NAxis Class

In This Topic

The NAxis class is the base class of all axes displayed on charts.

Object Model

Syntax

Visual Basic
C#

'Declaration
 
<System.Runtime.InteropServices.ClassInterfaceAttribute(ClassInterfaceType.AutoDual)>
<System.ComponentModel.TypeConverterAttribute(Nevron.Chart.NAxisTypeConverter)>
<System.Xml.Serialization.XmlIncludeAttribute(Nevron.Chart.NCartesianAxis)>
<NIconAttribute("Resources.Icons.Axes.VertAxis.png")>
<System.SerializableAttribute()>
Public MustInherit Class NAxis 
   Inherits NAxisBase
   Implements INChartElement, INChartElementContainer, INHitTestable, INMaster, INPreOrderPaintable2D, INPreOrderPaintable3D, INSlave, Nevron.Dom.INAtomicElement, Nevron.Dom.INAttributeContainer, Nevron.Dom.INAttributeObserver, Nevron.Dom.INElement, Nevron.Dom.INElementContainer, Nevron.Dom.INIdentifiable, Nevron.Dom.INNamed, Nevron.Dom.INNode, Nevron.Dom.INNodeContainer, Nevron.Dom.INUniquelyIdentifiable, Nevron.Editors.INDomEditableNode, Nevron.INReferenceHolder, Nevron.INReferenceProvider

'Usage
 
Dim instance As NAxis

[System.Runtime.InteropServices.ClassInterface(ClassInterfaceType.AutoDual)]
[System.ComponentModel.TypeConverter(Nevron.Chart.NAxisTypeConverter)]
[System.Xml.Serialization.XmlInclude(Nevron.Chart.NCartesianAxis)]
[NIcon("Resources.Icons.Axes.VertAxis.png")]
[System.Serializable()]
public abstract class NAxis : NAxisBase, INChartElement, INChartElementContainer, INHitTestable, INMaster, INPreOrderPaintable2D, INPreOrderPaintable3D, INSlave, Nevron.Dom.INAtomicElement, Nevron.Dom.INAttributeContainer, Nevron.Dom.INAttributeObserver, Nevron.Dom.INElement, Nevron.Dom.INElementContainer, Nevron.Dom.INIdentifiable, Nevron.Dom.INNamed, Nevron.Dom.INNode, Nevron.Dom.INNodeContainer, Nevron.Dom.INUniquelyIdentifiable, Nevron.Editors.INDomEditableNode, Nevron.INReferenceHolder, Nevron.INReferenceProvider

Remarks

Each axis displayed by the Nevron Chart for .NET component is represented by a class derived from this class. You can obtain a reference to a standard chart axis with the help of the Axis method of the NChart class. The following code obtains a reference to the PrimaryY axis. Dim axis As NAxis = NChart.Axis(StandardAxis.PrimaryY); NAxis axis = NChart.Axis(StandardAxis.PrimaryY); A reference to a custom axis can be obtained with the help of the second override of the Axis mehtod which receives a Int32 parameter which is the axis id. The following code demonstrates this.

' create a custom vertical axis Dim axis As NAxis = NChart.Axes.AddCustomAxis(AxisOrientation.Vertical,AxisDockZone.FrontRight) ' save the axis id Dim nAxisId As Integer = axis.AxisId ... ' obtain a reference to the axis with the saved id Dim customAxis As NAxis = NChart.Axis(nAxisId)

// create a custom vertical axis NAxis axis = NChart.Axes.AddCustomAxis(AxisOrientation.Vertical, AxisDockZone.FrontRight); // save the axis id int nAxisId = axis.AxisId; ... // obtain a reference to the axis with the saved id NAxis customAxis = NChart.Axis(nAxisId);

The NAxis class implements support for the following axis features:

each has has an unique id accessible from the AxisId readonly property
A set of properties control the visual appearance of the axis. The most important ones are AxisShape, Border, FillStyle and Width
You can control the axis scale mode as well as access the axis scale object responsible for the respective scaling. The scale mode is determined by the ScaleMode property. You can obtain a reference to the associated scale object with the help of the DimensionScale, NumericScale, LogarithmicScale and DataTimeScale properties respectively.
You can control the appearance and the length of the major and minor ticks.
You can control the appearance of the major and minor gridlines as well as control on which chart walls they are displayed
You can specify the position of the axis. The PredefinedPosition property specifies a predefined axis position, while the PositionOffset property determines an offset from this position.
You can control the formatting of the values. The ValueFormatter property controls the applied formatting.
You can specify a title string as well as control its appearance. The Title property determines the axis title string. You can control the appearance of the axis title with the help of the NTextStyle object accessible from the TitleTextStyle property.
you can display the axis texts in stagger mode and control various aspects of this vizualization method. The stagger mode is enabled when the StaggerTexts property is set to true.
you can access the collection of contant lines associated with this axis with the help of the ConstLines property
you can access the collection of stripe lines associated with this axis with the help of the Stripes property

Inheritance Hierarchy

System.Object
   Nevron.Chart.NChartNode
      Nevron.Chart.NChartElement
         Nevron.Chart.NChartElementContainer
            Nevron.Chart.NAxisBase
               Nevron.Chart.NAxis
                  Nevron.Chart.NCartesianAxis
                  Nevron.Chart.NPolarAxis
                  Nevron.Chart.NRadarAxis
                  Nevron.Chart.NTernaryAxis

Requirements

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

NAxis Members
Nevron.Chart Namespace
NChart Class
StandardAxis Enumeration
AxisDockZone Enumeration
AxisOrientation Enumeration

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