## Filter not shared values out of two cell ranges [UDF]

This post describes a custom function (User defined Function) that extract values existing only in one out of two cell ranges, see picture above. For example, value II is not extracted because it exists in both cell ranges Range1 and Range2.

This UDF is useful if you have lots of data and a formula is too slow.

Array formula in cell range B9:B22:

To enter an array formula, type the formula in a cell then press and hold CTRL + SHIFT simultaneously, now press Enter once. Release all keys.

The formula bar now shows the formula with a beginning and ending curly bracket telling you that you entered the formula successfully. Don't enter the curly brackets yourself.

### Excel user defined function

Function Filter_Values(rng1 As Variant, rng2 As Variant) As Variant ' This udf filter values that exists only in one out of two ranges Dim Value As Variant Dim temp() As Variant Dim Test1 As New Collection Dim Test2 As New Collection ReDim temp(0) rng1 = rng1.Value rng2 = rng2.Value On Error Resume Next For Each Value In rng1 If Len(Value) > 0 Then Test1.Add Value, CStr(Value) Next Value For Each Value In rng2 If Len(Value) > 0 Then Test2.Add Value, CStr(Value) Next Value Err = False For Each Value In Test2 If Len(Value) > 0 Then Test1.Add Value, CStr(Value) If Err Then Test1.Remove Value End If Err = False Next Value For Each Value In Test1 temp(UBound(temp)) = Value ReDim Preserve temp(UBound(temp) + 1) Next Value On Error GoTo 0 Filter_Values = Application.Transpose(temp) End Function

### How to add the User defined Function to your workbook

1. Press Alt-F11 to open visual basic editor

2. Click Module on the Insert menu

3. Copy and paste the above user defined function

4. Exit visual basic editor

5. Select sheet1

6. Select cell range A1:A5000

7. Type =Filter_Values(Sheet2!A1:J500, Sheet3!A1:J500) into formula bar and press CTRL+SHIFT+ENTER

The excel file contains 5000 random values in each range.

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