本文介绍了ReDim Preserve “下标超出范围"的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我正在尝试将数据从 2 个双精度数组移动到 2 个不同的双精度数组.我不确定大小会是多少,因为我从第一个数组中取出一个随机样本并将其放入第二个数组中.
I am trying to move data from 2 Double Arrays to 2 different Double Arrays. I'm not sure what the size is going to be because I am taking a randomized sample out of the first arrays and putting it into the 2nd arrays.
当我添加 ReDim Preserve 行时,出现下标超出范围错误.
When I add the ReDim Preserve line I get the Subscript Out of Range error.
Function CreateTrainingSet(TrainingPercent As Double, Inputs() As Double, Outputs() As Double)
' Create Randomized Training set data
Dim TrainingInputs() As Double, TrainingOutputs() As Double
Dim i As Integer, j As Integer, count As Integer
'ReDim TrainingInputs(UBound(Inputs, 1), UBound(Inputs, 2))
'ReDim TrainingOutputs(UBound(Outputs, 1), UBound(Outputs, 2))
count = 0
' Move TraningPercent % of data from Inputs and Outputs to TrainingInputs and TrainingOutputs
For i = LBound(Inputs, 1) To UBound(Inputs, 1)
Dim ran As Double
ran = Rnd()
If ran <= TrainingPercent Then
count = count + 1
For j = LBound(Inputs, 2) To UBound(Inputs, 2)
ReDim Preserve TrainingInputs(1 To count, 1 To UBound(Inputs, 2))
TrainingInputs(count, j) = Inputs(i, j)
Next j
For j = LBound(Outputs, 2) To UBound(Outputs, 2)
ReDim Preserve TrainingOutputs(1 To count, 1 To UBound(Outputs, 2))
TrainingOutputs(count, j) = Outputs(i, j)
Next j
End If
Next i
For i = LBound(TrainingInputs, 1) To UBound(TrainingInputs, 1)
For j = LBound(TrainingInputs, 2) To UBound(TrainingInputs, 2)
Cells(i, j + 10).Value = TrainingInputs(i, j)
Next j
Next i
End Function
推荐答案
把上面的评论总结成一个答案:
To summarise the comments above into an answer:
- 使用
Preserve
时,您只能重新调整多维数组的最后一维.
- You can only redim the last dimension of a multi dimension array when using
Preserve
.
因此,为了调整多维数组的大小,有几个简单的选项:
Therefore in order to resize a multiple dimension array there are a couple of simple options:
- 如果只需要调整一个维度的大小,则翻转循环和逻辑,以便要调整大小的维度成为最后一个维度
- 如果必须调整两个维度的大小,请使用数组数组或数组集合,并根据需要更正循环
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