public static double[][] dataOnArray(String fileName){
        writeFile file = new writeFile();
        double[][] data = new double[7][];
        x = 0;
        y = 0;

        try {
            fileScanner = new Scanner(new File(fileName));
        } catch (Exception e) {
            System.out.println(e.getMessage());
        }
        try{
            int i = 0;
            while (fileScanner.hasNextLine()) {

                i = 0;
                String line = fileScanner.nextLine();
                Scanner lineScann = fileScanner = new Scanner(line);
                String[] splited = line.split(" ");

                for(int j = 0 ; j < splited.length; j++){
                    data[i][j] = Double.parseDouble(splited[j]);
                }

                i++;
            }
        }
        catch (Exception e){
            System.out.println("error => " + e.getMessage());
        }
        fileScanner.close();

        return data;
    }