5:
6: while i<=l
>> 8: Sol=tweak(InitialSol);
>> 9: % check if tweaked child already exists in the tabu list
>> 10: if ismember(Sol,List)==0
>> 12: List=circshift(List,1);
13: List(i,:)=Sol;
>> 14: i=i+1;
>> 15: end
>> 16: end
>> But it reaches line 13 and throws:
>> Subscript indices must either be real positive integers or logicals.
...
Quite a few problems here...
The immediate problem is that you initialized i to zero and so the first
time there's a new entry added the subscript for L(i,:) is L(0,:).
Either initialize i=1; or move the increment to be before the first usage.
But, the ismember() usage isn't right, anyway...remember the 'rows'
optional argument? Plus, it returns a logical array which will be T iff
each member is T. If the idea is to not have any duplicates in L, then
if ~any(ismember(Sol,List,'rows')
doc any
doc equal
--
|
|
