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266 lines
11 KiB
266 lines
11 KiB
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Windows.Forms.DataVisualization.Charting;
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using System.Drawing;
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using System.Data;
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namespace QMAPP.WinForm.Common.SPCMonitor
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{
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/// <summary>
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/// 描述：SPC图表帮助类
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/// 作者：单雨春
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/// 日期：2015年5月28日11:03:02
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/// </summary>
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public class ChartHelper
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{
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/// <summary>
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/// 画趋势图
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/// </summary>
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/// <param name="chart"></param>
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/// <param name="chartValue"></param>
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/// <returns></returns>
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public static Chart DrawTendencyChart(Chart chart, DataTable dt, string quota)
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{
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//获得坐标的最大值及最小值
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ChartValueModel chartValue = GetChartValueForTendency(dt, quota);
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//设置图表的坐标
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chart.ChartAreas.FirstOrDefault().AxisY.Interval = chartValue.Step;
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chart.ChartAreas.FirstOrDefault().AxisY.Maximum = chartValue.MaxOfCoord;
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chart.ChartAreas.FirstOrDefault().AxisY.Minimum = chartValue.MinOfCoord;
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//画上限、下限之间的格线
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for (double tempValue = chartValue.Min; tempValue < chartValue.Max; tempValue += chartValue.Step)
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{
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StripLine dash = new StripLine();
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dash.BackColor = System.Drawing.Color.Silver;
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dash.BorderDashStyle = ChartDashStyle.Dash;
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dash.IntervalOffset = Math.Round(tempValue,2);
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dash.StripWidth = 0.0001;
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chart.ChartAreas.FirstOrDefault().AxisY.StripLines.Add(dash);
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}
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//下限
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StripLine minLine = new StripLine();
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minLine.BackColor = Color.FromArgb(0, 90, 0);
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minLine.BorderDashStyle = ChartDashStyle.Dash;
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minLine.IntervalOffset = Convert.ToDouble(chartValue.Min);
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minLine.StripWidth = 0.0001;
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minLine.Text = chartValue.Min.ToString();
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minLine.TextAlignment = StringAlignment.Far;
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chart.ChartAreas.FirstOrDefault().AxisY.StripLines.Add(minLine);
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//上限
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StripLine maxLine = new StripLine();
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maxLine.BackColor = Color.FromArgb(0, 90, 0);
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maxLine.BorderDashStyle = ChartDashStyle.Dash;
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maxLine.IntervalOffset = Convert.ToDouble(chartValue.Max);
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maxLine.StripWidth = 0.0001;
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maxLine.Text = chartValue.Max.ToString();
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maxLine.TextAlignment = StringAlignment.Far;
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chart.ChartAreas.FirstOrDefault().AxisY.StripLines.Add(maxLine);
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//中值
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StripLine midLine = new StripLine();
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midLine.BackColor = Color.FromArgb(0, 90, 0);
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midLine.BorderDashStyle = ChartDashStyle.Dash;
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midLine.IntervalOffset = Convert.ToDouble(chartValue.Middle);
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midLine.StripWidth = 0.0001;
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midLine.Text = chartValue.Middle.ToString();
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midLine.TextAlignment = StringAlignment.Far;
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chart.ChartAreas.FirstOrDefault().AxisY.StripLines.Add(midLine);
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//去掉X轴的标签
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chart.ChartAreas.FirstOrDefault().AxisX.LabelStyle.Enabled = false;
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return chart;
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}
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// <summary>
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/// 画分布
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/// </summary>
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/// <param name="chart"></param>
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/// <param name="chartValue"></param>
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/// <returns></returns>
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public static Chart DrawDistributionChart(Chart chart, DataTable dt,Dictionary<double, int> dict, string quota)
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{
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//获得坐标的最大值及最小值
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ChartValueModel chartValue = GetChartValueForDistribution(dt, quota);
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//设置图表的坐标
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chart.ChartAreas.FirstOrDefault().AxisX.Interval = chartValue.Step;
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chart.ChartAreas.FirstOrDefault().AxisX.Maximum = chartValue.MaxOfCoord;
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chart.ChartAreas.FirstOrDefault().AxisX.Minimum = chartValue.MinOfCoord;
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//均值
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double avg = dt.AsEnumerable().Average(p => Convert.ToDouble(p[quota]));
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//均方差
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double dev = Math.Sqrt(dt.AsEnumerable().Average(p => Math.Pow(Convert.ToDouble(p[quota]) - avg, 2)));
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//标题
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Title title = new Title("3σ = " + 3 * Math.Round(dev, 6) + "\n" + " ¯x = " + Math.Round(avg, 6), Docking.Right);
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title.TextOrientation = TextOrientation.Horizontal;
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title.Alignment = ContentAlignment.TopRight;
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title.ForeColor = System.Drawing.Color.RoyalBlue;
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title.IsDockedInsideChartArea = true;
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title.DockedToChartArea = "ChartA";
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chart.Titles.Add(title);
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//高斯图形
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Series seriesGaussian = GetGaussianSeries(dict.Values.Max(), avg, dev);
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chart.Series.Add(seriesGaussian);
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//下限
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StripLine minLine = new StripLine();
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minLine.BackColor = System.Drawing.Color.Green;
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minLine.BorderDashStyle = ChartDashStyle.Dash;
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minLine.IntervalOffset = avg - 3 * dev;
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minLine.StripWidth = 0.0001;
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minLine.Text = "3σ";
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minLine.TextAlignment = StringAlignment.Far;
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minLine.TextOrientation = TextOrientation.Horizontal;
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chart.ChartAreas.FirstOrDefault().AxisX.StripLines.Add(minLine);
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//上限
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StripLine maxLine = new StripLine();
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maxLine.BackColor = System.Drawing.Color.Green;
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maxLine.BorderDashStyle = ChartDashStyle.Dash;
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maxLine.IntervalOffset = avg + 3 * dev;
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maxLine.StripWidth = 0.0001;
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maxLine.Text = "3σ";
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maxLine.TextAlignment = StringAlignment.Far;
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maxLine.TextOrientation = TextOrientation.Horizontal;
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chart.ChartAreas.FirstOrDefault().AxisX.StripLines.Add(maxLine);
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//中值
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StripLine midLine = new StripLine();
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midLine.BackColor = System.Drawing.Color.Orange;
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midLine.BorderDashStyle = ChartDashStyle.Dash;
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midLine.IntervalOffset = avg;
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midLine.StripWidth = 0.0001;
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midLine.Text = "¯x";
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midLine.TextOrientation = TextOrientation.Stacked;
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midLine.TextAlignment = StringAlignment.Far;
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chart.ChartAreas.FirstOrDefault().AxisX.StripLines.Add(midLine);
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//去掉Y轴的标签
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chart.ChartAreas.FirstOrDefault().AxisY.LabelStyle.Enabled = false;
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return chart;
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}
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/// <summary>
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/// 趋势图-设置坐标及间隔
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/// </summary>
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/// <param name="dr"></param>
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/// <returns></returns>
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public static ChartValueModel GetChartValueForTendency(DataTable dt, string quota)
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{
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ChartValueModel chartValue = new ChartValueModel();
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DataRow dr = dt.AsEnumerable().FirstOrDefault();
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//取得最大值和最小值
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chartValue.Min = Convert.ToDouble(dr["MIN"]);
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chartValue.Max = Convert.ToDouble(dr["MAX"]);
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chartValue.Middle = Convert.ToDouble(chartValue.Min + chartValue.Max) / 2;
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//计算间隔
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chartValue.Step = (chartValue.Max - chartValue.Min) / 10.0;
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//计算最大坐标和最小坐标
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chartValue.MaxOfCoord = chartValue.Max + chartValue.Step * 5;
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chartValue.MinOfCoord = chartValue.Min - chartValue.Step * 5;
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return chartValue;
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}
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/// <summary>
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/// 分布图-设置坐标及间隔
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/// </summary>
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/// <param name="dr"></param>
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/// <returns></returns>
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public static ChartValueModel GetChartValueForDistribution(DataTable dt, string quota)
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{
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ChartValueModel chartValue = new ChartValueModel();
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DataRow dr = dt.AsEnumerable().FirstOrDefault();
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//取得最大值和最小值
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chartValue.Min = dt.AsEnumerable().Min(p => Convert.ToDouble(p[quota]));
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chartValue.Max = dt.AsEnumerable().Max(p => Convert.ToDouble(p[quota]));
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//计算间隔
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chartValue.Step = double.Parse(dr["STEP"].ToString());
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//计算最大坐标和最小坐标
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chartValue.MaxOfCoord = chartValue.Max + chartValue.Step * 3;
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chartValue.MinOfCoord = chartValue.Min - chartValue.Step * 3;
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return chartValue;
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}
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/// <summary>
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/// 获取高斯函数图形
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/// </summary>
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/// <param name="yMax">Y轴最大</param>
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/// <param name="avg">均值</param>
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/// <param name="dev">均方差</param>
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/// <returns></returns>
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private static Series GetGaussianSeries(int yMax, double avg, double dev)
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{
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#region 高斯算法
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List<GaussianModel> gass = new List<GaussianModel>();
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double min = avg - 6 * dev;
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double max = avg + 6 * dev;
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double step = (max - min) / 100;
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if (step == 0)
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step = Int32.MaxValue;
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for (double m = min; m <= max; m += step)
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{
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GaussianModel model = new GaussianModel();
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double y = (1 / (Math.Sqrt(2 * Math.PI) * dev)) * Math.Pow(Math.E, 0 - (Math.Pow(m - avg, 2) / (2 * Math.Pow(dev, 2))));
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model.X = m;
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model.Y = y;
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gass.Add(model);
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}
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#endregion
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#region 画高斯图形
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Series seriesGass = new Series();
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seriesGass.ChartType = SeriesChartType.Spline;
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double pram = 0;
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double temp = 0;
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pram = yMax * 1.1;
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//double gassMax = gass[50].Y;
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double gassMax = gass.Max<GaussianModel>(o => o.Y);
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temp = pram / gassMax;
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foreach (GaussianModel item in gass)
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{
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seriesGass.Points.AddXY(item.X, temp * item.Y);
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}
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#endregion
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return seriesGass;
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}
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/// <summary>
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/// 取Bar图的所有坐标
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/// </summary>
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/// <param name="dr"></param>
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/// <returns></returns>
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public static Dictionary<double, int> GetBarValue(DataTable dt, string quota)
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{
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Type type = dt.Columns[quota].DataType;
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Dictionary<double, int> dict = new Dictionary<double, int>();
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double min = dt.AsEnumerable().Min(p => Convert.ToDouble(p[quota]));
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double max = dt.AsEnumerable().Max(p => Convert.ToDouble(p[quota]));
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double step = Convert.ToDouble(dt.AsEnumerable().FirstOrDefault()["STEP"]);
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for (double tempValue = min; tempValue <= max; tempValue += step)
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{
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var rowCount = dt.AsEnumerable().Where(p => Convert.ToDouble(p[quota]) > tempValue - step/2 && Convert.ToDouble(p[quota]) <= tempValue + step/2).Count();
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dict.Add(tempValue, rowCount);
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}
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return dict;
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}
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}
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}
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