win_vis_data.cpp

/*
*
* Super Duper Copyright by Jul Foi, do not cropy
*/


// win_visdata.cpp : Definiert den Einstiegspunkt für die Konsolenanwendung.
//

#include "stdafx.h"


#include <algorithm>
#include <iostream>
#include <string>
#include <sstream>
#include <fstream>
#include "CImg-1.5.3/CImg.h"

using namespace std;
using namespace cimg_library;

enum Country
{
    Australia,
    Canada,
    Czech_Rep,
    Estonia,
    Finland,
    France,
    Germany,
    Hong_Kong_China,
    Ireland,
    Japan,
    Korea_Rep,
    Latvia,
    Lithuania,
    Netherlands,
    New_Zealand,
    Norway,
    Philippines,
    Poland,
    Portugal,
    Romania,
    Singapore,
    Slovak_Republic,
    Slovenia,
    Spain,
    Sweden,
    Switzerland,
    Turkey,
    United_Kingdom,
    United_States
};

struct CountryData
{
    //Country id;
    int id;
    float* rate; // rate[YEAR] = data_entry;
};

struct CSVTable
{
    string title;
    int start_year;
    int end_year;
    CountryData* data;
};

/*Country getCountry(string s_country)
{

}*/

int main()
{
    ifstream fs_datafile;
    string line;
    int c = 0;
    int abs_rows;

    fs_datafile.open("data.csv");

    if(fs_datafile.is_open())
    {
        abs_rows = std::count(std::istreambuf_iterator<char>(fs_datafile),
             std::istreambuf_iterator<char>(), '\n');
        cout << "abs_rows: " << abs_rows << endl;
    }
    else
    {
        cout << "Could not determine file size, will exit now..." << endl;
        return 0;
    }

    fs_datafile.close();
    fs_datafile.open("data.csv");

    if(fs_datafile.is_open())
    {
        CSVTable* table = new CSVTable;
        table->title = "Unemployment Rate";
        table->start_year = 0;
        table->end_year = 0;
        table->data = new CountryData[abs_rows];

  	CImg<float> A(24, abs_rows-1, 1, 1, 0);

        int row = 0, column = 0;

        while(fs_datafile.good())
        {
            //if(c > 3)
              //  break;
            if(getline(fs_datafile, line))
            {
                //cout << line << endl << endl;
                cout << "row: " << row << endl;

                stringstream sstream(line);
                string value = "";

                //int year = 1;
                if(row == 0)
                {
                    while(getline(sstream, value, ';'))
                    {
                        //float f_rate = 0.0f;
                        switch(column)
                        {
                            case 0:
                                table->title = value;
                                break;
                            default:
                                if(table->start_year == 0)
                                {
                                    istringstream(value) >> table->start_year;
                                    istringstream(value) >> table->end_year;
                                }
                                else
                                {
                                    table->end_year++;
                                }
                                break;
                        }
                        cout << "(f)" << value << "(" << column << ")" << endl;
                        column++;
                    }
                }
                else
                {
                    CountryData* ctry = new CountryData;
                    ctry->rate = new float[table->end_year-table->start_year];
                    while(getline(sstream, value, ';'))
                    {
                        if(column == 0)
                        {
                            cout << "Country: " << value << "(" << column << ")" << endl;
                            ctry->id = row-1;
                        }
                        else
                        {
                            float f_rate = 0.0f;
                            istringstream(value) >> f_rate;
                            ctry->rate[column-1] = f_rate;
							
							A(column-1, row-1) = f_rate;

                            cout << f_rate << "(" << column << ")" << endl;
                        }
                        column++;
                    }
                    table->data[row-1] = *ctry;
                }
            }

            c++;
            row++;
            column = 0;
        }

        int data_entries = abs_rows-1;

        cout << endl << endl << endl;
        cout << "----------------------------------------------" << endl;
        cout << "Title: \t" << table->title << endl;
        cout << "Starting year: \t" << table->start_year << endl;
        cout << "Ending year: \t" << table->end_year << endl;
        cout << "Data Entries: \t" << data_entries << endl;
        cout << "----------------------------------------------" << endl;
        cout << endl << endl << endl;
        cout << "id: " << table->data[0].id << " rate " << table->data[0].rate[5] << endl;

         // A = U'*S*V
		//A.display();
        CImgList<float> USV = A.get_SVD(); //USV[0] = U and so forth
		
        cout << *USV[0] << " * " << *USV[1] << " * " << *USV[2] << endl;
		CImgDisplay disp(500, 500);
		CImgDisplay disp2(500, 500);
		CImgDisplay disp3(500, 500);

		disp.display(USV[0]);
		disp2.display(USV[1]);
		disp3.display(USV[2]);

		//USV[2].display(disp);

		string abc;
		cin >> abc;
        delete table;
    }

    return 0;
}