Excel宏来修复折线图中重叠的数据标签 [英] Excel macro to fix overlapping data labels in line chart

问题描述

我正在搜索/尝试使用宏来修复带有一个或多个系列集合的折线图中数据标签的位置，以便它们不会重叠。

I am searching/trying to make a macro to fix the position of data labels in a line chart with one or multiple series collections so that they will not overlap each other.

我在想我的宏的一些方法，但当我试图让它我明白这对我来说太难了，我很头疼。

I was thinking of some ways for my macro but when I try to make it I understand that this is way too hard for me and I get headache.

有什么我错过了吗？

下面是一个带有重叠数据标签的示例图表：

Here's an example chart with overlapped data labels:

这里是一个示例图表，其中我手动修复数据标签：

Here's an example chart where I manually fixed the data labels:

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推荐答案

此任务基本上分为两个步骤：访问 / code>对象以获取标签和操作标签位置以避免重叠。

This task basically breaks down to two steps: access the Chart object to get the Labels, and manipulate the label positions to avoid overlap.

对于给定的样本，所有系列都绘制在公共X轴上，X值充分展开，标签在此维度中不重叠。因此，提供的解决方案只处理每个X点的标签组。

For the sample given all series are plotted on a common X-axis and the X values are sufficiently spread that labels don't overlap in this dimension. Therefore the solution offered only deals with groups of labels for each X point in turn.

Sub 解析图表，并为每个X点依次创建标签数组

This Sub parses the chart and creates an array of Labels for each X point in turn

Sub MoveLabels()
    Dim sh As Worksheet
    Dim ch As Chart
    Dim sers As SeriesCollection
    Dim ser As Series
    Dim i As Long, pt As Long
    Dim dLabels() As DataLabel

    Set sh = ActiveSheet
    Set ch = sh.ChartObjects("Chart 1").Chart
    Set sers = ch.SeriesCollection

    ReDim dLabels(1 To sers.Count)
    For pt = 1 To sers(1).Points.Count
        For i = 1 To sers.Count
            Set dLabels(i) = sers(i).Points(pt).DataLabel
        Next
        AdjustLabels dLabels  ' This Sub is to deal with the overlaps
    Next
End Sub

检测重叠

这会使用 Labels 的数组调用 AdjustLables 。这些标签需要检查重叠

Detect Overlaps

This calls AdjustLables with an array of Labels. These labels need to be checked for overlap

Sub AdjustLabels(ByRef v() As DataLabel)
    Dim i As Long, j As Long

    For i = LBound(v) To UBound(v) - 1
    For j = LBound(v) + 1 To UBound(v)
        If v(i).Left <= v(j).Left Then
            If v(i).Top <= v(j).Top Then
                If (v(j).Top - v(i).Top) < v(i).Height _
                And (v(j).Left - v(i).Left) < v(i).Width Then
                    ' Overlap!

                End If
            Else
                If (v(i).Top - v(j).Top) < v(j).Height _
                And (v(j).Left - v(i).Left) < v(i).Width Then
                    ' Overlap!

                End If
            End If
        Else
            If v(i).Top <= v(j).Top Then
                If (v(j).Top - v(i).Top) < v(i).Height _
                And (v(i).Left - v(j).Left) < v(j).Width Then
                    ' Overlap!

                End If
            Else
                If (v(i).Top - v(j).Top) < v(j).Height _
                And (v(i).Left - v(j).Left) < v(j).Width Then
                    ' Overlap!

                End If
            End If
        End If
    Next j, i
End Sub

移动标签

当检测到重叠时，您需要一个移动一个或两个标签而不创建另一个标签的策略

这里有许多可能性，您没有给予足够的细节来判断您的要求。

Moving Labels

When an overlap is detected you need a strategy that move one or both labels without creating another overlap.
There are many possibilities here, you havn'e given sufficient details to judge your requirements.

对于这种方法，你需要一个版本的Excel，它有DataLabel.Width和DataLabel.Height属性。版本2003 SP2（和，大概，早期）不。

For this approach to work you need a version of Excel that has DataLabel.Width and DataLabel.Height properties. Version 2003 SP2 (and, presumably, earlier) does not.

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