C# Excel 为图表添加趋势线、偏差线

时间 2019-11-19

标签 c# excel 图表添加趋势线偏差栏目 C# 繁體版

原文原文链接

Excel图表可以将数据可视化，在图表中另行添加趋势线和偏差线，可对数据进行进一步的数据分析和统计的可视化处理。Excel中的趋势线可用于趋势预测/回归分析，共6中类型：指数（X），线性（L），对数（0），多项式（P），幂（W），移动平均（M）。偏差线可用于显示潜在的偏差或相对于系列中每一个数据标志的不肯定程度。Excel中可设置偏差线的显示方向：正负误差，负误差，正误差；以及设置偏差类型及偏差量：固定值，百分比，标准误差，标准偏差，自定义类型。html

本篇文章主要介绍，使用免费版的Free Spire.XLS在C#中独立建立Excel文档，生成折线图、柱状图，并添加趋势线和偏差线。spa

需添加的命名空间3d

using Spire.Xls;
using System.Drawing;

步骤详解：
excel

步骤一：独立建立Excel文件和表单。code

            Workbook workbook = new Workbook();
            workbook.CreateEmptySheets( 1);
            Worksheet sheet = workbook.Worksheets[ 0];

步骤二：为Excel单元格添加示例数据。htm

            sheet.Name = " 偏差线和趋势线演示 ";
            sheet.Range[ " A1 "].Value = " 月份 ";
            sheet.Range[ " A2 "].Value = " 一月 ";
            sheet.Range[ " A3 "].Value = " 二月 ";
            sheet.Range[ " A4 "].Value = " 三月 ";
            sheet.Range[ " A5 "].Value = " 四月 ";
            sheet.Range[ " A6 "].Value = " 五月 ";
            sheet.Range[ " A7 "].Value = " 六月 ";
            sheet.Range[ " B1 "].Value = " 计划量 ";
            sheet.Range[ " B2 "].NumberValue = 3.3;
            sheet.Range[ " B3 "].NumberValue = 2.5;
            sheet.Range[ " B4 "].NumberValue = 2.0;
            sheet.Range[ " B5 "].NumberValue = 3.7;
            sheet.Range[ " B6 "].NumberValue = 4.5;
            sheet.Range[ " B7 "].NumberValue = 4.0;
            sheet.Range[ " C1 "].Value = " 实际量 ";
            sheet.Range[ " C2 "].NumberValue = 3.8;
            sheet.Range[ " C3 "].NumberValue = 3.2;
            sheet.Range[ " C4 "].NumberValue = 1.7;
            sheet.Range[ " C5 "].NumberValue = 3.5;
            sheet.Range[ " C6 "].NumberValue = 4.5;
            sheet.Range[ " C7 "].NumberValue = 4.3;

步骤三：生成折线图，为其添加趋势线和偏差线。blog

             // 生成折线图，设置位置
            Chart chart = sheet.Charts.Add(ExcelChartType.Line);
            chart.DataRange = sheet.Range[ " B1:B7 "];
            chart.SeriesDataFromRange = false;
            chart.TopRow = 6;
            chart.BottomRow = 25;
            chart.LeftColumn = 2;
            chart.RightColumn = 9;
            chart.ChartTitle = " 百分比正误差偏差线和对数趋势线示例 ";
            chart.ChartTitleArea.IsBold = true;
            chart.ChartTitleArea.Size = 12;
            Spire.Xls.Charts.ChartSerie cs1 = chart.Series[ 0];
            cs1.CategoryLabels = sheet.Range[ " A2:A7 "];
             // 添加对数趋势线
            cs1.TrendLines.Add(TrendLineType.Logarithmic);
             // 添加10%正误差偏差线
            cs1.ErrorBar( true, ErrorBarIncludeType.Plus, ErrorBarType.Percentage, 10);

步骤四：生成柱状图，并为其添加趋势线和偏差线。

            // 生成柱状图做为对照组
            Chart chart2 = sheet.Charts.Add(ExcelChartType.ColumnClustered);
            chart2.DataRange = sheet.Range[ " B1:C7 "];
            chart2.SeriesDataFromRange = false;
            chart2.TopRow = 6;
            chart2.BottomRow = 25;
            chart2.LeftColumn = 10;
            chart2.RightColumn = 17;
            chart2.ChartTitle = " 正负标准偏差偏差线和指数趋势线示例 ";
            chart2.ChartTitleArea.IsBold = true;
            chart2.ChartTitleArea.Size = 12;
            Spire.Xls.Charts.ChartSerie cs2 = chart2.Series[ 0];
            cs2.CategoryLabels = sheet.Range[ " A2:A7 "];
             // 添加标准偏差负偏差0.3的偏差线
            cs2.ErrorBar( true, ErrorBarIncludeType.Minus, ErrorBarType.StandardError, 0.3);
             // 添加指数趋势线
            cs2.TrendLines.Add(TrendLineType.Exponential);
            Spire.Xls.Charts.ChartSerie cs3 = chart2.Series[ 1];
             // 添加标准偏差正负偏差0.5的偏差线
            cs3.ErrorBar( true, ErrorBarIncludeType.Both, ErrorBarType.StandardError, 0.5);

步骤五：保存Excel文档，启动查看效果。

workbook.SaveToFile( " S3.xlsx ", ExcelVersion.Version2010);
System.Diagnostics.Process.Start( " S3.xlsx ");

效果图：文档

纯图表：get

完整代码：数据分析

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Spire.Xls;
using System.Drawing;

namespace ConsoleApplication2
{
     class Program
    {
         static void Main( string[] args)
        {

            Workbook workbook = new Workbook();
            workbook.CreateEmptySheets( 1);
            Worksheet sheet = workbook.Worksheets[ 0];

            sheet.Name = " 偏差线和趋势线演示 ";
            sheet.Range[ " A1 "].Value = " 月份 ";
            sheet.Range[ " A2 "].Value = " 一月 ";
            sheet.Range[ " A3 "].Value = " 二月 ";
            sheet.Range[ " A4 "].Value = " 三月 ";
            sheet.Range[ " A5 "].Value = " 四月 ";
            sheet.Range[ " A6 "].Value = " 五月 ";
            sheet.Range[ " A7 "].Value = " 六月 ";
            sheet.Range[ " B1 "].Value = " 计划量 ";
            sheet.Range[ " B2 "].NumberValue = 3.3;
            sheet.Range[ " B3 "].NumberValue = 2.5;
            sheet.Range[ " B4 "].NumberValue = 2.0;
            sheet.Range[ " B5 "].NumberValue = 3.7;
            sheet.Range[ " B6 "].NumberValue = 4.5;
            sheet.Range[ " B7 "].NumberValue = 4.0;
            sheet.Range[ " C1 "].Value = " 实际量 ";
            sheet.Range[ " C2 "].NumberValue = 3.8;
            sheet.Range[ " C3 "].NumberValue = 3.2;
            sheet.Range[ " C4 "].NumberValue = 1.7;
            sheet.Range[ " C5 "].NumberValue = 3.5;
            sheet.Range[ " C6 "].NumberValue = 4.5;
            sheet.Range[ " C7 "].NumberValue = 4.3;

            Chart chart = sheet.Charts.Add(ExcelChartType.Line);
            chart.DataRange = sheet.Range[ " B1:B7 "];
            chart.SeriesDataFromRange = false;
            chart.TopRow = 6;
            chart.BottomRow = 25;
            chart.LeftColumn = 2;
            chart.RightColumn = 9;
            chart.ChartTitle = " 百分比正误差偏差线和对数趋势线示例 ";
            chart.ChartTitleArea.IsBold = true;
            chart.ChartTitleArea.Size = 12;
            Spire.Xls.Charts.ChartSerie cs1 = chart.Series[ 0];
            cs1.CategoryLabels = sheet.Range[ " A2:A7 "];
            cs1.TrendLines.Add(TrendLineType.Logarithmic);
            cs1.ErrorBar( true, ErrorBarIncludeType.Plus, ErrorBarType.Percentage, 10);
            Chart chart2 = sheet.Charts.Add(ExcelChartType.ColumnClustered);
            chart2.DataRange = sheet.Range[ " B1:C7 "];
            chart2.SeriesDataFromRange = false;
            chart2.TopRow = 6;
            chart2.BottomRow = 25;
            chart2.LeftColumn = 10;
            chart2.RightColumn = 17;
            chart2.ChartTitle = " 正负标准偏差偏差线和指数趋势线示例 ";
            chart2.ChartTitleArea.IsBold = true;
            chart2.ChartTitleArea.Size = 12;
            Spire.Xls.Charts.ChartSerie cs2 = chart2.Series[ 0];
            cs2.CategoryLabels = sheet.Range[ " A2:A7 "];
            cs2.ErrorBar( true, ErrorBarIncludeType.Minus, ErrorBarType.StandardError, 0.3);
            cs2.TrendLines.Add(TrendLineType.Exponential);
            Spire.Xls.Charts.ChartSerie cs3 = chart2.Series[ 1];
            cs3.ErrorBar( true, ErrorBarIncludeType.Both, ErrorBarType.StandardError, 0.5);

            workbook.SaveToFile( " S3.xlsx ", ExcelVersion.Version2010);
            System.Diagnostics.Process.Start( " S3.xlsx ");         }     } }