FileStorage Capabilities

[fdncred]

Summary of your issue

I can't figure out how to duplicate this FileStorage example. Is there a way?
https://docs.opencv.org/master/d6/d03/filestorage_8cpp-example.html

These are the specific sections that I'm interested in.

//write
  {
    FileStorage fs(filename, FileStorage::WRITE);
    cout << "writing images\n";
    fs << "images" << "[";
    fs << "image1.jpg" << "myfi.png" << "../data/baboon.jpg";
    cout << "image1.jpg" << " myfi.png" << " ../data/baboon.jpg" << endl;
    fs << "]";
    cout << "writing mats\n";
    Mat R =Mat_<double>::eye(3, 3),T = Mat_<double>::zeros(3, 1);
    cout << "R = " << R << "\n";
    cout << "T = " << T << "\n";
    fs << "R" << R;
    fs << "T" << T;
    cout << "writing MyData struct\n";
    MyData m(1);
    fs << "mdata" << m;
    cout << m << endl;
  }
  //read
  {
    FileStorage fs(filename, FileStorage::READ);
    if (!fs.isOpened())
    {
      cerr << "failed to open " << filename << endl;
      help(av);
      return 1;
    }
    FileNode n = fs["images"];
    if (n.type() != FileNode::SEQ)
    {
      cerr << "images is not a sequence! FAIL" << endl;
      return 1;
    }
    cout << "reading images\n";
    FileNodeIterator it = n.begin(), it_end = n.end();
    for (; it != it_end; ++it)
    {
      cout << (string)*it << "\n";
    }
    Mat R, T;
    cout << "reading R and T" << endl;
    fs["R"] >> R;
    fs["T"] >> T;
    cout << "R = " << R << "\n";
    cout << "T = " << T << endl;
    MyData m;
    fs["mdata"] >> m;
    cout << "read mdata\n";
    cout << m << endl;
    cout << "attempting to read mdata_b\n";   //Show default behavior for empty matrix
    fs["mdata_b"] >> m;
    cout << "read mdata_b\n";
    cout << m << endl;
  }

[shimat]

I am sorry for the late reply 🙇

This will be fixed by #484 except custom struct support.
https://github.com/shimat/opencvsharp/blob/57e4b58230abd504fb0ca0913e9cb7643d5fc78b/test/OpenCvSharp.Tests/core/FileStorageTest.cs