Question

How to define arrays in C++/ Open CV as I do in matlab ?

for example:

x=a:b:c;

or

y=linspace(a,b,n);

Answer 1

Refer the previous answers for general answers to your question.

Specifically, to address the two examples that you mention, here is some equivalent c++ code using vectors for dynamically generating the arrays you mentioned (haven’t tested):

#include <vector>
using std::vector;

vector<double> generateRange(double a, double b, double c) {
    vector<double> array;
    while(a <= c) {
        array.push_back(a);
        a += b;         // could recode to better handle rounding errors
    }
    return array;
}

vector<double> linspace(double a, double b, int n) {
    vector<double> array;
    double step = (b-a) / (n-1);

    while(a <= b) {
        array.push_back(a);
        a += step;           // could recode to better handle rounding errors
    }
    return array;
}