// Loop through the file's data one line at a time until it runs out of data/lines.
    while (std::getline(fileData, singleLine))
    {
        // Store each line as a stringstream.
        istringstream lineData(singleLine);

        // Each line has a known structure so use variables to grab the values from the line's stringstream.
        // Each line consists of: placeZ X Y, with X and Y being coordinate numbers and Z being the
        // place number.
        // E.g. place0 1234 5678.
        string placeName;
        double xPos;
        double yPos;

        lineData >> placeName;  // Grab the placename from the stream.
        lineData >> xPos;       // Grab the X coordinate from the stream.
        lineData >> yPos;       // Grab the Y coordinate from the stream.

        // Create a feature node with the recently collected data.
        PlaceNode* tempNode = new PlaceNode(placeName, xPos, yPos);