在MS Chart控件中为x = 0绘制两个y值 [英] Plotting two y-values for x=0 in a MS Chart control

问题描述

我在Windows表格的MS Chart中发现了一个奇怪的行为.

I found a weird behavior in MS Chart for Windows Forms.

比方说，我想要一个散点图，其中包含两个点(1,10)和(1,20).我可以通过这种方式做到这一点:

Let's say I want to have a scatter plot with two points (1,10) and (1,20). I can do that in this way:

....
Series series = new Series();
series.ChartType = SeriesChartType.Point;
double[] x = { 1, 1 };
double[] y = { 10, 20 };
series.Points.DataBindXY(x, y);

那很好.但是现在我希望得到相同的结果，但是两个x值都应为0.

That works fine. But now I want the same result, but both x-values should be 0.

double[] x = { 0, 0 };
double[] y = { 10, 20 };
series.Points.DataBindXY(x, y);

在这种情况下，图表控件会在自动生成的" x位置1和2处创建两个数据点.它只是忽略给定的x值.如果我使用，则是相同的行为

In that case the chart control creates two data points at 'autogenerated' x positions 1 and 2. It just ignores the given x-values. It is the same behavior if I use

series.Points.AddXY(0, 10);
series.Points.AddXY(0, 20);

对于两个以上的数据点，我得到相同的效果.因此，事实证明，如果至少有一个x值不为零，则散点图将不起作用.

I get the same effect for more than two data points. So it turns out that scatter plot does not work if not at least one x-value is nonzero.

我认为可能的解决方法是使用多个序列，但这是不可接受的.

I think a possible workaround would be to use multiple series, but that is inacceptable.

有人对此行为有解释或针对此问题的解决方案吗?

Does anyone have a explanation for this behavior or a solution for this problem?

推荐答案

我自己找到了一个解决方案:

I found a solution by myself:

您必须添加

series.CustomProperties = "IsXAxisQuantitative=True";

您的代码.因此，x值实际上被视为值.我不知道如果使用BindXY函数，为什么这不言而喻.

to your code. So the x-values really are treated as values. I don't know why this is not self-evident if I use the BindXY function.

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