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//教 罗永浩的工程师，如何在业绩--销量（预售量）上面做假（才能不被群众识破）。
换个说法是：从算法（和数据挖掘）角度讲，怎样的业绩（销量）才是正常的……而怎样的数据形态，就是在业绩上做假……
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace WinFA1LuoYongHao02
{//
public partial class Form1 : Form
{//
public Form1()
{
InitializeComponent();
}
//
protected override void OnPaint(PaintEventArgs e)
{//protected override void OnPaint(PaintEventArgs e
Graphics g = e.Graphics;
this.Width = 1224;// 1024;// 600; // 800;
this.Height = 700; // 800; //1024; // 800;
Pen pnBlue = new Pen(Color.Blue);
Pen pnG = new Pen(Color.Green);
Pen pnBlack = new Pen(Color.Black);
Pen pnR = new Pen(Color.Red);
int starx = 0;
int starxy = 0;
int endx = 1100;
int endy = 600;
int highY = 700;
//画 x轴
Point pt01x = new Point(100, endy-100);
Point pt02x = new Point(endx, endy-100);
g.DrawLine(pnBlue, pt01x, pt02x);
Font font01 = new Font("宋体", 10f);
Brush brush01 = Brushes.Blue;
for (int i = 0; i < 1100; ++i) //循环画坐标
{
if (0 == (i % 50) ) {
Point pt001x = new Point(100 + i, endy - 100);
string istr = i.ToString();
g.DrawString(istr, font01, brush01, pt001x);
} //if11
}//for11
string str1 = "X坐标为时间轴";
Font font = new Font("宋体", 30f);
Brush brush = Brushes.Red;
PointF point = new PointF(100 +800, 100+400);
//横着写还是竖着写呢？
System.Drawing.StringFormat sf = new System.Drawing.StringFormat();
//还是竖着写吧
sf.FormatFlags = StringFormatFlags.DirectionVertical;
g.DrawString(str1, font, brush, point); //, sf);
//画 y轴
Point pt11y = new Point(100, 100);
Point pt12y = new Point(100, endy-100);
g.DrawLine(pnBlue, pt11y, pt12y);
font01 = new Font("宋体", 10f);
brush01 = Brushes.Blue;
for (int i = 0; i < 900; ++i)
{
if (0 == (i % 20))
{
Point pt001x = new Point(100-30 , endy - (100 +i) );
string istr = i.ToString();
g.DrawString(istr, font01, brush01, pt001x);
} //if11
}//for11
str1 = "y轴-业绩(销量)";
font = new Font("宋体", 30f);
brush = Brushes.Red;
point = new PointF(100, 100);
//横着写还是竖着写呢？
sf = new System.Drawing.StringFormat();
//还是竖着写吧
sf.FormatFlags = StringFormatFlags.DirectionVertical;
g.DrawString(str1, font, brush, point, sf);
//模拟真实算法;
int trueY = 0;
Point pt1 = new Point(100 + 0, endy - (trueY + 100));
Point pt2 = pt1;
int trueXlast = 0;
int trueYlast = 0;
int gz = 2;// 5;// 10;
for (int i = 0; i < 799; i+=gz)
{
int trueX = i ;
Random rd = new Random(Guid.NewGuid().GetHashCode());
int buyy = rd.Next(0, 10);
Point pt3;
if (buyy > 8) // 8/10的时间用户不买, 2/10的用户买,用随机数模仿 客户购买习惯
{
trueY += gz;
pt2 = new Point(100+trueXlast, endy - trueY - 100);
g.DrawLine(pnBlack, pt1, pt2); //从 ptt1上次点, 画到 上次的 x点不变,y轴点 变化(蜡烛图 画蜡烛）
//ptt2 = new Point(100 + trueX , endy - trueY - 100);
}
else { pt2 = new Point(100+trueXlast, endy - trueY - 100);
}
pt3 = new Point(100 + trueX, endy - trueY - 100);
g.DrawLine(pnBlack, pt2, pt3); //从 上支蜡烛的终点，画到 下支蜡烛的起点
pt1 = pt3;
trueXlast = trueX;
trueYlast = trueY;
}
string str12 = "模拟真实(正常)销售率的销售线";
font = new Font("宋体", 20f);
brush = Brushes.Red;
point = new PointF(trueXlast, trueYlast +100+100+ 150);
//横着写还是竖着写呢？
System.Drawing.StringFormat sf12 = new System.Drawing.StringFormat();
//还是横着写吧
sf.FormatFlags = StringFormatFlags.DirectionVertical;
g.DrawString(str12, font, brush, point); //, sf);
//高销售率算法
trueY = 0;
pt1 = new Point(100 + 0, endy - (trueY + 100));
pt2 = p |