Open a raster and fill with values

The following example is a simple case of opening a raster dataset and calculating the average value of all cells.

// example_2.cpp
#include <pronto/raster/io.h>
#include <iostream>

namespace pr = pronto::raster;

int main()
{
  auto raster = pr::open<int>("demo.tif"); // assuming file exists and is valid
  int sum = 0;
  for (auto&& value : raster) {
    sum += value;
  }
  std::cout << "Mean value: " << static_cast<double>(sum) / raster.size() << std::endl;
 
  return 0;
}

Output (depending on contents of “demo.tif”; here using file generated in example_1 ):

Mean value: 3.24