What I Do About This Error Plz?

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C++

for (int i = 0; i<num_models; i++) {
			model[i].clear();
			model[i].train(samples[i], Mat(), ps, NULL);

			cout << "Model " << i << " means: ";
			const CvMat* m = model[i].get_means();

error C2228: left of '.clear' must have class / struct / union
error C2678: '[' binary: no operator found which takes a left operand of type 'std :: vector' (or there is no acceptable conversion)
error C2228: left of '.train' must have class / struct / union

Posted 31-Oct-14 6:08am

mohamed sabri

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[no name] 31-Oct-14 12:14pm

Seems your Array of model Points not to the class you try to reference

mohamed sabri 31-Oct-14 12:16pm

i don't understant plz more

[no name] 31-Oct-14 12:21pm

what is the type of class which model[] holds? does this class/struct has e.g. a method clear()?

Sergey Alexandrovich Kryukov 31-Oct-14 14:38pm

Bruno meant to say that the object "model[i]" does exist, but it's type is nor class neither struct or union. Not only this type does not have the member "clear()"; it cannot have it, by the nature of this type.
You cannot expect "int obj = 3; obj.clear();" right? This is something like that.
—SA

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OriginalGriff · Answer 1 · 2014-10-31T06:22:00

Solution 1

Check the definition of your model variable - it isn't what you think it is, or at least VS doesn't think it is what you think it is!
Probably, it should be something along the lines of

C++

MyModelClass model[5];

Posted 31-Oct-14 6:22am

OriginalGriff