c# 实现神经网络

【实例简介】c# 实现神经网络

【实例截图】

【核心代码】

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

namespace NeuralNetworkDemo
{
/// <summary>
/// Summary description for Form1.
/// </summary>
public class Demo : System.Windows.Forms.Form
{
private System.Windows.Forms.Button b_clear_pts;
private System.Windows.Forms.Button b_clear_draw;
private System.Windows.Forms.Button b_learn;
private System.Windows.Forms.Button b_draw_out;
private NeuralNetworkDemo.Demo2D_Draw demo2D_Draw1;
private NeuralNetworkGUI.NeuralNetworkEditor neuralNetworkEditor1;
private System.Windows.Forms.Panel panel1;
private System.Windows.Forms.Label label1;
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.Container components = null;
private System.Windows.Forms.Panel panel2;
private System.Windows.Forms.TabControl tabControl1;
private System.Windows.Forms.TabPage tabPage1;
private System.Windows.Forms.TabPage tabPage2;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.Panel panel3;
private NeuralNetworkGUI.NeuralNetworkEditor neuralNetworkEditor2;
private NeuralNetworkDemo.Demo3D_draw demo3D_draw1;
private System.Windows.Forms.Panel panel4;
private System.Windows.Forms.Button b_3d_drawnn;
private System.Windows.Forms.Button b_3d_clearnn;
private System.Windows.Forms.Button b_3d_learn;
private System.Windows.Forms.Button b_3d_cpts;
private System.Windows.Forms.Label label3;
private System.Windows.Forms.NumericUpDown num_res;

int[] defaultNN = {6,4,1};

public Demo()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
//
// TODO: Add any constructor code after InitializeComponent call
//
neuralNetworkEditor1.Neural_Network = new NeuralNetwork.NeuralNetwork(1,defaultNN);
demo2D_Draw1.setNeuralNetwork(neuralNetworkEditor1.Neural_Network);
neuralNetworkEditor1.lockNetworkIO(1,1);
neuralNetworkEditor2.Neural_Network = new NeuralNetwork.NeuralNetwork(2,defaultNN);
neuralNetworkEditor2.lockNetworkIO(2,1);
demo3D_draw1.setNeuralNetwork(neuralNetworkEditor2.Neural_Network);

}

/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null) 
{
components.Dispose();
}
}
base.Dispose( disposing );
}

#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.b_clear_pts = new System.Windows.Forms.Button();
this.b_clear_draw = new System.Windows.Forms.Button();
this.b_learn = new System.Windows.Forms.Button();
this.b_draw_out = new System.Windows.Forms.Button();
this.demo2D_Draw1 = new NeuralNetworkDemo.Demo2D_Draw();
this.neuralNetworkEditor1 = new NeuralNetworkGUI.NeuralNetworkEditor();
this.panel1 = new System.Windows.Forms.Panel();
this.label1 = new System.Windows.Forms.Label();
this.panel2 = new System.Windows.Forms.Panel();
this.tabControl1 = new System.Windows.Forms.TabControl();
this.tabPage1 = new System.Windows.Forms.TabPage();
this.tabPage2 = new System.Windows.Forms.TabPage();
this.num_res = new System.Windows.Forms.NumericUpDown();
this.label3 = new System.Windows.Forms.Label();
this.panel4 = new System.Windows.Forms.Panel();
this.demo3D_draw1 = new NeuralNetworkDemo.Demo3D_draw();
this.b_3d_drawnn = new System.Windows.Forms.Button();
this.label2 = new System.Windows.Forms.Label();
this.b_3d_clearnn = new System.Windows.Forms.Button();
this.b_3d_learn = new System.Windows.Forms.Button();
this.panel3 = new System.Windows.Forms.Panel();
this.neuralNetworkEditor2 = new NeuralNetworkGUI.NeuralNetworkEditor();
this.b_3d_cpts = new System.Windows.Forms.Button();
this.panel1.SuspendLayout();
this.panel2.SuspendLayout();
this.tabControl1.SuspendLayout();
this.tabPage1.SuspendLayout();
this.tabPage2.SuspendLayout();
((System.ComponentModel.ISupportInitialize)(this.num_res)).BeginInit();
this.panel4.SuspendLayout();
this.panel3.SuspendLayout();
this.SuspendLayout();
// 
// b_clear_pts
// 
this.b_clear_pts.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(255)), ((System.Byte)(192)), ((System.Byte)(192)));
this.b_clear_pts.FlatStyle = System.Windows.Forms.FlatStyle.Flat;
this.b_clear_pts.Font = new System.Drawing.Font("Verdana", 9.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.b_clear_pts.Location = new System.Drawing.Point(56, 504);
this.b_clear_pts.Name = "b_clear_pts";
this.b_clear_pts.Size = new System.Drawing.Size(136, 23);
this.b_clear_pts.TabIndex = 0;
this.b_clear_pts.Text = "Clear points";
this.b_clear_pts.Click = new System.EventHandler(this.b_clear_pts_Click);
// 
// b_clear_draw
// 
this.b_clear_draw.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(192)), ((System.Byte)(192)), ((System.Byte)(255)));
this.b_clear_draw.FlatStyle = System.Windows.Forms.FlatStyle.Flat;
this.b_clear_draw.Font = new System.Drawing.Font("Verdana", 9.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.b_clear_draw.Location = new System.Drawing.Point(336, 488);
this.b_clear_draw.Name = "b_clear_draw";
this.b_clear_draw.Size = new System.Drawing.Size(240, 23);
this.b_clear_draw.TabIndex = 1;
this.b_clear_draw.Text = "Clear neural network output";
this.b_clear_draw.Click = new System.EventHandler(this.b_clear_draw_Click);
// 
// b_learn
// 
this.b_learn.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(192)), ((System.Byte)(255)), ((System.Byte)(192)));
this.b_learn.FlatStyle = System.Windows.Forms.FlatStyle.Flat;
this.b_learn.Font = new System.Drawing.Font("Verdana", 9.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.b_learn.Location = new System.Drawing.Point(208, 504);
this.b_learn.Name = "b_learn";
this.b_learn.Size = new System.Drawing.Size(104, 23);
this.b_learn.TabIndex = 2;
this.b_learn.Text = "Learn";
this.b_learn.Click = new System.EventHandler(this.b_learn_Click);
// 
// b_draw_out
// 
this.b_draw_out.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(192)), ((System.Byte)(192)), ((System.Byte)(255)));
this.b_draw_out.FlatStyle = System.Windows.Forms.FlatStyle.Flat;
this.b_draw_out.Font = new System.Drawing.Font("Verdana", 9.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.b_draw_out.Location = new System.Drawing.Point(336, 520);
this.b_draw_out.Name = "b_draw_out";
this.b_draw_out.Size = new System.Drawing.Size(240, 23);
this.b_draw_out.TabIndex = 3;
this.b_draw_out.Text = "Draw neural network output";
this.b_draw_out.Click = new System.EventHandler(this.b_draw_out_Click);
// 
// demo2D_Draw1
// 
this.demo2D_Draw1.BackColor = System.Drawing.SystemColors.ActiveCaptionText;
this.demo2D_Draw1.Name = "demo2D_Draw1";
this.demo2D_Draw1.Size = new System.Drawing.Size(600, 400);
this.demo2D_Draw1.TabIndex = 4;
// 
// neuralNetworkEditor1
// 
this.neuralNetworkEditor1.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(224)), ((System.Byte)(224)), ((System.Byte)(224)));
this.neuralNetworkEditor1.Font = new System.Drawing.Font("Verdana", 9.75F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.neuralNetworkEditor1.Name = "neuralNetworkEditor1";
this.neuralNetworkEditor1.Neural_Network = null;
this.neuralNetworkEditor1.Size = new System.Drawing.Size(336, 552);
this.neuralNetworkEditor1.TabIndex = 5;
// 
// panel1
// 
this.panel1.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
this.panel1.Controls.AddRange(new System.Windows.Forms.Control[] {
this.neuralNetworkEditor1});
this.panel1.Location = new System.Drawing.Point(632, 8);
this.panel1.Name = "panel1";
this.panel1.Size = new System.Drawing.Size(336, 552);
this.panel1.TabIndex = 6;
// 
// label1
// 
this.label1.Font = new System.Drawing.Font("Verdana", 14.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.label1.Location = new System.Drawing.Point(24, 24);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(592, 32);
this.label1.TabIndex = 7;
this.label1.Text = "Demo of function aproximation by a neural network";
// 
// panel2
// 
this.panel2.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
this.panel2.Controls.AddRange(new System.Windows.Forms.Control[] {
this.demo2D_Draw1});
this.panel2.Location = new System.Drawing.Point(16, 72);
this.panel2.Name = "panel2";
this.panel2.Size = new System.Drawing.Size(600, 400);
this.panel2.TabIndex = 8;
// 
// tabControl1
// 
this.tabControl1.Appearance = System.Windows.Forms.TabAppearance.FlatButtons;
this.tabControl1.Controls.AddRange(new System.Windows.Forms.Control[] {
  this.tabPage1,
  this.tabPage2});
this.tabControl1.Name = "tabControl1";
this.tabControl1.SelectedIndex = 0;
this.tabControl1.Size = new System.Drawing.Size(992, 608);
this.tabControl1.TabIndex = 9;
// 
// tabPage1
// 
this.tabPage1.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(224)), ((System.Byte)(224)), ((System.Byte)(224)));
this.tabPage1.Controls.AddRange(new System.Windows.Forms.Control[] {
   this.b_draw_out,
   this.label1,
   this.b_clear_draw,
   this.b_learn,
   this.panel1,
   this.panel2,
   this.b_clear_pts});
this.tabPage1.Location = new System.Drawing.Point(4, 28);
this.tabPage1.Name = "tabPage1";
this.tabPage1.Size = new System.Drawing.Size(984, 576);
this.tabPage1.TabIndex = 0;
this.tabPage1.Text = "Function Aproximation";
// 
// tabPage2
// 
this.tabPage2.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(224)), ((System.Byte)(224)), ((System.Byte)(224)));
this.tabPage2.Controls.AddRange(new System.Windows.Forms.Control[] {
   this.num_res,
   this.label3,
   this.panel4,
   this.b_3d_drawnn,
   this.label2,
   this.b_3d_clearnn,
   this.b_3d_learn,
   this.panel3,
   this.b_3d_cpts});
this.tabPage2.Location = new System.Drawing.Point(4, 28);
this.tabPage2.Name = "tabPage2";
this.tabPage2.Size = new System.Drawing.Size(984, 576);
this.tabPage2.TabIndex = 1;
this.tabPage2.Text = "Repartition Aproximation";
// 
// num_res
// 
this.num_res.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
this.num_res.DecimalPlaces = 3;
this.num_res.Increment = new System.Decimal(new int[] {
  5,
  0,
  0,
  196608});
this.num_res.Location = new System.Drawing.Point(192, 528);
this.num_res.Maximum = new System.Decimal(new int[] {
5,
0,
0,
65536});
this.num_res.Minimum = new System.Decimal(new int[] {
5,
0,
0,
196608});
this.num_res.Name = "num_res";
this.num_res.Size = new System.Drawing.Size(88, 23);
this.num_res.TabIndex = 17;
this.num_res.Value = new System.Decimal(new int[] {
  25,
  0,
  0,
  196608});
// 
// label3
// 
this.label3.Location = new System.Drawing.Point(104, 530);
this.label3.Name = "label3";
this.label3.TabIndex = 16;
this.label3.Text = "Resolution :";
// 
// panel4
// 
this.panel4.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
this.panel4.Controls.AddRange(new System.Windows.Forms.Control[] {
this.demo3D_draw1});
this.panel4.Location = new System.Drawing.Point(16, 72);
this.panel4.Name = "panel4";
this.panel4.Size = new System.Drawing.Size(600, 400);
this.panel4.TabIndex = 15;
// 
// demo3D_draw1
// 
this.demo3D_draw1.BackColor = System.Drawing.Color.White;
this.demo3D_draw1.Name = "demo3D_draw1";
this.demo3D_draw1.Resolution = 0.025F;
this.demo3D_draw1.Size = new System.Drawing.Size(600, 400);
this.demo3D_draw1.TabIndex = 14;
// 
// b_3d_drawnn
// 
this.b_3d_drawnn.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(192)), ((System.Byte)(192)), ((System.Byte)(255)));
this.b_3d_drawnn.FlatStyle = System.Windows.Forms.FlatStyle.Flat;
this.b_3d_drawnn.Font = new System.Drawing.Font("Verdana", 9.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.b_3d_drawnn.Location = new System.Drawing.Point(304, 528);
this.b_3d_drawnn.Name = "b_3d_drawnn";
this.b_3d_drawnn.Size = new System.Drawing.Size(240, 23);
this.b_3d_drawnn.TabIndex = 11;
this.b_3d_drawnn.Text = "Draw neural network output";
this.b_3d_drawnn.Click = new System.EventHandler(this.b_3d_drawnn_Click);
// 
// label2
// 
this.label2.Font = new System.Drawing.Font("Verdana", 14.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.label2.Location = new System.Drawing.Point(16, 24);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(608, 32);
this.label2.TabIndex = 13;
this.label2.Text = "Demo of repartition aproximation by a neural network";
// 
// b_3d_clearnn
// 
this.b_3d_clearnn.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(192)), ((System.Byte)(192)), ((System.Byte)(255)));
this.b_3d_clearnn.FlatStyle = System.Windows.Forms.FlatStyle.Flat;
this.b_3d_clearnn.Font = new System.Drawing.Font("Verdana", 9.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.b_3d_clearnn.Location = new System.Drawing.Point(336, 488);
this.b_3d_clearnn.Name = "b_3d_clearnn";
this.b_3d_clearnn.Size = new System.Drawing.Size(240, 23);
this.b_3d_clearnn.TabIndex = 9;
this.b_3d_clearnn.Text = "Clear neural network output";
this.b_3d_clearnn.Click = new System.EventHandler(this.b_3d_clearnn_Click);
// 
// b_3d_learn
// 
this.b_3d_learn.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(192)), ((System.Byte)(255)), ((System.Byte)(192)));
this.b_3d_learn.FlatStyle = System.Windows.Forms.FlatStyle.Flat;
this.b_3d_learn.Font = new System.Drawing.Font("Verdana", 9.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.b_3d_learn.Location = new System.Drawing.Point(208, 488);
this.b_3d_learn.Name = "b_3d_learn";
this.b_3d_learn.Size = new System.Drawing.Size(104, 23);
this.b_3d_learn.TabIndex = 10;
this.b_3d_learn.Text = "Learn";
this.b_3d_learn.Click = new System.EventHandler(this.b_3d_learn_Click);
// 
// panel3
// 
this.panel3.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
this.panel3.Controls.AddRange(new System.Windows.Forms.Control[] {
this.neuralNetworkEditor2});
this.panel3.Location = new System.Drawing.Point(632, 8);
this.panel3.Name = "panel3";
this.panel3.Size = new System.Drawing.Size(336, 552);
this.panel3.TabIndex = 12;
// 
// neuralNetworkEditor2
// 
this.neuralNetworkEditor2.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(224)), ((System.Byte)(224)), ((System.Byte)(224)));
this.neuralNetworkEditor2.Font = new System.Drawing.Font("Verdana", 9.75F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.neuralNetworkEditor2.Name = "neuralNetworkEditor2";
this.neuralNetworkEditor2.Neural_Network = null;
this.neuralNetworkEditor2.Size = new System.Drawing.Size(336, 552);
this.neuralNetworkEditor2.TabIndex = 5;
// 
// b_3d_cpts
// 
this.b_3d_cpts.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(255)), ((System.Byte)(192)), ((System.Byte)(192)));
this.b_3d_cpts.FlatStyle = System.Windows.Forms.FlatStyle.Flat;
this.b_3d_cpts.Font = new System.Drawing.Font("Verdana", 9.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.b_3d_cpts.Location = new System.Drawing.Point(56, 488);
this.b_3d_cpts.Name = "b_3d_cpts";
this.b_3d_cpts.Size = new System.Drawing.Size(136, 23);
this.b_3d_cpts.TabIndex = 8;
this.b_3d_cpts.Text = "Clear points";
this.b_3d_cpts.Click = new System.EventHandler(this.b_3d_cpts_Click);
// 
// Demo
// 
this.AutoScaleBaseSize = new System.Drawing.Size(7, 16);
this.ClientSize = new System.Drawing.Size(984, 598);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
  this.tabControl1});
this.Font = new System.Drawing.Font("Verdana", 9.75F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.Name = "Demo";
this.Text = "Neural Network Demo";
this.Load = new System.EventHandler(this.Demo_Load);
this.panel1.ResumeLayout(false);
this.panel2.ResumeLayout(false);
this.tabControl1.ResumeLayout(false);
this.tabPage1.ResumeLayout(false);
this.tabPage2.ResumeLayout(false);
((System.ComponentModel.ISupportInitialize)(this.num_res)).EndInit();
this.panel4.ResumeLayout(false);
this.panel3.ResumeLayout(false);
this.ResumeLayout(false);

}
#endregion

/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main() 
{
Application.Run(new Demo());
}

private void b_clear_pts_Click(object sender, System.EventArgs e)
{
demo2D_Draw1.clearPoints();
}

private void b_learn_Click(object sender, System.EventArgs e)
{
demo2D_Draw1.setNeuralNetwork(neuralNetworkEditor1.Neural_Network);
demo2D_Draw1.learn();
neuralNetworkEditor1.refreshAll();

}

private void b_clear_draw_Click(object sender, System.EventArgs e)
{
demo2D_Draw1.Refresh();
}

private void b_draw_out_Click(object sender, System.EventArgs e)
{
demo2D_Draw1.Refresh();
demo2D_Draw1.setNeuralNetwork(neuralNetworkEditor1.Neural_Network);
demo2D_Draw1.drawNNOut();
}

private void Demo_Load(object sender, System.EventArgs e)
{

}

private void b_3d_drawnn_Click(object sender, System.EventArgs e)
{
demo3D_draw1.Refresh();
demo3D_draw1.setNeuralNetwork(neuralNetworkEditor2.Neural_Network);
demo3D_draw1.Resolution = (float)this.num_res.Value;
demo3D_draw1.drawNNOut();
}

private void b_3d_cpts_Click(object sender, System.EventArgs e)
{
demo3D_draw1.clearPoints();
}

private void b_3d_clearnn_Click(object sender, System.EventArgs e)
{
demo3D_draw1.Refresh();
}

private void b_3d_learn_Click(object sender, System.EventArgs e)
{
demo3D_draw1.setNeuralNetwork(neuralNetworkEditor2.Neural_Network);
demo3D_draw1.learn();
neuralNetworkEditor2.refreshAll();
}


}
}
using System;
using System.Collections;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Windows.Forms;
using NeuralNetwork;

namespace NeuralNetworkDemo
{
/// <summary>
/// Summary description for Demo2D_Draw.
/// </summary>
public class Demo2D_Draw : System.Windows.Forms.UserControl
{
/// <summary> 
/// Required designer variable.
/// </summary>
private System.ComponentModel.Container components = null;

protected NeuralNetwork.NeuralNetwork nn;
protected ArrayList pts = new ArrayList();
public static float X_MIN = -1f;
public static float X_MAX = 1f;
public static float Y_MIN = 0f;
public static float Y_MAX = 1f;

public Demo2D_Draw()
{

// This call is required by the Windows.Forms Form Designer.
InitializeComponent();

// TODO: Add any initialization after the InitForm call

}
public void setNeuralNetwork(NeuralNetwork.NeuralNetwork n) 
{
nn = n;
}

/// <summary> 
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if(components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}

#region Component Designer generated code
/// <summary> 
/// Required method for Designer support - do not modify 
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
// 
// Demo2D_Draw
// 
this.BackColor = System.Drawing.SystemColors.ActiveCaptionText;
this.Name = "Demo2D_Draw";
this.Size = new System.Drawing.Size(600, 400);
this.Paint = new System.Windows.Forms.PaintEventHandler(this.graph_Paint);
this.MouseDown = new System.Windows.Forms.MouseEventHandler(this.graph_MouseDown);

}
#endregion

public void clearPoints() 
{
pts.Clear();
this.Refresh();
}

private void graph_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{
UnPoint p =new UnPoint(e.X, e.Y, Width, Height);
pts.Add(p);
Graphics g = this.CreateGraphics();
SolidBrush b = new SolidBrush(Color.Red);
g.FillEllipse(b,p.X-3,p.Y-3,6,6);
}

public void learn() 
{
float[][] X = new float[pts.Count][];
float[][] Y = new float[pts.Count][];

for(int i=0; i<pts.Count; i )
{
X[i] = new float[1];
Y[i] = new float[pts.Count];
X[i][0] = (((UnPoint)pts[i]).x-X_MIN)/(X_MAX-X_MIN);
Y[i][0] = ((UnPoint)pts[i]).y;
}
if (pts.Count > 0)
nn.LearningAlg.Learn(X,Y);
drawNNOut();
}

public void drawNNOut() 
{
Graphics g = this.CreateGraphics();
Pen p = new Pen(new SolidBrush(Color.Blue),1);
float y;
float[] X = new float[1];
for (float x=X_MIN; x<X_MAX; x =0.002f) 
{
X[0] = (x-X_MIN)/(X_MAX-X_MIN);
y = nn.Output(X)[0];
g.DrawLine(p,cX(x), cY(y),cX(x),cY(y) 1);
}
}

protected int cX(float x) 
{
return (int)(((float)(Width-1))/(X_MAX-X_MIN)*(x-X_MIN));
}
protected int cY(float y) 
{
return (Height-1) - (int)(((float)(Height-1))/(Y_MAX-Y_MIN)*(y-Y_MIN));
}

private void graph_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
{
Graphics g = this.CreateGraphics();
Pen p = new Pen(new SolidBrush(Color.Black),1);

// Le repere :
//g.DrawLine(p,cX(0),cY(Y_MIN),cX(0),cY(Y_MAX));
//g.DrawLine(p,cX(X_MIN),cY(0),cX(X_MAX),cY(0));
// Les points
SolidBrush b = new SolidBrush(Color.Red);
foreach(UnPoint po in pts)
g.FillEllipse(b,po.X-3,po.Y-3,6,6);
}

public class UnPoint 
{
public int X, Y;
public float x, y;
public float v;

public UnPoint(int XX, int YY, int w, int h) 
{
X = XX;
Y = YY;
x = (X_MAX-X_MIN)/((float)(w-1))*((float)X) X_MIN;
y = (Y_MAX-Y_MIN)/((float)(h-1))*((float)((h-1) - Y)) Y_MIN;
}

public UnPoint(float xx, float yy, int w, int h) 
{
x = xx;
y = yy;
X = (int)(((float)(w-1))/(X_MAX-X_MIN)*(x-X_MIN));
Y = (h-1) - (int)(((float)(h-1))/(Y_MAX-Y_MIN)*(y-Y_MIN));
}

public void Refresh(int w, int h) 
{
X = (int)(((float)(w-1))/(X_MAX-X_MIN)*(x-X_MIN));
Y = (h-1) - (int)(((float)(h-1))/(Y_MAX-Y_MIN)*(y-Y_MIN));
}


}
}
}