Custom functions
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Simple functions
You can write simple functions to make your spreadsheets more readable and easier to maintain. The process of developing and using these functions is very similar to other spreadsheet applications. For an introduction see Extensions development basic. Some examples in OpenOffice.org Basic follow.
Cell as an argument
[oobas]
Function Cube( c1 )
Cube = c1 * c1 * c1
End Function You can put =Cube(A1) in any cell.
More cells as the arguments
[oobas]
Function SimpleSum( c1, c2 )
SimpleSum = c1 + c2
End Function You can put =SimpleSum(A1;A2) in any cell.
Cells range as an argument
[oobas]
Function MySum( oRange As Variant )
If Not IsArray( oRange ) Then
If IsNumeric( oRange ) Then
MySum = oRange
else
MySum = 0
End If
Exit Function
End If
Dim nSum As double
nSum = 0
For i = 1 To ubound( oRange, 1 )
For j = 1 To ubound( oRange, 2 )
If IsNumeric( oRange( i, j ) ) Then
nSum = nSum + oRange( i, j )
End If
Next j
Next i
MySum = nSum End Function You can put =MySum(A1:A3) in any cell.
It is not possible to write to custom function that uses a cell range that spans sheets. E.g. =Sheet1.A2:Sheet2.A2 instead you would have to have separate parameters for each sheet.
