Chart data for a selected range

In the Workbook attached, I am currently plotting recorded Min & Max temperatures on a chart. This is working, however I'd like to extend the capabilities of the charting tool to be able to define the period of data to be charted. Options being selected with the data validation value in cell G34. Can someone please show me how this is possible? Please note that there is currently data in columns D & E ( written in white font to enable clarity when reading the physical temperature data - it defines the safe temperature range for the use of a particular chemical that may be applied to bees, as indicated by the light brownish colour in the chart).

The second objective will be in another thread.

@Paul, I amended your code slightly so that it just adjusts the chart as per the value in cell G4 (was cell G34) and this seems to run

Code:

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Sub UpdateChart()
    Dim iNumDays As Long, iTemp As Long, i As Long, o As Long
    Dim dateStart As Date, dateEnd As Date
    Dim rTemps As Range
    Dim rowStart As Long, rowEnd As Long
    With ActiveSheet
        If .ChartObjects.Count <> 1 Then Exit Sub
        Application.EnableEvents = False
        Set rTemps = .Range("A1").CurrentRegion
        iNumDays = .Range("G4").Value
        With rTemps
            If iNumDays > .Rows.Count Then iNumDays = .Rows.Count - 1
            rowStart = .Cells(.Rows.Count - iNumDays + 1, 1).Row
            rowEnd = .Cells(.Rows.Count, 1).Row
            dateStart = .Cells(rowStart, 1).Value
            dateEnd = .Cells(rowEnd, 1).Value
        End With
        With .ChartObjects(1).Chart
            .Axes(xlCategory).MinimumScale = CDbl(dateStart)
            .Axes(xlCategory).MaximumScale = CLng(dateEnd)
            .ChartTitle.Caption = "Temperature " & dateStart & " - " & dateEnd & Format(iNumDays, " (## days)")
        End With
        Application.EnableEvents = True
    End With
End Sub

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I encountered the same issue as well. We are looking forward to receiving numerous suggestions and assistance from everyone.

@AussieBear

I was playing around earlier trying to see if I could use a Pivot Chart, but it got too complicated

I'll throw the 2 versions I ended up with over the fence if you want to take a look

Thank you Paul. Version 2a works nicely, whilst I get an error message for 2b saying it wont function on a Mac ( The radio buttons I'm guessing). Now to complicate the issue even further rather than just selecting the last 30,60 or 90 days could this function be adapted to view the temp data for a seasonal period?

As in Summer Autumn, Winter and Spring for each year. Is it possible to define a specific period rather than by a particular month defined range but by a specific date range. The reason for asking is that I'd like to see the lead in and out of a set defined period as in the below table as an example.

Summer 23	December, January, Feburary	15/11/23 to 15/3/24
Autumn 24	March, April, May	15/2/24 to 15/6/24
Winter 24	June, July, August	15/5/24 to 15/9/24
Spring 25	September, October, November	15/8/24 to 15/12/24

A couple of things that come to mind. The temperature table will continue to grow over time hence the need to be able to continue to define additional periods to examine by graph.

Secondly, I'm wondering if the data is simply being stored in excel should it be moved to Access/Filemaker Pro or something else and we just use Excel to show the graphing? I mean the temperature data is only growing at 365 rows X 3 Columns per year, so is it not really an issue?

About your "Secondly", you can chart an array. You can also store and retrieve arrays fairly simply from a text file. You could store all the different series in a text file and then retrieve whatever one is relevant. Just a suggestion. Jon Peltier has some nice code at this link to change your series data range.. seems like it might be relevant. HTH. Dave
Macro to move chart data series reference down one row for all charts and all series in workbook. | MrExcel Message Board

Thank you for the link Dave. Are you referring to this snippert of code?

Code:

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Sub MoveSeriesDataDownOneRow()
  Dim chtob As ChartObject
  For Each chtob In ActiveSheet.ChartObjects
    Dim iSrs As Long, nSrs As Long
    With chtob.Chart
      nSrs = .SeriesCollection.Count
      Dim sFmla As Variant
      ReDim sFmla(1 To nSrs)
      For iSrs = 1 To nSrs
        sFmla(iSrs) = .SeriesCollection(iSrs).Formula
      Next
      For iSrs = 1 To nSrs
        Dim vFmla As Variant
        vFmla = Split(sFmla(iSrs), ",")
        Dim rXVals As Range, rYVals As Range
        Set rXVals = Range(vFmla(1))
        Set rYVals = Range(vFmla(2))
        With .SeriesCollection(iSrs)
          .XValues = rXVals.Offset(1)
          .Values = rYVals.Offset(1)
        End With
      Next
    End With
  Next
End Sub

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@AB --

I think your date ranges were a little off and I used the US MM/DD/YYYY date formats so you'll need to change them

This is a little more hard coded than I would like, but if it's a problem I'll look after I get back from Spring Break :beerchug:

Spring break.... I don't recall seeing your application for leave come across my desk? Just kidding, have a good time Paul and thank you for your assistance.

@Aussiebear... Yes. Jon's code let's you both change the range for a chart series and change the series that is charted. Maybe it will be useful for you? Dave

Thank you Dave, I will continue to look at that thread and the code contained within it.

I can explain further. I'm sure the code that Paul (and/or Georgiboy) have provided is more than adequate and that this thread has already been "Solved" as indicated. But perhaps, this will provide an alternate approach. If I understand correctly, you're trying to chart different segments of your data for different seasons. Here's Jon's adjusted code with some operational commands following....

Code:

---

Sub MoveSeriesData(RowMove As Integer, ColMove As Integer)
Dim chtob As ChartObject
On Error GoTo erfix
  For Each chtob In ActiveSheet.ChartObjects
    Dim iSrs As Long, nSrs As Long
    With chtob.Chart
      nSrs = .SeriesCollection.Count
      Dim sFmla As Variant
      ReDim sFmla(1 To nSrs)
      For iSrs = 1 To nSrs
        sFmla(iSrs) = .SeriesCollection(iSrs).Formula
      Next
      For iSrs = 1 To nSrs
        Dim vFmla As Variant
        vFmla = Split(sFmla(iSrs), ",")
        Dim rXVals As Range, rYVals As Range
        Set rXVals = Range(vFmla(1))
        Set rYVals = Range(vFmla(2))
        With .SeriesCollection(iSrs)
          .XValues = rXVals.Offset(RowMove)
          .Values = rYVals.Offset(RowMove, ColMove)
        End With
      Next
    End With
  Next
erfix:
If Err.Number <> 0 Then
On Error GoTo 0
MsgBox "No data Error!"
End If
End Sub


'move X & Y series down one row
Call MoveSeriesData(1, 0)
'move X & Y series up one row
Call MoveSeriesData(-1, 0)


'move Y series column to right one column
Call MoveSeriesData(0, 1)
'move Y series column to left one column
Call MoveSeriesData(0, -1)

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To test, set up a 2 series scatter chart with X values in A1:A10. Y values in B1:C10. Select A1 to B6 and create the chart. Trial the operational controls to change your range for a series or change the series location(column). For a simple example, if you had just a 1 series chart with all values in A & B rows 1 to 100, where spring values were rows 1 to 25; summer 26 to 50; fall 51 to 75; winter 76 to 100. Create a chart with A1 to B25 spring values. To show the next range (summer)...
'move X & Y series down 25 rows

Code:

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Call MoveSeriesData(25, 0)

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To return to spring...
'move X & Y series up 25 rows

Code:

---

Call MoveSeriesData(-25, 0)

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You can set up some spin button code to change seasons.
Alternatively, set up your X values in A, Spring values in B, Summer values in C, Fall values in D and Winter values in E. Select A & B spring values and create a chart. To select summer values...
'move Y series column to right one column

Code:

---

Call MoveSeriesData(0, 1)

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To return to spring values...

Code:

---

Call MoveSeriesData(0, -1)

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Again, it seems like some spin button code could change your seasons. HTH. Dave

Thank you Dave