Celebrating my MVP award: Discount offer

Hi everyone!

Every quarter Microsoft announces who are the lucky ones to receive their Most Valuable Professional Award. An MVP award lasts a year, so for a quarter of the MVPs, October 1st is an important day.

I got re-awarded!

And to celebrate that I am offering a 3 day 50 percent discount on my Formula auditing tool: RefTreeAnalyser

From October 8, 2014 to October 10, 2104 you receive 50 % off of the list price when you enter this coupon code: MVP2014

Head over to my website and download the tool, you can try it for free!

Jan Karel Pieterse

MLB Runs By Inning

There is an office pool for the MLB post season that goes like this: Each participant is assigned a half inning per game in the ALCS, NLCS, and World Series. A participant may get the top of the 1st in one game and the bottom of the 6th in another game. There are 20 participants for each half of 10 innings and innings after 10 roll around to the beginning. Every run scored in an inning assigned to you earns you a point.

The challenge is to distribute the innings among the participants. If you always get the bottom of the 10th (an inning that’s rarely played for you non-sportsballers), you wouldn’t fair very well. But what other innings are traditionally good or bad? Is the first inning littered with runs while the fourth is sparse? I couldn’t find any historical data online, but I do have the results of a pool from last season.

Based on this data, I don’t think one post season (21 games) is enough. Why would innings 3, 6, and 7 be higher? Why would the bottom of the innings total 68 runs, 24 more than the top of the innings cumulative 44 runs?

I thought I could assign some sort of value to each half inning, then make sure that each participant got roughly the same value. But I didn’t expect such disparity in innings nor in top/bottoms, so I’m not sure that works. I think I’ll end up making sure everyone gets the 10th inning once, then an even distribution between 1-3, 4-6, and 7-9. And if someone gets the bottom of the 9th more than once, bad luck for him.

Pimpin’ My Site

When Doug posted about Data Comparison Tricks, I saw Dick tell him to “pimp his site” in the comments.

Having a vivid imagination, this is what went through my head.

Yo Dawg!

Anyway, that’s what I’ll now proceed to do. (Having obtained Dick’s permission first of course!)

Here’s some stuff I’ve been working on recently.

A multi-field Find and Select/Replace tool.

AET Find and Replace

Although a bit old, (like me), some of the code came from this.

AET Cell Watch Form

Here’s the old post about it from back in 2009. (From my former blog, which I’ll also pimp!)

An alternative Status Bar that recognizes numbers even if the format is text. Woohoo!

AET Status Bar

And some games. (For the kids, but you can play too)
That’s enough pimpin’ for now. (I’m making new stuff as I write this) See you next time?

Data Comparison Tricks

Hey Dick, thanks for having me over. Wow, it’s even nicer in here than I imagined. Look at all those posts! Hey, is that an Office XP beer stein… where’d you get that? Gosh, do you really wear all these baseball caps?

Okay, well great to be here. I hope I don’t blow it. I’m going to talk about a fairly pedestrian topic, but one I deal with daily as a data analyst and report writer: comparing versions of output data.

At my work we have a report modification and publication process to verify that they’re outputting reasonable results. A lot of times this means comparing a report to its previous published version and confirming that the outputs are identical before moving on with the process.

I’ll show some tricks I use to do these comparisons. Please note these examples all assume the data you’re comparing is easily re-creatable, e.g., it comes from a data connection or was exported from another tool. In other words, don’t do these tests on the only copy of your output!

The Most Basic of Tricks – Comparing Sums

One quick trick you’ve probably used is to grab an entire column of output and check its SUM in the status bar. Aside from comparing row counts, this is about as simple as it gets.

Status bar sum

I usually just look at the first three or so digits and the last three or so, mumble them to myself, switch to the other column and mumble those to myself. If my mumblings match, I call it good.

Mind you, I only do this as an informal check. Still, writing this got me to wondering how reliable it is, and about the likelihood of a false positive, a coincidental match. So I did a little test and filled two columns with RandBetween formulas then wrote a bit of VBA to recalculate them repeatedly and record the number of times their sums matched. With two columns of 1000 numbers, each filled with whole numbers between 1 and 1000, I averaged around three matches per 100,000 runs, or a .003% chance of a coincidental match. That’s a pretty small range of numbers though, equivalent to a span from one cent to ten dollars. So I upped it to whole numbers between one and a million, similar to one cent to 10,000 dollars. With a million calculations of 1000 rows there were no coincidental matching totals.

A More Thorough Trick – Compare All Cells

When I really want to make sure two sets of data with the same number of rows and columns match cell for cell, I do the obvious and … compare every cell. That could look something like this (but eventually won’t, so stick with me):

AND compare 1

The two sets of data (a modified version of the indispensable table from celeb-height-weight.psyphil.com) are on the left, with the comparison formulas for each cell on the right. In this case they all match and return TRUE:

If you’ve got more than a few columns and rows, you probably don’t want to scan all the comparison cells for FALSEs. Instead, you can wrap up all these comparisons in a single AND, like this. It will return FALSE if any of the referenced cells are FALSE:

AND compare 2

Or just eliminate the middleperson altogether with a single AND in an array formula:

AND compare 3

What If They Don’t All Match?

If they don’t all match you can add conditional formatting to highlight the FALSEs…

Conditional Formatting for FALSEs

… or just add it directly to the two tables. However, rather than conditional formatting I’d use a per-row AND array formula and filter to FALSE:

per-row ANDs

Same Data, Different Order

Sometimes my rows of data are the same, but they’re out of order. I try not to yell at them like Al Pacino. Instead I might test them with a COUNTIF(S) formula, like so, which just counts how many times the name in a the second table appears in the first table:


To compare whole rows, you’re stuck (I think) with longer COUNTIFS formulas than I care to deal with. I’d rather concatenate the rows and compare the results with a COUNTIF. I don’t have many worksheet UDFs in my tools addin, but one exception is Rick Rothstein’s CONCAT function, which I found on Debra’s blog. It’s great because, unlike Excel’s Concatenate function, it allows you to specify a whole range, rather than listing each cell individually.

COUNTIFs can get slow though once you’ve got a few thousand rows of them. So, another approach is just to sort the outputs identically and then use an AND to compare them. Here’s a function I wrote to sort all the columns in a table:

Sub BlindlySortTable()
Dim lo As Excel.ListObject
Dim loCol As Excel.ListColumn

Set lo = ActiveCell.ListObject
With lo
    For Each loCol In .ListColumns
        .Sort.SortFields.Add _
                Key:=loCol.DataBodyRange, SortOn:=xlSortOnValues, Order:=xlAscending, DataOption:=xlSortNormal
    Next loCol
    With .Sort
        .Header = xlYes
        .MatchCase = False
    End With
End With
End Sub

At this point I should mention that I almost always work with Tables (VBA ListObjects) when doing these comparisons. A lot of the time I’ve stuffed the SQL right into the Table’s data connection. If the data is imported from something like Crystal Reports, I’ll convert it to a table before working with it.

Using Pivot Tables For Comparing Data – Fun!

As I get farther along in a report’s development, odds are I might just want to compare a subset of the old version to the whole new version, or vice-versa. Using pivot tables is great for this. Say for instance my new report is only for people whose weight is under 48 kilograms. I’d like to compare the output of the new report to a filtered list from the older version and confirm that I’m returning the same weights for the people in the new subset. A pivot table makes this easy:

Pivot compare

The pivot on the left, based on the original data, has been filtered by weight and compared to the pivot on the right, based on the new, less-than-48 data. An AND formula confirms whether the data in the new one matches the original.

I was doing this the other day with multiple subsets, causing the pivots to resize. I thought “wouldn’t it be cool to have a function that returns a range equal to a pivot table’s data area?” The answer was “yes,” so I wrote one. It returns either the used range or the data area of a table or pivot table associated with the cell passed to it. Here’s the code:

Public Enum GetRangeType
    UsedRange    '0
    'CurrentRegion - can't get to work in UDF in worksheet, just returns passed cell
    PivotTable    '1
    ListObject    '2
End Enum

Public Function GetRange(StartingPoint As Excel.Range, RangeType As GetRangeType) As Excel.Range
Dim GotRange As Excel.Range

With StartingPoint
    Select Case RangeType
    Case GetRangeType.UsedRange
        Set GotRange = .Worksheet.UsedRange
    Case GetRangeType.PivotTable
        Set GotRange = .PivotTable.TableRange1
    Case GetRangeType.ListObject
        Set GotRange = .ListObject.Range
    End Select
End With
Set GetRange = GotRange
End Function

The array-entered formula in H1 in the picture above becomes…

=GetRange(A3,1)= GetRange(E3,1)

… where 1 is a pivot table. You’ll note that the code itself uses the enum variable, which would be great if you could use the enums in a UDF. Also, you’ll see that I tried to have a cell’s CurrentRegion as an option but that doesn’t work. When returned to a UDF called from a worksheet, CurrentRegion just returns the cell the formula is in.

So Long

Okay then, see you later Dick. Thanks again for the invite. It means a lot to me.

No, no, don’t get up… I can show myself out and it looks like you’re working on something there. Wait a minute… no it couldn’t be… for a second there it looked like you were using a mouse… Must have been a trick of the light.


Formula Auditing – woes and arrows

I’ve been playing around with the Formula Auditing tools a fair bit recently. These things:
Formula Auditing Tools

In the course of this, I noticed a few things I haven’t before. Firstly, here’s my setup:
Formula Auditing Example_No Arrows
When I have cell D6 selected and click Trace Precedents, Excel is kind enough to draw just one arrow from the precedent range, while putting a box around the entire Precedent range so I can see where it is:
Formula Auditing Example_TracePrecedents
If I were to click on Trace Dependents for that cell, I’d like to see pretty much the same thing:
Formula Auditing Example_DesiredTraceDependents
…but here’s what I actually see:
Formula Auditing Example_TraceDependents
…which looks like something that Hippies were hanging on the walls in the late sixties:
String Picture
…when they weren’t out protesting, that is:
String Protest
Doing a Trace Precedents when there’s a much longer array of dependent cells involved looks even worse:
Formula Auditing Example_TraceDependents_Many
…and Excel becomes very sluggish as you scroll around, so presumably Excel is constantly redrawing these. Scrolling down doesn’t tell you much…that’s for sure:
Formula Auditing Example_TraceDependents_Many2
Let’s take a look at another setup, to better illustrate a couple of things I didn’t know until now:
Formula Auditing Example2_blank
Here’s what Trace Dependents has to say about cell B2:
Formula Auditing Example2_TraceDependents_Level1
One thing I didn’t realise until today, is that if you keep clicking that Trace Dependent button, Excel keeps drawing in additional levels of downstream dependents:
Formula Auditing Example2_TraceDependents_Level2
Formula Auditing Example2_TraceDependents_Level3
Formula Auditing Example2_TraceDependents_OffSheet
In case you didn’t know, you can double-click on any of the blue arrows, and you’ll be taken to the Precedent/Dependent cell concerned…particularly handy if it points somewhere off-screen. And you can double-click the arrow once you’re there to be magically transported back again. The dotted arrow pointing to a little sheet icon in the above screenshot tells you that there’s an off-sheet dependent that points at cell C19, which you can jump to if you double click on that dotted arrow and then select the reference from the Go To box:
Formula Auditing Example2_Goto
…although as you see above, the native dialog box is so narrow that you’re unable to actually see the cell addresses, and can’t be resized. In that case, you might want to download Jan Karel’s excellent RefTreeAnalyser, that fixes this and does a good deal more besides:
Formula Auditing Example_JK_UserForm
It also has a much better way of displaying precedents, by overlaying in the current window some little pictures of any precendents that happen to be out of view or on another sheet. (Would be really handy to have the same functionality for dependents too.):
Formula Auditing Example_JK_Visualise
Colin Legg has some great code that will also help you to determine all on-sheet and off-sheet precedent cells, using the .NavigateArrow method to actually travel up those blue arrows and thus find any precedents on other sheets. I imagine Jan Karel uses pretty much the same approach. [Edit: No, he doesn't ]. You’ve got to use the .NavigateArrow method, because the Range.Precedents property doesn’t return precedents on other sheets or other workbooks.

Now here’s something nasty I’ve just noticed about the native Formula Auditing tool: It doesn’t pick up on off-sheet references that involve any kind of Table Reference, although on-sheet references work just fine:
Formula Auditing Example_Tables offsheet
So it is well broken, in my opinion, because I often refer to Tables on other sheets. And both Colin’s code and Jan Karel’s addin won’t help you here, I’m afraid. [Edit: Jan Karel's code still catches these.] Seems to me the only way to get around this would be to search the worksheet for instances of a Table’s name occurring within formulas. That’s assuming there’s no way to actually read Excel’s dependency tree from wherever Excel maintains it. I seem to recall seeing a post a few years back about how you can extract information from the tree by extracting XML from the workbook file, but that might just be a flight of fancy. Anyone know whether it ispossible to interrogate the dependency tree directly somehow?

How ’bout colours instead of Arrows?

Given all those arrows can get pretty confusing, I thought I’d have a crack at coding up something that lets you use Conditional Formatting instead and/or arrows to highlight Dependents (Green) and Precedents (Blue). Here’s my starter for ten, with both Dependents and Precedents highlighted. Direct Dependents/Precedents get a darker colour and white bolded font so you can easily tell them from indirect:
Formula Auditing Example_Jeff1
…and you can restrict it to just showing direct:
Formula Auditing Example_Jeff2
…and overlay arrows if you want:
Formula Auditing Example_Jeff3
It automatically updates if you change your selection, too:
Formula Auditing Example_Jeff4

It doesn’t solve the Table issue mentioned above, but I’ve been finding it quite handy to get a quick feel for what’s going on in those crappy spreadsheets I inherited…err…designed recently.

Here’s a sample file:

Hardware Recommendations

It seems I have server-issue reprieve, so I’ll take advantage of it by throwing up the first post in weeks. Don’t worry, it’s not Excel related. I mean, who can expect that from this site. I do have a couple posts in the hopper, I just can’t seem to login when I want to write the up.

I got an email from an old friend asking for my recommendations for a new desktop computer. I wrote a longer reply than I expected and figured I might as well post it here. That way you can give your two cents in the comments. First, I’ll summarize his question/requirements:

I want “serious scientific/number-crunching/math-oriented”, and things labeled “home”, “office”, and “gaming” don’t seem like the right fit. I would like to use this machine primarily for compiled Python, S Plus, Mathematica, and C++ dll’s I am coding for Excel and OpenOffice. Specific points:

  1. Is 8 GB RAM enough? Speed-wise, will 16 or more make a “significant” difference?
  2. Which processor: i7?
  3. Will a hybrid drive make any difference? Incidentally, I keep all of my documents on my NAS; I would, of course, keep development versions on the local HD, but really don’t need more than 150 MB (if that!) on it.
  4. Dell looks good – highly configurable — what’s your take?
  5. Monitor/Video Card: One of my Macs is 27″, and is awesome for my wife’s photo/cine avocation. I am writing you from a 17″ Mac ProBook. Works for me. So I won’t need a particularly large monitor (which one?!?); what I should do re the video card?
  6. I/O: Several USB 3.0; Wired Ethernet, of course; Bluetooth; Thunderbolt. DVD and SD drives would be great.

Here’s my reply:

I don’t profess to be an expert, but I’m happy to give you my opinion. Just take it for what it’s worth. My last three desktops were 1) custom built 2) HP HPE-150f and 3) custom built.

My Last Three Computers

  1. I read codinghorror.com about how he built his own home theater PC. I was cutting cable and needed something to run Windows Media Center for over the air TV. I somewhat followed his lead, but since mine would be out of sight, I didn’t worry about making it small or quiet. I wouldn’t recommend my particular build for your purposes because it was built with the new (at the time) Intel chipset that had HDMI out built-in.

    I was in a situation where I didn’t trust Dell anymore, didn’t know who to trust, and was interested in trying my hand at building hardware just for the experience. I made some errors along the way, but all-in-all it has been an outstanding machine. My biggest mistake was not buying a big enough power supply. I also had a hard drive go bad in the first year. Even with the missteps, the whole cost was about $1,400.

  2. I was ready to replace my Dell desktop because it was 7 years old. I had a reasonably good experience building a PC so I was going to go that route again. It was a different build, so I there was still some chances to make mistakes, but I priced it out on New Egg anyway. Then I went to HP to see what a comparable machine would cost. It was a few hundred dollars cheaper and it didn’t really make sense for me to build it myself. I got an i7 2.8Ghz with 8 GB.

    That was four years ago, or so, and this machine has been terrific. Zero problems and it does everything I want performance wise. My only problem with HP is that they have a lot of craziness going on – they announced they were getting out of the PC business, then retracted. It just gives me pause. We use HP exclusively at work (~1,000 desktops) and they are probably still my go-to manufacturer.

  3. The third desktop was for my son. It was still a better deal not to build it, but I wanted to give him the experience of building a PC from srcatch, so we went that route. It was a pretty good experience and it has been a good machine. If you’re interested in building your own, I’ll send you the component list.

Operating Systems

I run Win7 and my son runs Win8. He prefers Win8, but kids are stupid, so what are you going to do. On my HTPC, if I upgrade to Win8 I have to pay extra for Windows Media Center. In other words, I’m never upgrading. And when Win7 doesn’t work anymore, I’m going Linux/XMBC for the HTPC. Sorry Microsoft, but when you stopped building problems for guys like me you should have expected this.

Your Specific Questions

  1. I bought my HP with 4 GB (the stock amount) and bought another 4 from crucial.com. You can save some pretty good money that way, but price it both ways. Just make sure you get enough slots if you’re going to add after market RAM. If I were buying today, I wouldn’t get less than 12 GB because RAM is so cheap that even an incremental increase in performance is worth it. I’d look at 16 too. But really, I’ve been running 8 GB for a while, and I have no problems, so it might be a waste of money.
  2. I like my PCs to last 5-7 years, so I tend to over buy on CPU and RAM. I don’t what’s newer and better than i7, but I definitely would not go with i5.
  3. Another misstep on building my own was not having an SSD for a boot drive. If I were building again, I would get an SSD for a primary and a Western Digital for storage. SSDs are getting more reliable at a pretty quick pace.
  4. Six years ago, or so, I stopped buying Dell. I bought them exclusively for home and work for the 10 years prior, but the quality of the components was going down and I’d had enough. I’ve heard they’ve made a bit of a comeback, quality wise, but I’m not sold yet. Concurrent with them buying cheaper parts, they moved their customer service to India. Back in the day when I didn’t have to talk to Dell customer service because their shit just worked, I wouldn’t care where it was. But with failing parts, it was a problem. I’m not trying to denigrate an entire sub-continent. It was just that the company Dell hired really sucked. I’m sure the rest of India is very knowledgeable.
  5. I have two 22″ monitors side-by-side and love it. I can’t imagine coding in Excel without the VBE on one screen and Excel on the other. Even when I code in Ruby, Python, Java or whatever, I need to have stackoverflow on one screen and the IDE on the other. I will never have one monitor again – it is the single best productivity boost in my computing career (including my keyboard shortcut mania). Both my monitors are Acer that I got from Newegg. They’re slightly different heights, but I find that piano sheet music books level them up nicely. If you can get identical, that’s even better. My work monitors are identical 22″ ASUS and I’m very happy with those too.
  6. Don’t sacrifice on USB ports. They don’t all have to be 3.0, but make sure you have double what you think you need. Even if you don’t go with two monitors, you should consider a dual output video card in case you change your mind.

I’m a couple years away from replacing my desktop, but if I were forced to do it, I would price out HP, Lenovo, and Asus. And probably Dell for good measure, but I would have to be really convinced to go back to Dell. Lenovo and Asus have awesome reputations in laptops and I don’t know why that wouldn’t translate to desktops. I bought a used Asus convertible tablet several years ago and it still runs like a champ.

End of reply

If you have any opinions on desktop hardware, please leave them in the comments.

Servers Suck

Hey, did you notice that this page loaded in a few milliseconds instead of timing out? Me too!

I don’t know what caused that period of slow down because I don’t know much about servers. I know my CPU percentage has been higher lately. Here’s what it looks like over the last 30 days.

And over the last 24 hours.

Last night I created a support ticket with Digital Ocean. And today it miraculously works. It makes me suspicious, but I can’t imagine a business model where you throttle your customers until they call you on it. I mean except for the cable and cell phone industries.

So I’m going to enjoy it while it lasts. I’m also going to get in an Excel post today before I have more problems.

Sync Pivots from dropdown

Over at the Excel Guru forum, Yewee asks:

I have 3 sheets in my excel worksheet.

1. Org
2. DataSource
3. Pivots Table

My Pivot table will get the data from the DataSource sheet. I will like to have the filter of the Pivot Table from one of the cell in Org Sheet.

How can I do that?

Incredibly easily, if you have Excel 2010 or later…because:

  • a PivotTable with nothing but one field in the Filters pane looks and behaves pretty much exactly like a Data Validation dropdown does; and
  • that PivotTable can be hooked up to the other PivotTables via slicers, so that it controls them.

If you’re a long-time reader of this blog you probably already know that, and may want to skip to the end to find a bit of VBA that makes setting up Slicers slightly more easy. But if you came here via Google, then pull up a pew and read on.

So let’s say these are the two Pivots that you want to control via a dropdown, and you want to put the dropdown where the red rectangle is:

Two Pivots and target


First, create a new PivotTable from the datasource that the other pivots share (or make a copy of one of the existing Pivots) and in the PivotTable Fields pane add the field you want to filter the other Pivots by to the Filters pane. (If you created this Pivot by copying another, remove any other fields that might appear).

Faux DV and Fields List

Great: Now you have a PivotTable masquerading as a Data Validation Dropdown. From now on, I’ll call it the ‘Master Pivot’. So just drag that Master Pivot where you want it:

Faux DV and Pivots


From the ANALYZE tab of the PivotTable Tools contextual menu in the ribbon, click the Insert Slicer icon:

Insert Slicer


…and from the menu that comes up, choose the field name that matches the field you put in the Master Pivot:

Chosen field

…and your slicer will magically appear:

Slicer added


Now we connect that Slicer to the other PivotTables. To do that, right click on the Slicer that just appeared, and click the Report Connections option:

Right Click


You’ll see from the Report Connections box that comes up that currently it’s only connected to one PivotTable – which of course is the Master PivotTable that we used to insert the slicer in the first place:

Report Connections Master


What we want to do is connect it to the other PivotTables, by checking those other checkboxes:



(Optional) We might want to make it so that the user can only select one thing at a time by clicking on the Master Pivot filter dropdown, and unchecking Select Multiple Items, if that’s your intent:

Dont select multiple items


…and now all we need to do is move that Slicer somewhere out of sight (but don’t delete it):

Faux DV and Pivots


Now when we select a region from that Master Pivot dropdown…

Select Region

… all the other Pivots are filtered to match:



That’s it…job done. As simple as possible, and no simpler.

Actually that’s a lie…unless there’s a good reason not to, it’s much simpler just to use a Slicer in the first place, and not bother with setting up the Master Pivot dropdown at all:

Just Use Slicer


Of course, that Slicer takes up much more room than our Master Pivot dropdown. So maybe that’s a good reason to use the Master Pivot approach, and not a slicer. Especially if we might want more than one dropdown to control all the Pivots and space is at a premium:

Multiple Dropdowns

Or you can do away with the Master Pivot altogether, and just set the slicers up between the actual ‘output’ pivots themselves, so that as soon as they change a PivotFilter setting in one of the Pivots, the others get changed too. (Note that this also happens with the ‘Master Pivot’ approach…it’s just that we don’t actually need to have that Master Pivot sitting there taking up space at all).

Programatically add and connect Slicers

I’ve always found it annoying that there’s no right-click option to add a Slicer to the currently selected PivotField. Plus connecting Slicers to multiple PivotTables is a drag. And also, I hate it how it adds new Slicers over the top of old slicers. So here’s some code that remedies all that:

Sub AddSlicer()
Dim pt As PivotTable
Dim ptOther As PivotTable
Dim pf As PivotField
Dim pc As PivotCache
Dim rng As Range
Dim sc As SlicerCache
Dim varAnswer As Variant
Dim bFoundCache As Boolean
Dim rngDest As Range

Set rng = ActiveCell

On Error Resume Next 'in case user has not selected a PivotField
Set pt = rng.PivotTable
Set pc = pt.PivotCache
Set pf = rng.PivotField
On Error GoTo 0

If pt Is Nothing Then Exit Sub

If pf.Orientation <> xlDataField Then
    Set rngDest = Intersect(ActiveCell.EntireRow, ActiveCell.Offset(, ActiveCell.CurrentRegion.Columns.Count + 1))
    On Error Resume Next 'SlicerCache might already exist
    With rng
        If pt.PivotCache.OLAP Then
            Set sc = ActiveWorkbook.SlicerCaches.Add2(pt, .PivotField.CubeField.Name)
        Else:  Set sc = ActiveWorkbook.SlicerCaches.Add2(pt, .PivotField.Name)
        End If
       sc.Slicers.Add SlicerDestination:=ActiveSheet, Top:=rngDest.Top, Left:=rngDest.Left
    End With
    If Err.Number > 0 Then 'SlicerCache already existed. Work out what it's index is
        On Error GoTo 0
        For Each sc In ActiveWorkbook.SlicerCaches
            For Each ptOther In sc.PivotTables
                If ptOther = pt Then
                    bFoundCache = True
                    Exit For
                End If
            Next ptOther
            If bFoundCache Then Exit For
        Next sc
    End If

    varAnswer = MsgBox(Prompt:="Make Slicer control the " & pf.Name & " field in all Pivots on the same sheet?", Buttons:=vbYesNo)
    If varAnswer = vbYes Then
        For Each ptOther In ActiveSheet.PivotTables
            If ptOther.CacheIndex = pt.CacheIndex And ptOther.Parent.Name = pt.Parent.Name Then
                sc.PivotTables.AddPivotTable ptOther
            End If
    End If

Else: MsgBox "You can't add a Slicer to a Values field."
End If
End Sub

In addition, the below code will add the Add Slicer icon to the right-click menu that comes up when you right click on a PivotField:

Option Explicit

Private Sub Workbook_Open()
End Sub
Private Sub Workbook_BeforeClose(Cancel As Boolean)
End Sub

Sub AddShortcuts()
    Dim cbr As CommandBar

    Set cbr = Application.CommandBars("PivotTable Context Menu")

    With cbr.Controls.Add(Type:=msoControlButton, Temporary:=True)
        .Caption = "Add Slicer"
        .Tag = "AddSlicer"
        .OnAction = "AddSlicer"
        .Style = msoButtonIconAndCaption
        .Picture = Application.CommandBars.GetImageMso("SlicerInsert", 16, 16)
    End With

End Sub
Sub DeleteShortcuts()
    Dim cbr As CommandBar
    Dim ctrl As CommandBarControl
    Set cbr = Application.CommandBars("PivotTable Context Menu")

    For Each ctrl In cbr.Controls
        Select Case ctrl.Tag
        Case "AddSlicer"
        End Select
    Next ctrl
End Sub

…meaning whenever I right click on a PivotField I get this:



Clicking on that adds a Slicer to the selected field automatically, plus asks you:

Control all pivots


Hell yes, I do!

Here’s a sample file: