Category : indexing

I am trying to scale an image up or down by a real-valued factor using nearest pixel sampling. However, I have met with an unexpected index out of range when I compile it. Can anyone help me check my code related to this issue? Image32 Image32::scaleNearest( double scaleFactor ) const { Image32 Image = Image32(); ..

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Say I had the following: //typedef Eigen::Matrix<double, Eigen::Dynamic, Eigen::Dynamic, Eigen::ColMajor> CMatrix; //typedef Eigen::Array<bool, 1, Eigen::Dynamic> BoolVector; CMatrix X0 = CMatrix::Random(5, 3); BoolVector missing = BoolVector::Constant(3, true); missing[1] = false; CMatrix X1 = X0(Eigen::all, !(missing)); std::cout << "X0 =n" << X0 << std::endl; std::cout << "X1 =n" << X1 << std::endl; Basically, I would like to ..

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I’m trying to iterate through an array (vector) and replace the value "num" with the appropriate vector index. For instance, if the number is 2, the for loop should iterate over until it matches the index of the vector std::vector<int> uniqueNumsLength(uniqueNumbers);, and finally it increments the appropriate index: uniqueNumsLength[num]++;. The problem I’m having is that ..

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