图表使用#PERCENT值而不是默认值#VALY获得y轴刻度

问题描述

我想把数据点的#PERCENT值放在Y轴刻度而不是默认的#VALY。

Hi, i would like to put the #PERCENT value of data points in Y axis scale instead of default #VALY.

这可能吗？

或者我必须回溯图表已经包含百分比值的数据点值？

Or i have to retrive to chart the data points vales already with the percentage value?

示例

数据点1（x，y）=（a，3 ）数据点2（x，y）=（b，1）宇宙os 4，所以datapoint1 #PERCENT是75％，datapoint2 #PERCENT是25％我想放入y轴刻度0,25,50,75,100而不是0,1,2,3,4谢谢Hugo

Data point1 (x,y) = (a,3) Data point2 (x, y) = (b,1) The universe os 4, so datapoint1 #PERCENT is 75% and datapoint2 #PERCENT is 25% I want to put in y axis scale 0, 25, 50, 75, 100 instead of 0, 1, 2, 3, 4 Thanks Hugo

推荐答案

这可能是最简单的方法，是的。

This would probably be the easiest way, yes.

否则你将不得不修改生成的标签（使用
自定义标签 href ="http://msdn.microsoft.com/en-us/library/system.windows.forms.datavisualization.charting.chart.customize.aspx">
自定义事件）以反映正确的百分比。

Otherwise you will have to modify the generated labels (using custom labels in the customize event) to reflect the correct precentage.

Private Sub Chart1_Customize(ByVal sender As Object, ByVal e As System.EventArgs) Handles Chart1.Customize

	Dim total As Double = 0
	Dim s As Series = Chart1.Series(0)

	'Calculate total
	For Each dp As DataPoint In s.Points
		total += dp.YValues(0)
	Next

	'Modify automatically generated labels
	For Each lbl As CustomLabel In Chart1.ChartAreas(0).AxisY.CustomLabels
		lbl.Text = String.Format("{0:P2}", ((lbl.FromPosition + lbl.ToPosition) / 2) / total)
	Next

End Sub

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