Excel 2007 VBA Zooming (without using select?) - vba

Okay, so I've never had to do anything in VBA where I was REQUIRED to activate a sheet or select a cell. But, now, I'm trying to figure out how to do Zoom to 100% on a bunch of worksheets, and all the code I see (google results, including answers from this website) seems to select a sheet first:
ActiveWindow.Zoom = 100
But, I did find some code on OzGrid that seems to imply it's possible to do it without selecting a sheet first:
Sht.PageSetup.Zoom = 100
(although above we have Set Sht = ActiveSheet) I tried doing
Set Sht = ThisWorkbook.Worksheets("Sheet1")
Sht.PageSetup.Zoom = 150
but nothing happens... literally nothing.
So, is this possible? Or must I activate a worksheet before I can do the zooming? I've read so many times that this is bad programming practice, unless you absolutely have to.

Yes, I believe zooming is something that only has an effect on an active sheet.
However, if you didn't want to 'see' each sheet getting activated and zoomed as it happens, you could add the line
Application.ScreenUpdating = False
before your zoom code and then after it is done:
Application.ScreenUpdating = True

Setting Application.Screenupdating = False will not solve your problem. If you select a sheet or activate a sheet Application.screenupdating will be set to true.

Related

Application.ScreenUpdating = False not working switching between Excel sheets or workbooks

The function Application.ScreenUpdating = False is not working whenever switching between worksheets or workbooks in Excel. This function alone worked fine in Excel 2010, but doesn't work in later versions from what I can tell. I am now using the office 365 desktop version of excel. In these later versions, the command only prevents updating when selecting cells or doing things within a specific worksheet, but for my purposes I need a form to pull data from a second worksheet which causes flickering.
Is there a way to prevent the screen from updating/flickering with SheetB briefly when it gets activated in this macro?
Sub ActivateSheetB()
Application.EnableEvents = False
Application.ScreenUpdating = False
Application.Calculation = xlCalculationManual
Sheets("SheetB").Activate
End Sub
I've had the same thing happen to me forever and it's fairly annoying but from my own observation, I believe that application.screenupdating = false is still working. What I mean by that is your code is still being sped up. Other than it visually being annoying and making users think they broke excel this is still an effective method for speeding up your workbook even when switching between sheets.
Hopefully someone comes along with a better answer than mine because I'd love to know what that answer is as well xD

Excel file decided one day to format all of the cells that were General to Custom [$-409]ddd

I've been using this particular file for a number of years (expense tracking/checkbook). It has a few simple macros, but none of them have acted up after several years of fine-tuning to do anything like the effect I've encountered. I'm running Excel 2013, if that makes any difference to the scenario.
Several months ago I noticed that when entering data into an unused area on one of the worksheets, the result shown would be "Mon", "Tue", etc. Looking at the formatting drop-down list in the toolbar showed Custom, instead of General, as I would have expected (the specific formatting is [$-409]ddd). For a long time I just adjusted the formatting on the new work to whatever I needed it to be (General, Accounting, Percentage, etc) and carried on. It's become frustrating recently and I decided to investigate further.
It appears that ALL of the cells that were normally formatted as General, are really formatted as Custom. Most of the cells I didn't notice it on are simply text like Balance, Contribution, etc. so I didn't realize the formatting had changed. Only the cells that I specifically formatted as Accounting, Number, Percentage, etc. remain unaffected by the blanket "Custom-ization".
I don't have any code in my macros that do blanket changes to [$-409]ddd, only one section of code that applies "mmm dd" on one specific page, and it's hard coded to "mmm dd".
Does anyone have any clues on what may have happened? I'm open to suggestions on how to remedy the situation as well. I'm considering just a brute-force macro that walks through all of the cells in all of the worksheets, checks the formatting against [$-409]ddd and changes them to General.
This can happen if the Normal Style has been corrupted. Examine it (using right-click) and fix if necessary:
Gary's Student is most likely right as to the cause of this. Anyway, if you don't know how to fix it that way or the cause turns out to be something else, here is a brute-force way to remedy the situation in all worksheets in the workbook.
Some words of caution:
1) This will take a very long time to run, since it loops through all cells in the workbook.
2) Make sure you insert the name of the wrong number format exactly right, or it won't work.
3) Make a copy of the workbook in question before you try this to make sure you don't break anything unintentionally.
Sub resetNumberFormats()
Dim sht As Excel.Worksheet
Dim cll As Range
Dim wrongNumberformat As String
Application.ScreenUpdating = False
wrongNumberformat = "[$-409]ddd"
For Each sht In Worksheets
For Each cll In sht
If wrongNumberformat = cll.NumberFormat Then cll.NumberFormat = "General"
Next cll
Next sht
Application.ScreenUpdating = True
End Sub
Edit
The following code is much much faster and works in an instant by me. Try this instead:
Sub setNumberFormats()
Dim sht As Excel.Worksheet
Dim cll As Range
Dim wrongNumberformat As String
' insert VBA code for wrong number format below
wrongNumberformat = "[$-409]ddd"
With Application
.FindFormat.NumberFormat = wrongNumberformat
.ScreenUpdating = False
End With
On Error Resume Next
For Each sht In Worksheets
Do While Err.Number = 0
sht.Cells.Find(What:="*", SearchFormat:=True).NumberFormat = "General"
Loop
Err.Clear
Next sht
Application.ScreenUpdating = True
End Sub

Excel 2013 crashes when unhiding columns

I've spent hours trying to figure this out with no solution being found so far. I have a macro (see below) that unhides/hides a range on a spreadsheet. Seems simple enough and the first two times I run this macro it works fine; however, the third time, which is always unhiding the range, usually causes Excel 2013 to crash. I read here that having an volatile user defined function in the range I'm unhiding might be causing the problem, but I already tried making the function not volatile and Excel still crashed. Does anyone have any ideas or experienced this before?
Sub HideShowSQLCreator(control As IRibbonControl)
Dim SQL_Creator As Range
Dim Report_Home_Cell As Range
Set SQL_Creator = Sheets("Report").Range("SQL_Creator")
Set Report_Home_Cell = Sheets("Report").Range("Report_Home_Cell")
If SQL_Creator.EntireColumn.Hidden = False Then
SQL_Creator.EntireColumn.Hidden = True
Report_Home_Cell.EntireRow.Select
ActiveWindow.FreezePanes = True
ActiveSheet.Range("Report_Home_Cell").Select
Exit Sub
End If
If SQL_Creator.EntireColumn.Hidden = True Then
SQL_Creator.EntireColumn.Hidden = False
ActiveWindow.FreezePanes = False
SQL_Creator.Select
Exit Sub
End If
End Sub
So, I got frustrated and figured the workbook was just corrupted so I created a new one from scratch. The macro was working fine until I got to the end and realized that the crash had to do with a big pivot table to the right of the range I was trying to hide/unhide. I'm not sure why it happened, but my solution was to just put the columns I was trying to hide/unhide in a separate sheet in the workbook. The macro works fine with them in separate sheets. Weird stuff, but I'm glad there was a solution in the end.

Chart won't update in Excel (2007)

I have an Excel document (2007) with a chart (Clustered Column) that gets its Data Series from cells containing calculated values
The calculated values never change directly, but only as a result of other cells in the sheet changing
When I change other cells in the sheet, the Data Series cells are recalculated, and show new values - but the Chart based on this Data Series refuses to update automatically
I can get the Chart to update by saving/closing, or toggling one of the settings (such as reversing x/y axis and then putting it back), or by re-selecting the Data Series
Every solution I have found online doesn't work
Yes I have Calculation set to
automatic
Ctrl+Alt+F9 updates everything fine, EXCEPT the chart
I have recreated the chart several times, and on different computers
I have tried VBA scripts like:
Application.Calculate
Application.CalculateFull
Application.CalculateFullRebuild
ActiveWorkbook.RefreshAll
DoEvents
None of these update or refresh the chart
I do notice that if I type over my Data Series, actual numbers instead of calculations, it will update the chart - it's as if Excel doesn't want to recognize changes in the calculations
Has anyone experienced this before or know what I might do to fix the problem?
Thank you
This is the only thing I've found to consistently update a chart. It cuts the root cause of the problem (I assume): the series data is getting cached in the chart. By forcing the chart to re-evaluate the series, we are clearing the cache.
' Force the charts to update
Set sht = ActiveSheet
For Each co In sht.ChartObjects
co.Activate
For Each sc In ActiveChart.SeriesCollection
sc.Select
temp = sc.Formula
sc.Formula = "=SERIES(,,1,1)"
sc.Formula = temp
Next sc
Next co
I have run into this same issue - not sure why, and when it happens the only way I have ever gotten the chart to force update is to change something in the chart definition itself, which can easily be done via VBA as in:
Dim C As ChartObject: Set C = Me.ChartObjects("chart name")
C.Chart.ChartTitle.Text = C.Chart.ChartTitle.Text + "1"
There may be a better answer that gets to the bottom of the problem - but I thought this might help. Working on the sheet I would do a quick Ctrl-X, Ctrl-V on a piece of the chart (or the whole thing) to force the chart to update.
I had this problem while generating 1000+ graphs through VBA. I generated the graphs and assigned a range to their series. However, when the sheet recalculated the graphs wouldn't update as the data ranges changed values.
Solution --> I turned WrapText off before the For...Next Loop that generates the graphs and then turned it on again after the loop.
Workbooks(x).Worksheets(x).Cells.WrapText=False
and after...
Workbooks(x).Worksheets(x).Cells.WrapText=True
This a great solution because it updates 1000+ graphs at once without looping through them all and changing something individually.
Also, I'm not really sure why this works; I suppose when WrapText changes one property of the data range it makes the graph update, although I have no documentation on this.
I had the same problem with a simple pie chart.
None of the macros worked that I tried. Nothing worked on cut, pasting, relocating chart.
The Workaround I found was to edit the chart text, remove the labels, then re-select the labels. Once they re-appeared, they were updated.
This is an absurd bug that is severely hampering my work with Excel.
Based on the work arounds posted I came to the following actions as the simplist way to move forward...
Click on the graph you want update - Select CTRL-X, CTRL-V to cut and paste the graph in place... it will be forced to update.
This works very well for me -- it flips axes on all charts and then flips them back, which causes them to refresh without changing at all.
'Refresh all charts
For Each mysheet In ActiveWorkbook.Sheets
mysheet.Activate
For Each mychart In ActiveSheet.ChartObjects
mychart.Activate
ActiveChart.PlotArea.Select
ActiveChart.PlotBy = xlRows
ActiveChart.PlotBy = xlColumns
ActiveChart.PlotBy = xlRows
Next
Next
This is a known Excel bug...
The best and fastest workaround is the Columns.AutoFit - Trick:
Sub Update_Charts()
Application.ScreenUpdating = False
Temp = ActiveCell.ColumnWidth
ActiveCell.Columns.AutoFit
ActiveCell.ColumnWidth = Temp
Application.ScreenUpdating = True
End Sub
I have another problem of refeshing charts. When generating the charts automatically, some charts appear over and cache the text in the sheet. It happens to be a problem of refreshing the generated charts. When I zoom in or zoom out, I can get the expected results. So I post the solution here if it interest someone.
Programmatically, I added this after generating charts :
ActiveWindow.Zoom = ActiveWindow.Zoom + 1
ActiveWindow.Zoom = ActiveWindow.Zoom - 1
Ok I have a solution, really....
I found that the problem with my charts not updating first occurred shortly after I had hidden some data columns feeding the chart, and checked "show data hidden in rows and columns" in the Chart's "Select Data Source" msg box).
I found that if I went back into the "Select Data Source" msg box and unchecked/rechecked the "show data hidden in rows and columns" that the chart refreshes.
Programatically I inserted the following into a Macro that I linked a button to, it refreshes all of my charts quick enough for a workaround to a known bug. This code assumes one chart per worksheet but another for statement for charts 1 to N could be added if desired:
Sub RefreshCharts()
Application.ScreenUpdating = False
For I = 1 To ActiveWorkbook.Worksheets.Count
Worksheets(I).Activate
ActiveSheet.ChartObjects("Chart 1").Activate
ActiveChart.PlotVisibleOnly = True
ActiveChart.PlotVisibleOnly = False
Next I
Application.ScreenUpdating = True
End Sub
I faced the same issue. The issue is due to restriction in no. of calculated formulas in your sheet. you can solved it using two ways:
Manual force re-calculate:
Press SHEFT + F9
Macro to force re-calculate:
add below code to the end of the function which changes the data
Activesheet.Calculate
I found the solution of it:
From excel options make sure to change the calculation options as below. It changed sometimes to manual after heavy work in excel.
We found a solution that doesn't involve VBA: multiplying some element of the chart's data range by TODAY()-TODAY()+1.
Even though the range was recalculating without this, the volatile nature of TODAY() somehow gives it an extra boost that triggers the chart recalc.
This problem is ridiculous! No one's solution worked for me in 2010, but I based mine off of tpascale's:
Dim C As ChartObject
Set C = ActiveSheet.ChartObjects("CTR_Chart")
C.Chart.SetSourceData Source:=Range( _
"KeywordBreakdown!$A$8:$A$12,KeywordBreakdown!$E$8:$E$12")
Simply redefined the Source Data range. If it's a named range, that could conceivably be reasonably clean. I guess the best solution to this is keep trying to modify different chart properties until it refreshes.
I had this problem and found that it was caused by having two excel applications running at the same time. If I closed everything and opened just the file I was having problems with the charts where dynamic like they should be. Maybe this helps
This worked for me, it cuts and re-pastes the charts on the active worksheet. I based this off of Jason's code and a blog post I found in a quick Google search.
Sub RepasteCharts()
Dim StrTemp As String
Dim IntTempTop As Integer
Dim IntTempLeft As Integer
Set sht = ActiveSheet
For Each co In sht.ChartObjects
'Activate the chart
co.Activate
'Grab current position on worksheet
IntTempTop = ActiveChart.Parent.Top
IntTempLeft = ActiveChart.Parent.Left
'Cut and paste
ActiveChart.Parent.Cut
ActiveSheet.Paste
'Reposition to original position
ActiveChart.Parent.Top = IntTempTop
ActiveChart.Parent.Left = IntTempLeft
Next co
End Sub
From Excel 2013 on, there is the Chart.Refreh method (https://msdn.microsoft.com/de-de/library/office/ff198180.aspx) which worked for me:
Dim cht As ChartObject
For Each cht In ThisWorkbook.ActiveSheet.ChartObjects
cht.Chart.Refresh
Next cht
Just spent half a day on this myself.
I have a macro that changes values that are the data for a chart. All worked fine in Excel 2003, but in Excel 2007 the chart seems to lose all connection to its data, although manually changing data values in two column triggered a recalc.
My solution has been to make all charts on the active sheet invisible before the change in data, then make them visible again and call chart refresh for good measure. ( It only seems to be visible charts that have this problem updating ).
This works for me and also handles similar issues with charts as well as chart objects. The refresh may not be necessary - more testing needed.
Dim chrt As Chart
Dim chrtVis As XlSheetVisibility
Dim sht As Worksheet
Dim bChartVisible() As Boolean
Dim iCount As Long
Dim co As ChartObject
On Error Resume Next
Set chrt = ActiveChart
If Not chrt Is Nothing Then
chrtVis = chrt.Visible
chrt.Visible = xlSheetHidden
End If
Set sht = ActiveSheet
If Not sht Is Nothing Then
ReDim bChartVisible(1 To sht.ChartObjects.Count) As Boolean
iCount = 1
For Each co In sht.ChartObjects
bChartVisible(iCount) = co.Visible
co.Visible = False
iCount = iCount + 1
Next co
End If
DO MACRO STUFF THAT CHANGES DATA
If Not sht Is Nothing Then
iCount = 1
For Each co In sht.ChartObjects
co.Visible = bChartVisible(iCount)
co.Chart.Refresh
iCount = iCount + 1
Next co
End If
If Not chrt Is Nothing Then
chrt.Visible = chrtVis
chrt.Refresh
If chrt.Visible Then
chrt.Select
End If
End If
On Error GoTo 0
I had the same issue as the poster. Basically I'm running a dashboard, and I have a bunch of named ranges that are populated with return values from some UDFs. On the dashboard, there are some pie charts with data series tied to cells which contain these named ranges (the problem also occurs if the data series target cells contain the UDFs directly, bypassing the named ranges).
I change a cell value which contains, for example, the date range to base the dashboard on, and the named ranges and UDFs are forced to calculate. However, the pie charts do not update--for some reason, other types of charts do. And by the way, these are chart objects, not chart sheets. Anyway, let's cut to the solution:
I didn't want to visibly change the chart title or some other aspect of it, and anyway I noticed this wasn't updating my charts consistently. Sometimes the first time I triggered the calculation the pies would update, but with subsequent calculations the pies would not. I did notice, however, that every time I made a change in the code my dashboard worked. Thus:
Solution:
With ActiveWorkbook.VBProject.VBComponents("ThisWorkbook").CodeModule
.AddFromString "'test"
.DeleteLines 1
End With
If you're using the Workbook module (I wasn't in this case), just create a new module and reference that instead.
I faced the same problem with my work last week when I added some more calculation to my sheet. After that, using radio buttons to select data to be presented on graphs did not update the graphs anymore.
The best explanation I have been able to find so far is this:
http://support.microsoft.com/kb/243495
If I understood it right, if there are more than 65536 formulas that have another cell as a reference in your file, Excel starts to optimize the calculation and in some cases graphs don't update correctly anymore.
If there is a workaround for this without using VBA macros, I would be glad to hear that (can't use those as the files need to be shared through SharePoint without VBA macros).
What worked for me was using a macro to insert/remove a column in the data table for the chart. This will cause the chart to update the data selection.
I found this to be the fastest way to fix it.
I had the same problem while working through a tutorial (very frustrating when you follow the steps and don't get the expected result).
The tutorial to create a pie chart wanted me to select range A3:A10, then also select non-adjacent range E3:E10. I did so. I got the chart.
It then asked me to change a value and watch the percentage change, then to look at the pie chart and see the update.
It didn't update.
I looked at the data source for the pie chart, and the range was bizarre. It had the A3:A10 range notated properly, but the E10 cell reference repeated several times, and it had all of the E cells listed in a random order. It looked like
=SERIES(,(Revenue!$A$3:$A$10,Revenue!$E$3,Revenue!$E$10,Revenue!$E$10,Revenue!$E$10,Revenue!$E$10,Revenue!$E$10,Revenue!$E$9,Revenue!$E$8,Revenue!$E$7,Revenue!$E$6,Revenue!$E$5,Revenue!$E$4),1
I changed the data source to read:
=SERIES(,Revenue!$A$3:$A$10,Revenue!$E$3:$E$10,1)
Problem solved. Sometimes it's a matter of cleaning up your code so the calculations processor has less to sort through.
I struggled with this problem, too. Finally solved it by recalculating the sheet that has the chart data AFTER the custom function has recalculated. So, in Sheet 1, I have a cell that contains
=ComputeScore()
In the VBA module, the function is defined as Volatile, to ensure that ComputeScore() runs after any updates to the spreadsheet.
Function ComputeScore() As Double
Application.Volatile True
. . . do some stuff to get a total . . .
ComputeScore = theTotal
End Function
Then, in the VBA of Sheet 1, this:
Private Sub Worksheet_Calculate()
'Recalculate the charts data page to force the charts to update.
'Otherwise, they don't update until the next change to a sheet, and so
'chart data is always one update behind the user's data changes.
Application.ScreenUpdating = False
Application.EnableEvents = False
Application.Calculation = xlManual
Sheets("Charts Data").Calculate
Application.Calculation = xlAutomatic
Application.EnableEvents = True
Application.ScreenUpdating = True
End Sub
So, the sheet named Charts Data, which references the custom function cell of Sheet 1, will do a recalculation AFTER the ComputeScore() function has updated the cell of Sheet 1, since Worksheet_Calculate() fires after the ComputeScore() recalc. This additional round of calculation of the chart data causes the chart to update now, rather than later or not at all. The setting of EnableEvents and xlManual keeps infinite recalc loops and other event problems from occurring.
This might look extremely basic but I just tried Manual Calculating on the spreadsheet where the charts were (by pressing F9) and it worked! Tha VBA code for it is simply:
Calculate
;)
As i tried pretty much ALL the presented solutions and since none worked in my case, I'll add my two cents here as well. Hopefully it helps someone else.
The consensus on this issue seems to be that we need to somehow force excel to redraw the graph since it is not doing it when it should.
My solution was to kill the X-Axis data and replace it with nothing, before changing it to what i wanted. Here my code:
With wsReport
.Activate
.ChartObjects(1).Activate
ActiveChart.FullSeriesCollection(1).XValues = "=" 'Kill data here
.Range("A1").Select 'Forwhatever reason a Select statement was needed
.ChartObjects(1).Activate
ActiveChart.FullSeriesCollection(1).XValues = "=tblRef[Secs]"
End With
End Sub
My two cents for this problem--I was having a similar issue with a chart on an Access 2010 report. I was dynamically building a querydef, setting that as the rowsource on my report and then trying to loop through each series and set the properties of each series. What I eventually had to do was to break out the querydef creation and the property setting into separate subs. Additionally, I put a
SendKeys ("{DOWN}")
SendKeys ("{UP}")
at the bottom of each of the two subs.
On changing the values of the source data, chart was not getting updated accordingly. Just closed all instances of excel and restarted, problem disappeared.
I had a similar problem - Charts didn't appear to update. I tried just about everything on this thread with no luck. I finally realized that the charts that I was copying and pasting were linked to the source data, and that is why they were all showing the same results.
Be sure you are copying and pasting pictures before you go through all the other motions....
I just had the same problem, and also found that the line would only display if I put in bad data (characters instead of numbers). This caused the line to appear, but changing back to valid data caused it to disappear again.
What I found is that if I double-clicked the line (appearing with bad data), it showed me that it was on the SECONDARY axis for some reason. Changing that to PRIMARY axis solved my problem.
I was having a similar problem today with a 2010 file with a large number of formulas and several database connections. The chart axis that were not updating references ranges with hidden columns, similar to others in this chain, and the labels displayed the month and year "MMM-YY" of the dynamic data. I tried all solutions listed except for the VBA options as I'd prefer to solve without code.
I was able to solve the issues by encapsulating my dates (the axis labels) in a TEXT formula as such: =TEXT(A10,"MMM-YY"). And everything immediately updates when values change. Happy days again!!!
From reading the other contributors issues above I started to think that the Charts were having problems with the DATE data type specifically, and therefore converting the values to text with the TEXT function resolved my issue. Hopefully this may help you as well. Just change the format within the double quotes (second argument of the TEXT function) to suit your needs.
Just activate the sheet where the chart is:
Sheets(1).Activate
and your problem disappears.
I had the same problem and none of the things you mentioned in question worked for me until I just activated sheet. The accepted answer didn't work for me neither.
Alternatively you can make:
ActiveCell.Activate
For me the macro didn't update the x-axis for all series, but only the first one. The solution I found was to update the x-axis for all series and then it refrehsed (also I had code to change the format of the x-axis, but I don't think that that was the problem).
ActiveSheet.ChartObjects("Diagram 7").Activate
ActiveChart.Axes(xlCategory).Select
ActiveChart.SeriesCollection(1).XValues = "={""""}"
ActiveChart.SeriesCollection(1).XValues = "=YYY!$BQ$85:$BQ$8844"
ActiveChart.SeriesCollection(2).XValues = "=YYY!$BQ$85:$BQ$8844"
ActiveChart.SeriesCollection(3).XValues = "=YYY!$BQ$85:$BQ$8844"
ActiveChart.SeriesCollection(4).XValues = "=YYY!$BQ$85:$BQ$8844"
ActiveChart.SeriesCollection(5).XValues = "=YYY!$BQ$85:$BQ$8844"
ActiveChart.SeriesCollection(6).XValues = "=YYY!$BQ$85:$BQ$8844"
ActiveChart.SeriesCollection(7).XValues = "=YYY!$BQ$85:$BQ$8844"
ActiveChart.SeriesCollection(8).XValues = "=YYY!$BQ$85:$BQ$8844"
Full macro;
Sub TEST()
'
' TEST Makro
'
ActiveSheet.ChartObjects("Diagram 7").Activate
ActiveChart.Axes(xlCategory).Select
Selection.TickLabels.NumberFormat = "#"
ActiveSheet.ChartObjects("Diagram 7").Activate
ActiveChart.SeriesCollection(1).XValues = "={""""}"
ActiveChart.SeriesCollection(1).XValues = "=YYY!$BQ$85:$BQ$8844"
ActiveChart.SeriesCollection(2).XValues = "=YYY!$BQ$85:$BQ$8844"
ActiveChart.SeriesCollection(3).XValues = "=YYY!$BQ$85:$BQ$8844"
ActiveChart.SeriesCollection(4).XValues = "=YYY!$BQ$85:$BQ$8844"
ActiveChart.SeriesCollection(5).XValues = "=YYY!$BQ$85:$BQ$8844"
ActiveChart.SeriesCollection(6).XValues = "=YYY!$BQ$85:$BQ$8844"
ActiveChart.SeriesCollection(7).XValues = "=YYY!$BQ$85:$BQ$8844"
ActiveChart.SeriesCollection(8).XValues = "=YYY!$BQ$85:$BQ$8844"
ActiveChart.Axes(xlCategory).Select
ActiveChart.Axes(xlCategory).TickMarkSpacing = 730
ActiveChart.Axes(xlCategory).TickLabelSpacing = 730
End Sub

What Excel VBA actions are possible on hidden worksheets or workbooks?

Hidden worksheets/workbooks have some limitations to what can be done in VBA code, like most Select and Selection statements, and anything coming from ActiveSheet, but I can't seem to find any list of what the limitations are.
Google, the built-in documentation in the help system, and MSDN's website have all failed me. Can anyone point me in the right direction?
Edit:
The workbook is opened with
Set WB_Master = Workbooks.Open(Filename:=PATH_Master, ReadOnly:=False)
and then hidden with
WB_Master.Windows(1).Visible = False
From the Visual Basic for Applications help:
When an object is hidden, it's removed from the screen and its Visible property is set to False. A hidden object's controls aren't accessible to the user, but they are available programmatically to the running application, to other processes that may be communicating with the application through Automation, and in Windows, to Timer control events.
Not much help there I'm afraid, and I couldn't find much else through Google.
As you said yourself, the Select method and Selection Property don't work on a hidden Worksheet, they should work on a hidden Workbook though. (Please correct me if I'm wrong.) In general however, it's not always all that efficient to select ranges in worksheets anyway, you are better off working with the Range property (which does work on a hidden worksheet).
EDIT:
The following code will change the color of A1:A8 to Cyan even when the Worksheet is not visible:
Dim book2 As Workbook
Set book2 = Workbooks.Open("C:\Book2.xls")
book2.Worksheets("Sheet1").Visible = False
book2.Windows(1).Visible = False
With book2.Worksheets("Sheet1").Range("A1:E8").Interior
.ColorIndex = 8
.Pattern = xlSolid
.PatternColorIndex = xlAutomatic
End With
book2.Windows(1).Visible = True
book2.Worksheets("Sheet1").Visible = True
You can get around any limitations on hidden sheets by unhiding them without the user realizing it, doing whatever you need to, and then hiding them again.
This example assumes that Sheet2 is hidden.
Sub DoStuffToAHiddenSheetWithoutTheUserKnowingIt()
'turns off screen repainting so the user can't see what you're doing
'incidentally, this dramatically speeds up processing of your code
Application.ScreenUpdating = False
'note that if you're stepping through your code, screenupdating will be true anyway
'unhide the sheet you want to work with
Sheets("sheet2").Visible = True
'do whatever you want here, including selecting cells if you want
'Scagnelli is right though, only select cells if you have to
'when you're finished, hide the sheet again
Sheets("sheet2").Visible = False
'make sure you turn screenupdating back on, or Excel will be useless
Application.ScreenUpdating = True
End Sub
Another useful trick if you want your sheets hidden is to set them to xlVeryHidden, which will prevent them from being listed to the user if they try to unhide them through the menu or ribbon.