53 lines
1.3 KiB
C#
53 lines
1.3 KiB
C#
using Aitex.Core.UI.ControlDataContext;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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namespace SicPM2.RecipeExecutions
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{
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public class RecipeEndDataItem
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{
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public RecipeEndDataItem(string name, List<HistoryDataItem> historyDataItem)
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{
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Name = name;
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HistoryDataItem = historyDataItem;
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}
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public List<HistoryDataItem> HistoryDataItem { get; set; }
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public string Name { get; }
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public string Max
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{
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get { return HistoryDataItem.Count > 0 ? HistoryDataItem.Max(item => item.value).ToString("F2") : "0"; }
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}
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public string Min
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{
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get { return HistoryDataItem.Count > 0 ? HistoryDataItem.Min(item => item.value).ToString("F2") : "0"; }
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}
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public string Mean
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{
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get { return HistoryDataItem.Count > 0 ? HistoryDataItem.Average(item => item.value).ToString("F2") : "0"; }
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}
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/// <summary>
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/// 样本标准差
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/// </summary>
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public string StdDev
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{
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get
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{
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if (HistoryDataItem.Count == 0)
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return "0";
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double avg = HistoryDataItem.Average(item => item.value); // 计算平均数
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double sum = HistoryDataItem.Sum(item => Math.Pow(item.value - avg, 2)); // 计算各数值与平均数的差值的平方，然后求和
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double stdDev = Math.Sqrt(sum / (HistoryDataItem.Count - 1)); // 除以数量减1，然后开方
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return stdDev.ToString("F2");
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}
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}
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}
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} |