Coordinate axes in C#

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Hello
In pattern recognition using K-means algorithm I need to show the points before and after clustering in Coordinate axes
just like we do in math when we draw points
a second question: is Point class in Aforge.Net useful to use for this task
any help will be appreciated

Posted 23-Mar-15 10:30am

Mujeeba Haj Najeeb

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Sergey Alexandrovich Kryukov 23-Mar-15 16:50pm

You need some point data, {x, y} (is it 2D?), it does not matter what is that. If you used AForge.NET regardless the points, you can use it, otherwise use anything else.
—SA

Mujeeba Haj Najeeb 24-Mar-15 10:58am

I've got points declared as 2D array but I want to make a windows application not console application so I need to show the points before and after clustering as shown here
http://www.codeproject.com/Articles/439890/Text-Documents-Clustering-using-K-Means-Algorithm

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Mujeeba Haj Najeeb · Answer 1 · 2015-04-13T01:38:00

This is an example describes how I solved the problem using C#:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

public double[][] Iris =
{
new double[] {2,14}, /*1*/
new double[] {24,56}, /*2*/
new double[] {23,51}, /*3*/
new double[] {2 ,10}, /*4*/
new double[] {20,52}, /*5*/
new double[] {19,51}, /*6*/
new double[] {13,45}, /*7*/
new double[] {16,47}, /*8*/
new double[] {17,45}, /*9*/
new double[] {14,47}, /*10*/
new double[] {2,16}, /*11*/
new double[] {19,50} /*12*/
};

int[] idx = new int[] { 1, 0, 2, 1, 0, 1, 0, 2, 0, 1, 1, 2 };

private void panel1_Click(object sender, EventArgs e)
{
Graphics g = panel1.CreateGraphics();
Bitmap bm = new Bitmap(500,500);
for (int i = 0; i < Iris.Length; i++)
{
if (idx[i] == 0)
{
bm.SetPixel(Convert.ToInt32(Iris[i][0]), Convert.ToInt32(Iris[i][1]), Color.Red);
//bm.SetPixel((int)Iris[i][0], (int)Iris[i][1], Color.Red);
g.DrawImageUnscaled(bm, 500, 500);
}
else
if (idx[i] == 1)
{
bm.SetPixel(Convert.ToInt32(Iris[i][0]), Convert.ToInt32(Iris[i][1]), Color.Green);
g.DrawImageUnscaled(bm, 5, 5);
}
else
{
bm.SetPixel(Convert.ToInt32(Iris[i][0]), Convert.ToInt32(Iris[i][1]), Color.Blue);
g.DrawImageUnscaled(bm, 5, 5);
}
}
}
}
}