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分享急求： ZedGraph C# 雷达图 应用实例
第一次使用ZedGraph 想用它来绘制一个类似Excel中的雷达图。在zedgraph_source包里看到有 RadarPointList.cs 这个类，但是不知道该怎么用，求给位指点指点或最好给个应用实例。感激不尽！
RadarPointList.cs 源码如下：
RadarPointList.cs 源码如下：
//============================================================================
//RadarPointList Class
//Copyright ?2006 John Champion, Jerry Vos
//
//This library is free software; you can redistribute it and/or
//modify it under the terms of the GNU Lesser General Public
//License as published by the Free Software Foundation; either
//version 2.1 of the License, or (at your option) any later version.
//
//This library is distributed in the hope that it will be useful,
//but WITHOUT ANY WARRANTY; without even the implied warranty of
//MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
//Lesser General Public License for more details.
//
//You should have received a copy of the GNU Lesser General Public
//License along with this library; if not, write to the Free Software
//Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//=============================================================================
using System;
using System.Drawing;
using System.Collections.Generic;
namespace ZedGraph
{
/// <summary>
/// A class containing a set of data values to be plotted as a RadarPlot.
/// This class will effectively convert the data into <see cref="PointPair" /> objects
/// by converting the polar coordinates to rectangular coordinates
/// </summary>
/// <seealso cref="BasicArrayPointList" />
/// <seealso cref="IPointList" />
/// <seealso cref="IPointListEdit" />
///
/// <author>Jerry Vos and John Champion</author>
/// <version> $Revision: 3.5 $ $Date: 2007-04-16 00:03:02 $ </version>
[Serializable]
public class RadarPointList : List<PointPair>, IPointList, IPointListEdit
{
#region Fields
/// <summary>
/// Default to clockwise rotation as this is the standard for radar charts
/// </summary>
private bool _clockwise = true;
/// <summary>
/// Default to 90 degree rotation so main axis is in the 12 o'clock position,
/// which is the standard for radar charts.
/// </summary>
private double _rotation = 90;
#endregion
#region Properties
/// <summary>
/// Indexer to access the specified <see cref="PointPair"/> object by
/// its ordinal position in the list. This method does the calculations
/// to convert the data from polar to rectangular coordinates.
/// </summary>
/// <param name="index">The ordinal position (zero-based) of the
/// <see cref="PointPair"/> object to be accessed.</param>
/// <value>A <see cref="PointPair"/> object reference.</value>
public new PointPair this[int index]
{
get
{
int count = this.Count;
// The last point is a repeat of the first point
if ( index == count - 1 )
index = 0;
if ( index < 0 || index >= count )
return null;
PointPair pt = (PointPair)base[index];
// double theta = (double) index / (double) count * 2.0 * Math.PI;
double rotationRadians = _rotation * Math.PI / 180;
double theta = rotationRadians + ( _clockwise ? -1.0d : 1.0d ) *
( (double) index / (double) (count-1) * 2.0 * Math.PI);
double x = pt.Y * Math.Cos( theta );
double y = pt.Y * Math.Sin( theta );
return new PointPair( x, y, pt.Z, (string) pt.Tag );
}
set
{
int count = this.Count;
// The last point is a repeat of the first point
if ( index == count - 1 )
index = 0;
if ( index < 0 || index >= count )
return;
PointPair pt = (PointPair)base[index];
pt.Y = Math.Sqrt( value.X * value.X + value.Y * value.Y );
}
}
/// <summary>
/// Indicates if points should be added in clockwise or counter-clockwise order
/// </summary>
public bool Clockwise
{
get { return _clockwise; }
set { _clockwise = value; }
}
/// <summary>
/// Sets the angular rotation (starting angle) for the initial axis
/// </summary>
public double Rotation
{
get { return _rotation; }
set { _rotation = value; }
}
/// <summary>
/// Get the raw data
/// </summary>
/// <param name="index"></param>
/// <returns></returns>
private PointPair GetAt( int index )
{
return base[index];
}
/// <summary>
/// gets the number of points available in the list
/// </summary>
public new int Count
{
get { return base.Count + 1; }
}
#endregion
#region Constructors
/// <summary>
/// Default Constructor
/// </summary>
public RadarPointList() : base()
{
}
/// <summary>
/// Copy Constructor
/// </summary>
public RadarPointList( RadarPointList rhs )
{
for ( int i = 0; i < rhs.Count; i++ )
this.Add( rhs.GetAt(i) );
}
/// <summary>
/// Implement the <see cref="ICloneable" /> interface in a typesafe manner by just
/// calling the typed version of <see cref="Clone" />
/// </summary>
/// <returns>A deep copy of this object</returns>
object ICloneable.Clone()
{
return this.Clone();
}
/// <summary>
/// Typesafe, deep-copy clone method.
/// </summary>
/// <returns>A new, independent copy of this class</returns>
public RadarPointList Clone()
{
return new RadarPointList( this );
}
#endregion
#region Methods
/*
* /// <summary>
/// Add the specified PointPair to the collection.
/// </summary>
/// <param name="pt">The PointPair to be added</param>
/// <returns>The ordinal position in the list where the point was added</returns>
public int Add( PointPair pt )
{
return List.Add( pt );
}
/// <summary>
/// Add a single point to the <see cref="RadarPointList"/> from a value of type double.
/// </summary>
/// <param name="r">The radial coordinate value</param>
/// <returns>The zero-based ordinal index where the point was added in the list.</returns>
/// <seealso cref="IList.Add"/>
public int Add( double r )
{
return List.Add( new PointPair( PointPair.Missing, r ) );
}
*/
/// <summary>
/// Add a single point to the <see cref="RadarPointList"/> from two values of type double.
/// </summary>
/// <param name="r">The radial coordinate value</param>
/// <param name="z">The 'Z' coordinate value, which is not normally used for plotting,
/// but can be used for <see cref="FillType.GradientByZ" /> type fills</param>
/// <returns>The zero-based ordinal index where the point was added in the list.</returns>
public void Add( double r, double z )
{
Add( new PointPair( PointPair.Missing, r, z ) );
}
#endregion
}
}
...全文
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黄大仙儿 2014-04-20
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chartcontrol 也没用过，能给些这方面的资料 或 雷达图的应用实例吗？谢谢！[/quote]
chartcontrol 也没用过，能给些这方面的资料 或 雷达图的应用实例吗？谢谢！[/quote]
devexpress 下载程序和破解程序 http://download.csdn.net/detail/cxs198699/5889293
里面有chartcontrol控件
你可以选择你想要什么类型的 这里就有雷达图
它的demo里都有这些，而且有源码
黄大仙儿 2014-04-20
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http://www.codeproject.com/Articles/5431/A-flexible-charting-library-for-NET
这里没有的话，应该是没有雷达图的demo
建议用chartcontrol
-学无止境 2014-04-20
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chartcontrol 也没用过，能给些这方面的资料 或 雷达图的应用实例吗？谢谢！
