I have been trying to create a function to retrieve column titles found in row four in an excel sheet. This is what I have so far, can anybody help me please?
Sub Test_Click()
Dim text As String
Dim titles(200) As String
Dim nTitles As Integer
For i = 1 To 199
If Trim(Sheets("Sheet1").Cells(4, i).Value) = "" Then
nTitles = i - 1
Exit For
End If
titles(i - 1) = Sheets("Sheet1").Cells(4, i).Value
Next
For i = 0 To nTitles
Sheets("Sheet1").Cells(20 + i, 1).Value = titles(i)
Next
End Sub
You need to make an array function for this. So your function will take in inputs through a range
Function ReturnArray(Input as Range) as Variant
' Do stuff with the Input range
Dim Output(m,n) as Variant
'Loop through m,n to fill in the output values as you would in a range
ReturnArray = Output
End Function
And when you put in the function in excel, type it in the cell after highlighting where you want the output and press Ctrl-Shift-Return
Just as you write a Sub you can write a Function, just substitute the words at the beginning and at the end of your code.
Now, about how to return the values, obviously it will be an array, so you'll need to declare the array, set its size, fill its cells and return it. This can be done like this:
Function yourFunction() as String()
' You already have an array named "titles" which stores the values you want
' to return. Fill it exactly as you do in your original code.
yourFunction = titles ' This is the way to return the array.
End Function
If you want to use this function in a worksheet (as a formula), remember that this is an array-function, so you'll need to press Ctrl+Shitf+Enter after you enter the function in the cell instead of just [Enter].
Related
I have a template with a set number of columns (170) and title headers (row 1 cell name's). This is always the same, until users add columns in between (they're instructed not to change headers). The idea is to make it tamperproof as far as the adding of columns is involved.
I'd like to make variables to hold some of the headers (with the capacity to hold all) and check these with the template to find out the column number (in a loop I reckon). It's probably wisest to make a function to call upon it?
Dim ColHeader1Str as string 'literal row 1, column 1 value (which is always
'the same string and position in the template)
Dim iColHeader1 as integer 'holds the (to be set) value of the column number
Set ColHeader1Str = "ColHeader1"
Now I'd like a loop where it loops trough all the columns (last column = 200) and checks to see what the column number is that matches the ColHeader1Str and store this in the iColHeader1
So something like:
Function find_columnNmbr
Dim i As Integer
For i = 1 To 200 Step 1
If 'ColHeader1Str matches actual column header name
'set found integer as iColHeader1 and so forth
Exit For
End If
Next
End Function`
I know I'm missing a few steps and I'm hoping you guys can help me out.
Update: The template has set column headers. When users interact with it a result could be that columns shift position, or they add more. I have a workbook that needs to load data out of the user's altered template.
I.E. The template has columns 1, 2, 3, 4 and the names are column1, column 2 etc. A user ads a random column so now there are 5. The loop needs to loop through the names of the column headers and identify the column number of the original template columns 1, 2 etc based on a string variable with the original names, which I've hard coded beforehand. These are public constants.
What function LookForHeaders do: input a string, then search for the string in usersheet.range(1:1). If it is found, return the column number of that cell, otherwise it returns 0.
Private Function LookForHeaders(ByVal headerName As String) As Long
Dim rng As Range
Dim userSheet As WorkSheet
Set userSheet = 'userSheet here'
On Error GoTo NotFound
LookForHeaders = userSheet.Range("1:1").Find(headerName).Column
Exit Function
NotFound:
LookForHeaders = 0
End Function
Private Sub Test()
Dim rng As Range
Dim template As WorkSheet
Set template = 'template here'
For Each rng In template.Range(Cells(1,1), Cells(1,200))
iColHeader1 = LookForHeaders(rng.Value)
'Do something with iColHeader1
Next rng
End Sub
Not sure what your looking for but here is example
Option Explicit
Public Sub Example()
Dim LastCol As Long
Dim i As Long
LastCol = ActiveSheet.UsedRange.Columns(ActiveSheet.UsedRange.Columns.Count).Column
For i = 1 To LastCol
If Cells(i) = "Name" Then
Debug.Print Cells(i).Address
End If
Next
End Sub
I have created my own function to determine count the values in between to given values in increments of 30 as seen here
Function InBetween(First As Integer, Last As Integer)
Dim i As Long, F As String, a() As String
F = First
For i = First + 30 To Last Step 30
F = F & "|" & i
Next i
InBetween = F
End Function
When I use this function, I currently have it returning the result array in the cell the formula was entered into in the format of "1|2|3|4". Is there a way I can get this array to populate into the cell below the one containing the formula?
Note: I don't want the formula in the cell as I need to refer to the cell in a future equation that will use the result and not the equation.
This was surprisingly difficult. At first I tried calling a sub from the function to affect the cell below using application.caller but this always returned a #value error. It seems a UDF can't run anything that affects the worksheet.
Eventually I came up with this:
Create a worksheet change event by pasting this into the worksheet object in vb:
Private Sub Worksheet_SelectionChange(ByVal Target As Range)
On Error Resume Next
If Left(Target.Offset(-1, 0).Formula, 10) = "=InBetween" Then Call DoX(Target.Offset(-1, 0), InBetween(10, 60))
On Error GoTo 0
End Sub
Then paste this into a module
Sub DoX(r As Range, val As String)
Sheets(r.Parent.Name).Cells(r.Row, r.Column) = ""
Sheets(r.Parent.Name).Cells(r.Row + 1, r.Column) = val
End Sub
Then use your function as normal, but remember to hit return after you enter it so the active cell is the cell below where you entered the formula.
Context:
I have several lists in my sheet (1 column wide, 1-10 rows long). When I right click a cell in these lists, I can do several options, that all work well. I have given a name to the cell at the top of each of these lists (ex. Cell A1 has been given the name cell_1, B10 is names cell_2, etc).
I would like to know if the cell I am right clicking on is the one at the top of the list; is it named "cell_(number)"? If it is not, it checks the cell on top of that one. Does it have a name that starts with "cell_"? If not, check the one on top, etc. Until I can figure out the user clicked on an element of WHICH list.
TL;DR The actual question
I can use ActiveCell.Address, which gives me something like "A1" whether or not I have assigned a name to that cell. ActiveCell.Name gives "Sheet1!A1", so it's not much better. Any idea how to get it to return the name I have assigned instead?
Create a UDF to test the application names, it's less efficient but contains error handling within the function itself:
Sub SO()
'// Example how to call function
Debug.Print GetCellName(Range("A1"))
End Sub
Function GetCellName(myCell As Excel.Range) As Variant
Dim nameCheck As Variant
For Each nameCheck In Application.Names
If Replace(Replace(Replace(nameCheck, "=", ""), "'", ""), "!", "") = _
CStr(myCell.Parent.Name & myCell.Address) Then
GetCellName = CStr(nameCheck.Name)
Exit Function
End If
Next
GetCellName = CVErr(Excel.xlErrName)
End Function
Note you can also use this function in a worksheet cell like so:
=GetCellName(A1)
Perhaps this would work. This function returns the names assigned to a cell (or bigger range for that matter). If there's more than one name, it returns it as an array for array formula...or the user can supply an index to return only the desired name position
Public Function CellIsInRangeNames(sheetname As String, checkRange As Range, Optional itemNumber As Variant) As Variant
Dim oNM As Name
Dim oSht As Worksheet
Dim isect As Range
Dim namesCollection() As Variant
Set oSht = Worksheets(sheetname)
Dim i As Integer
i = -1
For Each oNM In oSht.Names
Set isect = Application.Intersect(Range(oNM.Name), checkRange)
If Not isect Is Nothing Then
i = i + 1
ReDim Preserve namesCollection(0 To i)
namesCollection(i) = CStr(oNM.Name)
End If
Next oNM
If i = -1 Then
'didn't find any
CellIsInRangeNames = xlErrName
ElseIf Not IsMissing(itemNumber) Then
'user wanted this instance only
If (itemNumber - 1 > UBound(namesCollection)) Or (itemNumber - 1 < LBound(namesCollection)) Then
CellIsInRangeNames = xlErrValue
Else
CellIsInRangeNames = namesCollection(itemNumber - 1)
End If
Else 'here's the list as an array
CellIsInRangeNames = namesCollection
End If
End Function
I have an excel formula:
=SplitKey(GetSysCd(INDEX([ReportValue],MATCH("mtr_make_model",[FieldName],0)),INDEX([ListName],MATCH("mtr_make_model",[FieldName],0))), 0)
which is running a few subroutines in VBA, but mainly matching values and inserting those values into a cell. When it finds a value for "mtr_make_model" it runs and matches the values inside a sys codes table. The issue I am having is that it is calculating once and then it removes the formula and now has solely the value... In the event that I go to the mtr_make_model field and change the value, the formula does not recalculate. Has anyone heard of this happening? Is this due to something in the VBA code? How do I make that formula stay put and if certain values change, the formula recalculates?
Thanks in advance.
Here are the two functions:
Public Function GetSysCd(ByVal name As String, sysCdTableName As String) As String
Dim r As Integer
Dim sysCdTable As Range
Dim nameList As Variant
Dim sysCd As String
On Error GoTo GetSysCd_Error
Set sysCdTable = Worksheets("sys_cd").Range(sysCdTableName)
nameList = WorksheetFunction.Index(sysCdTable, 0, 2)
r = WorksheetFunction.Match(name, nameList, 0)
sysCd = WorksheetFunction.Index(sysCdTable, r, 1)
GetOutOfHere:
On Error GoTo 0
GetSysCd = sysCd
Exit Function
GetSysCd_Error:
sysCd = ""
GoTo GetOutOfHere
End Function
Public Function SplitKey(s As String, v As Integer)
Dim aString As Variant
Dim r As Integer
If Len(s) > 2 Then
aString = Split(s, "_")
If v = 0 Or v = 1 Then
SplitKey = aString(v)
Else
SplitKey = aString(0)
End If
Else
SplitKey = ""
End If
End Function
I don't think the functions are relevant at this point, but rather just a matter of the function not recalculating when a variable in the formula changes...
The problem could be that Excel only recalculates functions when one of their arguments changes, and your GetSysCd function is referring to a range that is not in its argument list
Set sysCdTable = Worksheets("sys_cd").Range(sysCdTableName)
where sysCdTableName is just a string rather than a reference.
You can make the functions recalculate in real time by adding Application.Volatile True to the top of each function.
i'm writing a user defined function for excel in VBA.
User may pass a whole column/row into the function instead of one cell. How do you get cell that is in the same row (for column case) and in the same column (for row case), where the function is.
For example, when you are writing in Excel in cell, say, C3 the formula "=A:A*B:B" it calculates A3*B3 in fact. I want to have the same behaiviour in my UDF.
Let's assume function that returns passed argument for simplicity reasons.
This code does not work (returns #VALUE! for columns/rows/ranges):
Public Function MyTestFunction(ByVal arg1) As Variant
MyTestFunction = arg1
End Function
My option is as follows, but I am concerned about performance and the fact that user may want to pass a value to the formula instead of Range.
Public Function MyTestFunction2(ByVal arg1 As Range) As Variant
If arg1.Count = 1 Then
MyTestFunction2 = arg1.Value
Else
' Vertical range
If arg1.Columns.Count = 1 Then
MyTestFunction2 = arg1.Columns(1).Cells(Application.Caller.Row, 1).Value
Exit Function
End If
' Horizontal range
If arg1.Rows.Count = 1 Then
MyTestFunction2 = arg1.Rows(1).Cells(1, Application.Caller.Column).Value
Exit Function
End If
' Return #REF! error to user
MyTestFunction2 = CVErr(xlErrRef)
End If
End Function
How do you solve this problem?
Thanks to valuable comments code has been slightly updated and now can be used in other formulas to filter input values.
Public Function MyTestFunction2(ByVal arg1) As Variant
If Not TypeName(arg1) = "Range" Then
MyTestFunction2 = arg1
Exit Function
End If
If arg1.Count = 1 Then
MyTestFunction2 = arg1.Value
Else
' Vertical range
If arg1.Columns.Count = 1 Then
' check for range match current cell
If arg1.Cells(1, 1).Row > Application.Caller.Row Or _
arg1.Cells(1, 1).Row + arg1.Rows.Count - 1 < Application.Caller.Row Then
' Return #REF! error to user
MyTestFunction2 = CVErr(xlErrRef)
Exit Function
End If
' return value from cell matching cell with function
MyTestFunction2 = arg1.Worksheet.Columns(1).Cells(Application.Caller.Row, arg1.Column).Value
Exit Function
End If
' Horizontal range
If arg1.Rows.Count = 1 Then
' check for range match current cell
If arg1.Cells(1, 1).Column > Application.Caller.Column Or _
arg1.Cells(1, 1).Column + arg1.Columns.Count - 1 < Application.Caller.Column Then
' Return #REF! error to user
MyTestFunction2 = CVErr(xlErrRef)
Exit Function
End If
' return value from cell matching cell with function
MyTestFunction2 = arg1.Worksheet.Rows(1).Cells(arg1.Row, Application.Caller.Column).Value
Exit Function
End If
' Return #REF! error to user
MyTestFunction2 = CVErr(xlErrRef)
End If
End Function
In the first code snippet change MyTestFunction = arg1 to Set MyTestFunction = arg1. Also add a small mechanism that recognizes the TypeName() of the arg1 and make sure that the function is receiving a Range type object.
Public Function MyTestFunction(ByVal arg1) As Variant
Set MyTestFunction = arg1
End Function
example
Then, if you get to your spreadsheet and type in =MyTestFunction(A:A) on any row and you'll receive the equivalent value from the column you're passing to the function that sits on the same row.
And your second idea about getting a similar behaviour as =A:A*B:B you can achieve with
Public Function MyTestFunction2(ParamArray arr() As Variant)
MyTestFunction2 = arr(0)
End Function
example
I think you need to use Application.ThisCell property to do it. According to MSDN:
Application.ThisCell- Returns the cell in which the user-defined
function is being called from as a Range object.
Let me present how to use it on simple example.
Imagine we have data as presented below in column A:B and we want to achieve results which comes from =A*B for each row separately.
In such situation you need the function below and put it next in C column in this way: =MyTestFunction(A:A,B:B)
Function MyTestFunction(rngA As Range, rngB As Range)
Dim funRow As Long
funRow = Application.ThisCell.Row
MyTestFunction = rngA(funRow) * rngB(funRow)
End Function
Please keep in mind that Application.ThisCell will not work if you call your function from other VBA procedure.