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Image analysis program: 'find' not working

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SreeHarish Muppirisetty
testnumber=2;
vectortofindtestnumber=[ 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 19 20
];
checkiftestelementhasduplicatesinthevector=find(testnumber==vectortofindtestnumber);
if(length(checkiftestelementhasduplicatesinthevector)>1)
disp('Found a duplicate'); % Do some steps
end
for '2' my code in my image analysis program is going into if condition and is getting processed.
I feel definitely this is a run-time bug, but any similar experiences any of you can share would be helpful.
Any help would be appreciated.
Thanks in advance

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回答（2 个）

Walter Roberson
Walter Roberson 2013-8-27
You do not show any "else" after the length check, and your "Do some steps" does not show any action to avoid doing the code that is after the "if". Remember, if you have an "if" then that does not mean skip all the rest of the program if the condition is false: it means that if the condition is false, skip only what is in the "if" block.
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Walter Roberson
Walter Roberson 2013-8-28
When you say "from command line" compared to "while executing the program", what do we need to know about how you are executing the program? Did you write it to a .m file and are giving the name of the .m file? If so then have you checked with "which" to be sure you are executing the correct .m file ? Did you add anything else to that file?
SreeHarish Muppirisetty
SreeHarish Muppirisetty 2013-8-28
Hi The demarcation I made 'from command line' and 'while executing the program' is premature on my part..to say..now that I figured out that the variables on which my program is working have different data to what I expected. It's my logical misunderstanding, apologies for the waste of time.
Image Analyst
Image Analyst 2013-8-27
编辑：Image Analyst 2013-8-27
Why not simply use ismember:
% Define the large list to search.
vectorToCompare=[1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20];
% Define the numbers to look for in the larger list.
testnumber= [2 2 5 42];
[hits, indexes] = ismember(testnumber, vectorToCompare)
if any(hits)
message = sprintf('%d numbers found.', sum(hits));
else
message = sprtinf('No numbers found.');
end
msgbox(message);
P.S. How does this have to do with image analysis?
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SreeHarish Muppirisetty
SreeHarish Muppirisetty 2013-8-28
编辑：Walter Roberson 2013-8-28
Hi
Yes, it did work. But I am afraid that the data structure (vector in the program mentioned) my program is working on is quite different. The error I quoted is a result of my logical gap in understanding what my program is processing. Thank you

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