我想获得柱形图,我需要在y轴上有百分比值,并且应该重新计算和缩放.
我已经看到了一些建议来指定最小值和最大值(chart.ChartAreas [0] .AxisY.Minimum = 0),但它没有根据百分比调整列高.任何帮助将不胜感激.
以下是我到目前为止所做的工作
foreach (var value in labels)
{
chart.Legends[value].Alignment = StringAlignment.Center;
chart.Legends[value].Docking = Docking.Bottom;
chart.Series[value].ChartType = SeriesChartType.Column;
chart.Series[value].IsValueShownAsLabel = true;
chart.Series[value].Label = "#PERCENT{P0}";
chart.ChartAreas[0].AxisX.MajorGrid.Enabled = false;
chart.ChartAreas[0].AxisY.MajorGrid.Enabled =false;
chart.ChartAreas[0].AxisY.Minimum=0;
// chart.ChartAreas[0].RecalculateAxesScale();
chart.BringToFront();
if (count == 0 && comp.Value != null)
chart.Series[value].Points.Add(comp.Value[0]);
else if (count >= 1 && comp.Value != null && comp.Value.Count() > count)
chart.Series[value].Points.Add(comp.Value[count]);
else
chart.Series[value].Points.Add(0);
count++;
}
Y轴应显示百分比,列高度应调整为y轴百分比值.
最佳答案 这是一个示例,显示有关图表中数据的各种信息:
>工具提示中的X& Y值
>值与列上总数的百分比
> Y轴上最大值的百分比
Series S = chart1.Series[0];
ChartArea CA = chart1.ChartAreas[0];
Axis AY = CA.AxisY;
S.Points.AddXY(1, 10); S.Points.AddXY(2, 40);
S.Points.AddXY(3, 50); S.Points.AddXY(4, 100);
S.Points.AddXY(5, 111);
S.IsValueShownAsLabel = true;
S.Label = "#PERCENT{P0}";
S.ToolTip = "#VALX{#.##}" + " : " + "#VALY1{#.##}";
double max = S.Points.Max(x => x.YValues[0]);
for (int i = 0; i < S.Points.Count; i++)
{
DataPoint dp = S.Points[i];
double y0 = S.Points[i].YValues[0];
AY.CustomLabels.Add(y0, y0 + 1, (y0 / max * 100f).ToString("0.0") + "%");
}
当然,你可以随意改变它.