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ZedGraph X 轴缩放值

c#vb.netzedgraph
5

我想要增加我正在处理的图表的X轴上显示的值，方式如下：

X轴从0.125开始，然后显示0.250、0.5、1.0，然后数字为1.5、2、3、4、5、6、8、12，如下图所示（当然，这个图是不正确的，但我想展示X轴值的缩放）

enter image description here

目前我有这个：

enter image description here

为了做到这一点，我使用了以下代码（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

同时也有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

我已经完成了下列操作，问题几乎解决：

    '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

获取： 在这里输入图片描述
3
我喜欢ZedGraph的问题！作者决定停止项目真是件让人难过的事情。 - Uwe Keim
2
我认为仍然有许多程序员在使用ZedGraph：D - edgarmtze
1个回答
2
你需要的比例尺是非线性的，因此你需要将其改为类似于对数比例尺的东西。尝试调整AxisType枚举。乍一看，我猜你需要一个缩放的对数轴，或者如果那不起作用，只需使用序数轴。它不会“挤压”数据点，但至少它们将被正确标记。如果其他方法都无法解决问题，尝试使用字符串数组方法（基本上你可以用要标记的数据点填充出一个数组）。 祝你好运！
pane.XAxis.Type = AxisType.Log;

请注意，这将是一个纯粹的十进制对数坐标轴类型，因此它不会是您想要的完全相同的数字。
它是如何声明的 pane.X2Axis.type.Log？ - edgarmtze
1
我在上面的答案中包含了我最好的猜测。希望这能行！我现在没有测试的机会。请回报并告诉我们进展如何... - tmwoods
1
如果上面的内容不符合您的需求，这里有另一个资源供您参考。 - tmwoods
1
我按照你的建议去做了，但是还有另外一个问题，请看一下。因为你之前对这个问题的回答非常好。http://stackoverflow.com/questions/15044886/zedgraph-magnitude-issue-in-x2axis-in-vb-net-or-c-sharp - edgarmtze
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