ZedGraph中的图形缩放

Question

我想设置与我在文本框中输入的值相关的图表的比例。如果我没有输入任何值，图形应该会自动缩放。下面是我尝试过的代码：

     var y1 = graphPane1.AddYAxis("YAxis-1");

    var y2 = graphPane1.AddYAxis("YAxis-2");

    var y3 = graphPane1.AddYAxis("YAxis-3");


    LineItem myCurve1 = graphPane1.AddCurve(txtPlotTitle.Text, first_pointsList, Color.Blue, SymbolType.None);

    myCurve.YAxisIndex = y1;         

    graphPane1.YAxisList[y1].Scale.Min = double.Parse(textBox1.Text);
    graphPane1.YAxisList[y1].Scale.Max = double.Parse(textBox2.Text);



    LineItem myCurve2 = graphPane1.AddCurve(txtPlotTitle.Text, second_pointsList, Color.Yellow, SymbolType.None);

    myCurve2.YAxisIndex = y2;
    graphPane1.YAxisList[y2].Scale.Min = double.Parse(textBox3.Text);
    graphPane1.YAxisList[y2].Scale.Max = double.Parse(textBox4.Text);



   LineItem myCurve3 = graphPane1.AddCurve(txtPlotTitle.Text, third_pointsList, Color.Green, SymbolType.None);

    myCurve3.YAxisIndex = y3;
    graphPane1.YAxisList[y3].Scale.Min = double.Parse(textBox5.Text);
    graphPane1.YAxisList[y3].Scale.Max = double.Parse(textBox6.Text);

Answer 1

当文本值为空时，您需要将Scale.MinAuto和Scale.MaxAuto属性设置为true，然后调用GraphPane.AxisChange自动缩放轴。