excel卷积函数
时间: 2023-07-01 13:26:57 浏览: 107
在Excel中,可以使用CORREL函数进行卷积操作。CORREL函数的语法如下:
```
CORREL(array1, array2)
```
其中,array1和array2是两个需要进行卷积的数组,可以是单行、单列或者多行、多列的区域。
例如,我们有两个数组,分别是{1,2,3,4}和{2,1},我们可以使用以下公式进行卷积操作:
```
=CORREL({1,2,3,4},{2,1})
```
按下回车键后,将返回卷积后的结果,即{4,7,10,9}。
相关问题
使用VBA帮我写一个excel的卷积函数,要求对两个任意大小的选定区域进行线性卷积,卷积结果按照纵向显示在excel表格中
好的,以下是一个简单的VBA函数,可以计算两个选定区域的线性卷积,并将结果按照纵向显示在Excel表格中:
```
Function Convolution(rng1 As Range, rng2 As Range) As Variant
'获取输入区域的大小
Dim rows1 As Integer, cols1 As Integer
Dim rows2 As Integer, cols2 As Integer
rows1 = rng1.Rows.Count
cols1 = rng1.Columns.Count
rows2 = rng2.Rows.Count
cols2 = rng2.Columns.Count
'创建输出数组
Dim output() As Double
ReDim output(1 To rows1 + rows2 - 1, 1 To 1)
'计算卷积
Dim i As Integer, j As Integer, k As Integer
For i = 1 To rows1 + rows2 - 1
output(i, 1) = 0
For j = 1 To cols1
For k = 1 To cols2
If i - k + 1 > 0 And i - k + 1 <= rows1 Then
output(i, 1) = output(i, 1) + rng1(i - k + 1, j).Value * rng2(rows2 - k + 2 - (i - 1), j).Value
End If
Next k
Next j
Next i
'将结果输出到表格中
Convolution = output
End Function
```
使用方法:在Excel中打开Visual Basic编辑器,将以上代码复制粘贴到一个新的模块中。然后在Excel表格中选定两个区域(大小可以不同),在一个空白单元格中输入以下公式:
```
=Convolution(A1:B5, C1:D3)
```
其中,A1:B5和C1:D3为选定的两个区域。按下回车键后,将会在当前单元格下方生成一个与卷积结果大小相同的区域,并显示卷积结果。
帮我写一个用于excel 线性卷积的vba函数
以下是一个用于 Excel 线性卷积的 VBA 函数示例:
```
Function LinearConvolution(rng1 As Range, rng2 As Range) As Variant
' 获取输入区域的大小
Dim rows1 As Integer, rows2 As Integer, cols1 As Integer, cols2 As Integer
rows1 = rng1.Rows.Count
cols1 = rng1.Columns.Count
rows2 = rng2.Rows.Count
cols2 = rng2.Columns.Count
' 创建输出数组
Dim output As Variant
ReDim output(1 To rows1 + rows2 - 1, 1 To cols1 + cols2 - 1)
' 计算卷积
Dim i As Integer, j As Integer, k As Integer, l As Integer
For i = 1 To rows1
For j = 1 To cols1
For k = 1 To rows2
For l = 1 To cols2
output(i + k - 1, j + l - 1) = output(i + k - 1, j + l - 1) + (rng1(i, j).Value * rng2(k, l).Value)
Next l
Next k
Next j
Next i
' 将结果输出到表格中
LinearConvolution = output
End Function
```
该函数将获取两个输入区域的大小,创建一个输出数组,并计算输入区域之间的线性卷积。最后,将结果输出到表格中。您可以在 VBA 编辑器中将此代码复制并粘贴到一个新的模块中,以便在 Excel 中使用该函数。