5

我想以这样的方式增加我正在处理的图表的 X 轴中显示的值：

X 轴从 开始0.125，然后显示0.250, 0.5, 1.0，然后数字1.5, 2, 3,4,5,6,8,12如下图（当然图表不正确，但我想显示 X 轴值的缩放比例）

在此处输入图像描述

目前我有这个：

在此处输入图像描述

为此我有（vb.net 版本）

Imports System.Collections.Generic
Imports System.ComponentModel
Imports System.Data
Imports System.Drawing
Imports System.Text
Imports System.Windows.Forms
Imports ZedGraph

Namespace Grid
    Partial Public Class graficaControl
        Inherits Form
        Public Sub New()
            InitializeComponent()
            DrawGraph()
        End Sub


        Private Function h(ByVal x As Double) As Double
            If x = 0 Then
                Return 1
            End If

            Return Math.Sin(x) / x
        End Function

        Private Function f(ByVal x As Double) As Double
            If x = 0 Then
                Return 1
            End If

            Return Math.Sin(x)
        End Function

        Private Function g(ByVal x As Double) As Double
            If x = 1 Then
                Return 0
            End If

            Return Math.Cos(x)
        End Function



        Private Sub DrawGraph()
            Dim masterPane As ZedGraph.MasterPane = zedGraph.MasterPane
            Dim pane As New GraphPane()
            masterPane.PaneList.Clear()

            pane.XAxis.Title.Text = "X"
            pane.XAxis.Title.FontSpec.IsUnderline = False
            pane.XAxis.Title.FontSpec.IsBold = True
            pane.XAxis.Title.FontSpec.FontColor = Color.Blue
            pane.YAxis.Title.Text = "Y"
            pane.Title.Text = "Right - FF1"
            pane.Title.FontSpec.Fill.IsVisible = True
            pane.Title.FontSpec.IsBold = False

            'X AXIS UP
            pane.X2Axis.IsVisible = True
            pane.XAxis.IsVisible = False
            pane.YAxis.Scale.IsReverse = True

            'Grid
            pane.XAxis.MajorGrid.IsVisible = True
            pane.XAxis.MajorGrid.DashOn = 10
            pane.XAxis.MajorGrid.DashOff = 5
            pane.YAxis.MajorGrid.IsVisible = True
            pane.YAxis.MajorGrid.DashOn = 10
            pane.YAxis.MajorGrid.DashOff = 5
            pane.YAxis.MinorGrid.IsVisible = True
            pane.YAxis.MinorGrid.DashOn = 1
            pane.YAxis.MinorGrid.DashOff = 2
            pane.XAxis.MinorGrid.IsVisible = True
            pane.XAxis.MinorGrid.DashOn = 1
            pane.XAxis.MinorGrid.DashOff = 2


            'FOR TEXT
            pane.Legend.Position = LegendPos.Float
            pane.Legend.Location.CoordinateFrame = CoordType.ChartFraction
            pane.Legend.Location.AlignH = AlignH.Right
            pane.Legend.Location.AlignV = AlignV.Bottom
            pane.Legend.Location.TopLeft = New PointF(1.0F - 0.02F, 1.0F - 0.02F)



            iGraph(pane)

            ' Add to master 
            masterPane.Add(pane)

            'later add second graph
            Using g As Graphics = CreateGraphics()
                masterPane.SetLayout(g, PaneLayout.SquareColPreferred)
           End Using

            zedGraph.AxisChange()
            zedGraph.Invalidate()
        End Sub

        Private Sub iGraph(ByVal izq As GraphPane)
            izq.CurveList.Clear()
            Dim list As New PointPairList()
            Dim xmin As Double = -50
            Dim xmax As Double = 3
            Dim x As Double = xmin
            While x <= xmax
                list.Add(x, h(x))
                x += 0.01
            End While
            Dim myCurve As LineItem = izq.AddCurve("sen(x)/x", list, Color.ForestGreen, SymbolType.None)
        End Sub
        Private WithEvents zedGraph As ZedGraph.ZedGraphControl

        Private Sub InitializeComponent()            
        Me.zedGraph = New ZedGraph.ZedGraphControl()
        Me.SuspendLayout()
        '
        'zedGraph
        '
        Me.zedGraph.Dock = System.Windows.Forms.DockStyle.Fill
        Me.zedGraph.Location = New System.Drawing.Point(0, 0)
        Me.zedGraph.Name = "Name"
        Me.zedGraph.ScrollGrace = 0.0R
        Me.zedGraph.ScrollMaxX = 0.0R
        Me.zedGraph.ScrollMaxY = 0.0R
        Me.zedGraph.ScrollMaxY2 = 0.0R
        Me.zedGraph.ScrollMinX = 0.0R
        Me.zedGraph.ScrollMinY = 0.0R
        Me.zedGraph.ScrollMinY2 = 0.0R
        Me.zedGraph.Size = New System.Drawing.Size(732, 461)
        Me.zedGraph.TabIndex = 1
        '
        'component
        '
        Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
        Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
        Me.ClientSize = New System.Drawing.Size(732, 461)
        Me.Controls.Add(Me.zedGraph)
        Me.Name = "graph"
        Me.Text = "test" 
        Me.ResumeLayout(False)

    End Sub 
End Class
End Namespace

也是c#版本

using Microsoft.VisualBasic;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Diagnostics;
using System.ComponentModel;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using ZedGraph;

namespace Grid
{
    public partial class graficaControl : Form
    {
        public graficaControl()
        {
            InitializeComponent();
            DrawGraph();
        }


        private double h(double x)
        {
            if (x == 0) {
                return 1;
            }

            return Math.Sin(x) / x;
        }

        private double f(double x)
        {
            if (x == 0) {
                return 1;
            }

            return Math.Sin(x);
        }

        private double g(double x)
        {
            if (x == 1) {
                return 0;
            }

            return Math.Cos(x);
        }



        private void DrawGraph()
        {
            ZedGraph.MasterPane masterPane = zedGraph.MasterPane;
            GraphPane pane = new GraphPane();
            masterPane.PaneList.Clear();

            pane.XAxis.Title.Text = "X";
            pane.XAxis.Title.FontSpec.IsUnderline = false;
            pane.XAxis.Title.FontSpec.IsBold = true;
            pane.XAxis.Title.FontSpec.FontColor = Color.Blue;
            pane.YAxis.Title.Text = "Y";
            pane.Title.Text = "Right - FF1";
            pane.Title.FontSpec.Fill.IsVisible = true;
            pane.Title.FontSpec.IsBold = false;

            //X AXIS UP
            pane.X2Axis.IsVisible = true;
            pane.XAxis.IsVisible = false;
            pane.YAxis.Scale.IsReverse = true;

            //Grid
            pane.XAxis.MajorGrid.IsVisible = true;
            pane.XAxis.MajorGrid.DashOn = 10;
            pane.XAxis.MajorGrid.DashOff = 5;
            pane.YAxis.MajorGrid.IsVisible = true;
            pane.YAxis.MajorGrid.DashOn = 10;
            pane.YAxis.MajorGrid.DashOff = 5;
            pane.YAxis.MinorGrid.IsVisible = true;
            pane.YAxis.MinorGrid.DashOn = 1;
            pane.YAxis.MinorGrid.DashOff = 2;
            pane.XAxis.MinorGrid.IsVisible = true;
            pane.XAxis.MinorGrid.DashOn = 1;
            pane.XAxis.MinorGrid.DashOff = 2;


            //FOR TEXT
            pane.Legend.Position = LegendPos.Float;
            pane.Legend.Location.CoordinateFrame = CoordType.ChartFraction;
            pane.Legend.Location.AlignH = AlignH.Right;
            pane.Legend.Location.AlignV = AlignV.Bottom;
            pane.Legend.Location.TopLeft = new PointF(1f - 0.02f, 1f - 0.02f);



            iGraph(pane);

            // Add to master 
            masterPane.Add(pane);

            //later add second graph
            using (Graphics g = CreateGraphics()) {
                masterPane.SetLayout(g, PaneLayout.SquareColPreferred);
            }

            zedGraph.AxisChange();
            zedGraph.Invalidate();
        }

        private void iGraph(GraphPane izq)
        {
            izq.CurveList.Clear();
            PointPairList list = new PointPairList();
            double xmin = -50;
            double xmax = 3;
            double x = xmin;
            while (x <= xmax) {
                list.Add(x, h(x));
                x += 0.01;
            }
            LineItem myCurve = izq.AddCurve("sen(x)/x", list, Color.ForestGreen, SymbolType.None);
        }
        private ZedGraph.ZedGraphControl zedGraph;

        private void InitializeComponent()
        {
            this.zedGraph = new ZedGraph.ZedGraphControl();
            this.SuspendLayout();
            //
            //zedGraph
            //
            this.zedGraph.Dock = System.Windows.Forms.DockStyle.Fill;
            this.zedGraph.Location = new System.Drawing.Point(0, 0);
            this.zedGraph.Name = "Name";
            this.zedGraph.ScrollGrace = 0.0;
            this.zedGraph.ScrollMaxX = 0.0;
            this.zedGraph.ScrollMaxY = 0.0;
            this.zedGraph.ScrollMaxY2 = 0.0;
            this.zedGraph.ScrollMinX = 0.0;
            this.zedGraph.ScrollMinY = 0.0;
            this.zedGraph.ScrollMinY2 = 0.0;
            this.zedGraph.Size = new System.Drawing.Size(732, 461);
            this.zedGraph.TabIndex = 1;
            //
            //component
            //
            this.AutoScaleDimensions = new System.Drawing.SizeF(6f, 13f);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(732, 461);
            this.Controls.Add(this.zedGraph);
            this.Name = "graph";
            this.Text = "test";
            this.ResumeLayout(false);

        }
    }
}

更新

我做了以下，几乎解决了

    'disable old axis scale
    pane.X2Axis.Scale.IsVisible = False
    pane.X2Axis.MajorTic.IsAllTics = False

    ' new labels
    Dim x_vals = {0.125, 0.25, 0.5, 0.75, 1.0, 1.5, 2.0, 3.0, 4.0, 6.0, 8.0, 12.0, 16.0}

    ' create custom labels and custom grid-lines using LineObj
    For Each val As Double In x_vals

        'add line
        Dim line As New LineObj(pane.YAxis.Scale.Min, val, pane.YAxis.Scale.Max, val)
        line.Line.Style = System.Drawing.Drawing2D.DashStyle.Dash
        line.Line.Width = 1.0F
        pane.GraphObjList.Add(line)
        'add label
        Dim text As New TextObj(val.ToString(), pane.YAxis.Scale.Min, val)
        text.Location.AlignH = AlignH.Right
        text.FontSpec.Border.IsVisible = False
        text.FontSpec.Fill.IsVisible = False
        pane.GraphObjList.Add(text)
    Next

得到：

在此处输入图像描述

4

1 回答 1

2

您想要的比例是非线性的，因此您需要将其更改为对数比例。尝试使用AxisType Enumeration。乍一看，我猜你需要一个缩放的对数轴，或者如果这不起作用，只需使用一个序数轴。它不会“挤压”数据点，但至少它们会被正确标记。如果一切都失败了，请尝试使用字符串数组方法（基本上你用你想要标记的数据点填写一个数组）。祝你好运！

前任：

pane.XAxis.Type = AxisType.Log;

请注意，这将是一个以 10 为底的对数轴类型，因此不会是您想要的完全相同的数字。

于 2013-02-26T17:25:21.480 回答