any example?

[3togo]

Any simple example?

[HunterBelanger]

Hello !

Yes, I really need to get around to putting a few brief examples into the readme. I only really use this class for storing multi-dimensional data, or for writing data to .npy files to then be used in Python after. For example, if you have N points each with an x, y, and z coordinate I would do something like:

#include<ndarray.hpp>
#include <vector>

struct Point {
    double x, y, z;
}

const std::vector<Point>& get_points();

int main() {

    const std::vector<Point>& points = get_points();
    // The {points.size(), 3} is initialized to an
    // std::vector<std::size_t> which is the shape of the array.
    NDarray<double> points_out({points.size(), 3});

    for (std::size_t i = 0; i < points.size(); i++) {
        points_out(i, 0) = points[i].x;
        points_out(i, 1) = points[i].y;
        points_out(i, 2) = points[i].z;
    }

    // You can then save your data
    points_out.save("points.npy");

    return 0;
}

You could store the Point objects directly in the NDarray if you only need them in C++. The problem is the Point objects can't be written to the Numpy file directly, as this wouldn't be understood in Python.

I hope this helps ! I will try to added a few more examples to the readme in a few days.