Subscripted assignment dimension mismatch.

Hi all i am using the fallowing code for the svm classification

svmstruct=svmtrain(PosNegF,group); for l=1:999

                       abc= svmclassify(svmstruct, DB1(l,:)) 

                       Fset(l,:) =[ l,abc];
end
here DB is the Feature matrix of the 999 images.

Now when first time i execute this code it work fine, but when next time i train the SVM and then run again this code it give the Subscripted assignment dimension mismatch. error. please help me. Thanks in advance

Because, the result or data (svmstruct) will be stored in workspace. To avoid this, you can do with command before this by adding 'clear svmstruct'.

i try clear svmstruct but still the error is same. please help me..

At every iteration of loop svmclassify return 1 or 0 only.

then why it giving the dimension mismatch error. even same for the first time.

Answer 1

execute the command dbstop if error at the command line. Then rerun your code. When the error occurs and you get the K>> prompt, check the value/sizes of abc and F.