在 ZedGraph 中的所有图中重新缩放 X

发布于 2024-12-18 20:15:47 字数 392 浏览 1 评论 0原文

我可以使用以下代码成功地仅在所有绘图中缩放 x 轴：

zg1.IsEnableHZoom = true;  
zg1.IsEnableVZoom = false;  
zg1.IsSynchronizeXAxes = true;  

foreach (GraphPane gp in zg1.MasterPane.paneList)  
{  
   > //What code can I put here?  
}

我的问题是，使用此代码，Y 轴根据数据的原始视图保持在最大值和最小值。我希望 Y 轴自动缩放，以便最大值和最小值仅基于由于 x 轴缩放而可见的数据（当然，每个图形窗格）。是否有一些命令或强力方法可以在上面显示的 for 循环中的每个图形窗格上使用？提前感谢任何人的帮助。

原文

I can successfully zoom x-only across all plots using the following code:

zg1.IsEnableHZoom = true;  
zg1.IsEnableVZoom = false;  
zg1.IsSynchronizeXAxes = true;  

foreach (GraphPane gp in zg1.MasterPane.paneList)  
{  
   > //What code can I put here?  
}

My problem is that using this code, the Y-axis remains at a max and min based on the original view of the data. I want the Y-axis to autoscale so that the max and min is ONLY based on the data visible due to the x-axis zoom (per graph pane, of course). Is there some command, or brute force method, that I can use on each of the graph panes in the for loop shown above? Thanks ahead of time for anyone's help.

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明月夜 2024-12-25 20:15:47

您可以在循环中使用它（假设 X 轴缩放 MinAuto 和 MaxAuto 为 false）

foreach (GraphPane gp in zg1.MasterPane.paneList)  
{
    gp.YAxis.Scale.MinAuto = true;
    gp.YAxis.Scale.MaxAuto = true;

    // This will force ZedGraph to calculate the Min and the Max of the Y axis
    // based on the X axis visible range
    gp.IsBoundedRanges = true;
}

zg1.MasterPane.AxisChange();

You can use this in the loop (assuming X Axis scale MinAuto and MaxAuto are false)

foreach (GraphPane gp in zg1.MasterPane.paneList)  
{
    gp.YAxis.Scale.MinAuto = true;
    gp.YAxis.Scale.MaxAuto = true;

    // This will force ZedGraph to calculate the Min and the Max of the Y axis
    // based on the X axis visible range
    gp.IsBoundedRanges = true;
}

zg1.MasterPane.AxisChange();

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书信已泛黄 2024-12-25 20:15:47

我以前也遇到过同样的问题，除了检查所有曲线点之外找不到其他方法。

我向 Paint 事件添加了一个事件处理程序来执行此操作，我确信有一些方法可以对此进行优化。

像这样的东西：

  private void graph_Paint(object sender, PaintEventArgs e)
  {
    double min = Double.MaxValue;
    double max = Double.MinValue;

    CurveItem curve = graph.GraphPane.CurveList[0];
    for (int i = 0; i < curve.Points.Count; i++)
    {
      if (curve.Points[i].X > graph.GraphPane.XAxis.Scale.Min &&
          curve.Points[i].X < graph.GraphPane.XAxis.Scale.Max)
      {
        min = Math.Min(curve.Points[i].Y, min);
        max = Math.Max(curve.Points[i].Y, max);
      }
    }

    if (min != Double.MaxValue)
    {
      graph.GraphPane.XAxis.Scale.Min = min;
      graph.GraphPane.XAxis.Scale.Max = max;
    }
  }

I had the same problem before and could not find a way other than to inspect all the curve points.

I added an event handler to the Paint event to do this, I'm sure there are ways this can be optimized.

Something like this:

  private void graph_Paint(object sender, PaintEventArgs e)
  {
    double min = Double.MaxValue;
    double max = Double.MinValue;

    CurveItem curve = graph.GraphPane.CurveList[0];
    for (int i = 0; i < curve.Points.Count; i++)
    {
      if (curve.Points[i].X > graph.GraphPane.XAxis.Scale.Min &&
          curve.Points[i].X < graph.GraphPane.XAxis.Scale.Max)
      {
        min = Math.Min(curve.Points[i].Y, min);
        max = Math.Max(curve.Points[i].Y, max);
      }
    }

    if (min != Double.MaxValue)
    {
      graph.GraphPane.XAxis.Scale.Min = min;
      graph.GraphPane.XAxis.Scale.Max = max;
    }
  }

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