DynamicDataDisplay缩放和工具提示在具有同步X轴的实时图表上 [英] DynamicDataDisplay zoom and tooltips on realtime charts with syncronous X axis

问题描述

前一段时间，我发布了问题。我找到了解决方案，但我仍然有一些问题。

• 我需要放大和缩小在Y轴上的StrokeChart，日期。我不知道为什么，但范围不会改变下一个添加点。实际上Y轴上的范围是0-1。很奇怪，但我可以用


• 生活。第二个问题是：如何在图表区域上配置缩放？


• 最后，但不是最不重要的：如何使用ObservableCollection构建图表上的实时工具提示？它可以为EnumerableDataSource做容易。您可以检查此和 this 。我试着做用户Thecentury描述的事情，但它不工作。我甚至添加方法 AddMapping 到ObservableCollection并重建库，但它仍然不工作。所以我不知道下一步该做什么。

我非常感谢您的帮助和建议。
谢谢

解决方案

关于缩放我认为我设法解决了这个问题。 / p>

在 MouseNavigation.cs 中添加新属性

  // 2014-02-22  -  MPEKALSKI  - 添加的属性，使可能
限制只放大一个轴
私人bool？ _zoomX; 
 ///< summary> 
 ///允许/禁止沿X轴进行缩放的属性。默认允许（true）。 
 ///< / summary> 
 public bool zoomX 
 {
 get {return _zoomX ??真正; } 
 set {_zoomX = value; } 
} 
 private bool？ _zoomY; 
 ///< summary> 
 ///允许/禁止沿Y轴进行缩放的属性。默认允许（true）。 
 ///< / summary> 
 public bool zoomY 
 {
 get {return _zoomY ??真正; } 
 set {_zoomY = value; } 
} 
  

在同一个类中修改方法

  private void MouseWheelZoom（Point mousePos，int wheelRotationDelta）
  

取代

  Viewport.Visible = Viewport.Visible.Zoom（zoomTo，zoomSpeed）; 
  

  // 2014-02-23  -  MPEKALSKI  - 如果我们不允许改变Y 
 //然后保持旧的值，通过类推X 
 Rect zoomedRect = Viewport.Visible。缩放（zoomTo，zoomSpeed）; 
 if（zoomY == false）{zoomedRect.Y = Viewport.Visible.Y; 
 zoomedRect.Height = Viewport.Visible.Height; } 
 if（zoomX == false）{zoomedRect.X = Viewport.Visible.X; 
 zoomedRect.Width = Viewport.Visible.Width; } 
 Viewport.Visible = zoomedRect; 
 

现在的使用是非常简单的给定chartPlotter对象只是设置属性zoomY或zoomX为false以防止缩放此轴。

  chartPlotter2.MouseNavigation.zoomY = false; 
  

我不知道这是最好的解决方案，但它适用于我。

Some time ago I posted the question about synchronous charts. I found the solution here, but I still have some problems.

• I need to zoom in and out on Y axis on StrokeChart to see my date. I don't know why, but the range doesn't change on next added point. Actually range is 0-1 on Y axis. It's strange, but I can live with that
• The second question is: how to configure zoom on chart area? I want it to zoom only Y axis when I scroll up/down.
• And last, but not least: How to make realtime tooltips on chart which is build using ObservableCollection? It can be done for EnumerableDataSource easy. you can check this and this. I tried to do thing described by user "Thecentury", but it doesn't work. I even added method AddMapping to ObservableCollection and rebuilt the library, but it still doesn't work. So I don't know what to do next.

I appreciate for any help and advice. Thank you

解决方案

Regarding zooming I think I managed to solve the problem.

In MouseNavigation.cs add new properties

// 2014-02-22 - MPEKALSKI - added property to make possible
                         limiting on zoom on only one axis
private bool? _zoomX;
/// <summary>
/// Property for allowing/disallowing for zoom along X axis. By default allowed (true).
/// </summary>
public bool zoomX
{
    get { return _zoomX ?? true; }
    set { _zoomX = value; }
}
private bool? _zoomY;
/// <summary>
/// Property for allowing/disallowing for zoom along Y axis. By default allowed (true).
/// </summary>
public bool zoomY
{
    get { return _zoomY ?? true; }
    set { _zoomY = value; }
}     

In the same class modify the method

private void MouseWheelZoom(Point mousePos, int wheelRotationDelta)

by substituting

Viewport.Visible = Viewport.Visible.Zoom(zoomTo, zoomSpeed);

with

    // 2014-02-23 - MPEKALSKI - if we do not allow for change in Y
    //                          then keep the old value, by analogy for X
    Rect zoomedRect = Viewport.Visible.Zoom(zoomTo, zoomSpeed);
    if (zoomY == false) { zoomedRect.Y = Viewport.Visible.Y; 
                          zoomedRect.Height = Viewport.Visible.Height; }
    if (zoomX == false) { zoomedRect.X = Viewport.Visible.X;
                          zoomedRect.Width = Viewport.Visible.Width; }
    Viewport.Visible = zoomedRect;

The use now is pretty straightforward given chartPlotter object just set properties zoomY or zoomX to false to prevent zooming along this axis.

chartPlotter2.MouseNavigation.zoomY = false;

I do not know is it the most optimal solution, but it works for me.

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