#include <iostream.h>
#include <fstream.h>          // for ifstream
#include "CPstring.h"
#include "prompt.h"
#include "matrix.h"

// file: charplot.cc
// author      Dietolf Ramm;  date: 11/7/96
// Plot in a char matrix

const int ROWS = 25;
const int COLS = 50;
const char PCHAR = '*';

void PlotData(Matrix<char> & plot, int rows, int cols)
// postcondition: plot contains a graphical representation of
//   the data read
{
   int x, y;
   string filename;

   ifstream pin;
   cout << "Name of file with data to plot: ";
   cin >> filename;
   pin.open(filename);
  
   while (pin >> x >> y)
   {
      plot[y][x] = PCHAR;
   }
}

void PrintPlot(Matrix<char> & plot, int rows, int cols)
{
   int r, c;
   cout << '+' ;
   for ( c = 0; c < cols; c++)
   {
      cout << '-';
   }
   cout << '+' << endl;
   for (r = rows - 1; r >= 0; r--)
   {
      cout << '|';
      for ( c = 0; c < cols; c++)
      {
         cout << plot[r][c];
      }
      cout << '|' << endl;
   }
   cout << '+' ;
   for ( c = 0; c < cols; c++)
   {
      cout << '-';
   }
   cout << '+' << endl;
}

int main()
{
   Matrix<char> plot(ROWS, COLS, ' ');

   PlotData(plot, ROWS, COLS);
   PrintPlot(plot, ROWS, COLS);

   return 0;
}

charplot

Name of file with data to plot: PlotData
+--------------------------------------------------+
|                                                  |
|                                                  |
|                                                  |
|                                                  |
|                                                  |
|                                                  |
|                           * *                    |
|                        *       *                 |
|                      *  *     *  *               |
|                     *             *              |
|            *****    *             *              |
|            *   *    *   *     *   *              |
|            *   *     *    ***    *               |
|            *****       *       *                 |
|                           * *                    |
|                                                  |
|                                                  |
|                                                  |
|                                                  |
|          *                                       |
|        *                                         |
|      *                                           |
|    *                                             |
|  *                                               |
|*                                                 |
+--------------------------------------------------+

cat PlotData
12 12 12 13 12 14
13 14 14 14 15 14 16 11
16 12 16 13 16 14
12 11 13 11 14 11 15 11

0  0 2  1 4  2 6  3 8  4 10  5

22 12 24 11 27 10 29 10 32 11 34 12
35 13 35 14 35 15 34 16 32 17 29 18
27 18 24 17 22 16 21 15 21 14 21 13

25 16 31 16
25 13 27 12 28 12 29 12 31 13