Array & Lookup Formulas Slow To Calculate
Jan 3, 2008
I am looking for ideas on how to speed-up one workbook. I have a spreadsheet with hundreds of lookup formulas and array formulas which are very slow to recalculate (takes around 5 min). Good thing about it is that these formulas are located in a specific range and that I need to run them only once a day (in the morning). Since I need to refresh the rest of the spreadsheet frequently, I am looking for an idea on how to isolate this resource heavy areas.
One solution I've been thinking about is moving these complex and slow formulas to VBA and run them only when needed. Can anybody assist me with the best and easiest way of doing this. Ideally I would want to leave option to the user to later edit this formula. Does anybody have any experience with weather it is best to migrate complete formulas to VBA or maybe leave formulas in the spreadsheet and run them based on predefined flag (that I can switch on or off from the code)?
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Dec 24, 2007
I have an Excel file that has a certain amount of Array Formulas. It takes 30 seconds to calculate every time the user makes a change. Some users do not have the Status Bar showing, and they think that Excel is "locked up". I want to make a user form that will appear when the Stats Bar is "Calculating..." There are a lot of "progress indicator" tutorials on this site, but they all seem to relate to VBA code being inserted in between certain lines. That doesn't apply. My Excel file has no VBA. It just takes a long time to recalculate. I want a VBA form to appear, that will match the % progress shown on the Status Bar, whenever a change is made to the spreadsheet.
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Dec 29, 2007
Im having an awful time with the time it takes to calculate my formulas. I have probably written some of them ineffiecent.
=INDEX( Website_Query!$A$2:$Z$10000,MATCH(1,(Website_Query!$A$2:$A$9725=B1144)*(Website_Query!$C$2:$C$9725="EA "),0),4)
=Q1144*2
=IF(ISERROR(VLOOKUP(A1144,pricing!A$2:AL$1547,38,FALSE)),"",VLOOKUP(A1144,pricing!A$2:AL$1547,38,FALSE))
=IF(ISERROR(Q1144+AR1144),"",Q1144+AR1144)
=IF(AK1086="q2",AL1086+AS1086,IF(AM1086="q2",AN1086+AS1086,IF(AO1086="q2",AP1086+AS1086,IF(AQ1086="q2",AR1086+AS1086,""))))
="q"&INDEX(Website_Query!$A$2:$L$7725,MATCH(1,(Website_Query!$A$2:$A$7725=$B1086)*(Website_Query!$C$2:$C$7725=$C1086),0),5)
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Oct 14, 2008
I I have a excel document which has a sheet containing a large number of array formulas.
I turned the automatic calculation off.
However, even when I press F9 to calculate the cells it just crunches, gets stuck at “Calculating 0%” and then crashes.
The majority of the array formulas are IF queries with multiple criteria.
Would it speed up the calculation if I didn’t use array formulas?
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Jan 3, 2010
I have a blank workbook that I am just about ready to deploy, but it is very slow to calculate. I know I can manually calculate, but I would rather the workbook just be fast and calculate on its own. The workbook is blank now, but will be used all of 2010 and will ultimately end up being around 20,000 lines. So, I have built in the formulas and conditional formatting into the 20,000 lines now so I don’t have to continually add lines.
So, the questions are…
What part of the workbook is slowing it down?
Here is how the tabs breakdown:
NOTESJust text no formulas
DATA20,000 Rows
1 formula of conditional formatting (Covers entire 20,000 rows and all columns except A)
4 columns with formulas (2 using VLOOKUP, 1 using SUMIF, 1 simple addition)
REPORT2 pivot tables linking to DATA
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Jun 13, 2014
I built a very basic refresh button that enters formulas into cells.
.Range("C12").Value = "=SUMIFS(Inventory!$R:$R,Inventory!$M:$M,'Frozen Dashboard'!$D$3,Inventory!$A:$A,
'Frozen Dashboard'!C$11,Inventory!$Q:$Q,'Frozen Dashboard'!$B12)"
Basically, I have around 50 of these individual cells that I am pasting the formula into.
Currently is taking 28-32 seconds to refresh these 50 cells.
Anyways to expedite these refreshes ?
I am also using the :
application.enableevents = false, and application.screenupdating = false
but still way to slow..
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Apr 28, 2007
I have this formula: =VLOOKUP(E24,OFFSET(Data!E$23,0,0,MATCH(TRUE,Data!E$23:INDEX(Data!E:E,MATCH(9.99999999999999E+307,Data!E:E))="",0)-1,14),14,0) in column e and looking up from a sheet called Data!. This formula looks up off of column e into the data worksheet from the point where I insert a blank row at a chosen point in the data. The problem is that this formula needs to calculate in excel where is shows in the bottom left of the screen...calculating 5%...50% etc. and I have to wait. Does anyone know how to rewrite this formula so it does not have to re-calculate after each move? This formula above requires a CTRL+****+ENTER.
What the formula above does is simply looks up into the other worksheet from column e and looks up only into the data where I insert a blank row. So it creates a lookup range at the point where the blank row is inserted.
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Jan 28, 2011
I have an excel file which consist of 12 sheets. The main sheet contain columns from A to EL and 556 rows.
At the moment, i have data on from column A to AI (we will add more data day by day). All data in main sheet are linking to another 4 sheets which basically using IF, VLOOKUP, and Conditional Formatting. My file originally was only 4.6MB in size.
However, after adding the formula (IF & Vlookup) and conditional formatting to the fourth sheet (number of columns is from A to BZ) then the file size increased from 4.6MB to 13.7MB.
My excel file also became very slow and i need to take off the Automatically Calculation option.
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Dec 11, 2008
I have formulas in a column and they are working unless I edit them to include another function, more cells, whatever, then they display as formulas instead of the result. I've gone to Tools --> Options --> View and the Formulas box is not checked. As well automatic calculation is on not manual.
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Feb 21, 2009
Assuming 1st row is a header row
Sheet1, Column A
1230000_XL07 - WB OPS
1230001_XL08 - WB OPS
1230002_XL09 - WB OPS
Sheet 2, Column A
1230000
How do I lookup 1230000 and return 1230000_XL -07 WB OPS in B2
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Jun 27, 2008
I've got a report that I churn out every month that calculates total spend, average daily spend, median, number of people etc and as well as that I have to calculate formulas based on the top 20% and bottom 80% of the data. The attached sheet shows the number of people under different business areas, and costs in descending order.
At the moment I do it manually so I filter for each business area and work out the top 20% of people in range and then work out the number of employees, mean, median and SUM of the top 20% and bottom 80%. Below I have 20 people and I take the top 20% which is 4 and then I work out the Total number of people, SUM and median of the top 20 and I do the same for the bottom 80.
EXAMPLE:
TOP 20%
£1,330.00
£1,070.36
£997.50
£840.00
Employees - 4
SUM - £4,237.86
Median - £1,033.93............................
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Feb 15, 2007
To start, have 1 sheet with approx 25 columns of data and i need one column to check 3 others + another sheet to complete its fields.
In column M i need to enter some prices from another worksheet (tag name 'prices') but these prices depend on whats completed in the fields in columns L, T & V.
Column L has fields completed with eg. Houses, Offices, Warehouses
Column T has some fields completed with eg. B1, D, E (these are just zonal refs)
Column V has some fields completed with numbers 1,2,3
Prices worksheet has 4 columns
A = Property (same heading and fields completed as Column L on first worksheet)
B = Standard Price (this has prices in fields that correspond to the properties in A above)
C = Cresta Price (same description as above)
D = Wind Price (same description as above)
I need column M (blank fields) to look at L (heading 'property') then add in Standard Price from B (worksheet prices) then check to see if any fields are completed in Columns T & V and if they are then it needs to addon the prices from either columns C or D from Prices worksheet.
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Dec 28, 2007
I am a little lost on this, and have tried to remedy my issue by searches to no avail. I have a cell formula that references another cell:
Cell A1 (=A3) where Cell A3 = 1
Cell A1 displays the text "=A3" and not the value of 1. Autocalc is on, and the worsheet and workbook is unprotected.
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Nov 28, 2008
Attached is the file where I want to derive Min Date of seq A and asset Type Char.
SeqAsset TypeStDateEndDate
AChar21-11-200828-11-2008
BEnv22-11-200829-11-2008
CProp30-10-200830-11-2008
AChar03-11-200801-12-2008
AChar04-11-200801-12-2008
AChar05-11-200801-12-2008
AChar06-11-200801-12-2008
AChar07-11-200801-12-2008
I want to find the Minimum Date of Seq "A" and of Asset type "Char". I used following Array Formulas but showing the correct answer 30-10-2008MIN(IF(A2:A9="A",C2:C9="Char"),(D2:D9)) But Istead of 03-11-2008 it's showing 30-10-2008 date of seq C and of asset type Prop
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Oct 14, 2005
I typed in the word array into Excel Help and found this item
"About array formulas and how to enter them"
I am trying to duplicate the first example and cannot
Ex: =Average(if(C5:C14="Europe",D5:D14))
I tried something similar to this (diff cell ref) and I get #VALUE
Do I need to check off an addin or something?
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Sep 12, 2012
Do array formulas work if the array is across sheets instead of across columns or rows? I'm getting a #Ref! error when I try to use an "across sheets" array.
I'm doing this:
=sum(if('Sheet 1:Sheet 2'!A1=1,'Sheet 1:Sheet 2'!A2,0))
With a CTRL + SHIFT + ENTER return.
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Apr 20, 2004
I have been lurking around for past month learning lots from MrExcel's wonderful web site. One of the many things I learned was how to improve my spreadsheets with Array Formulas, but today I ran into a problem on a new spreadsheet I'm building for work.
Here's the problem: I have 39 coworkers. For each coworker, I have 14 Array Formulas using SUMPRODUCT command with up to 5 "conditions", similar to this example:
{=SUMPRODUCT((user=$A$5)*(task=AO$3)*(DateChecked>0)*((Error="Error Removed")+(Error="Error Converted to an FYI")))}
Each condition such as "user" and "task" is a static named range of 5000 cells. This spreadsheet will hold one week's worth of my coworkers' work. This past week they have processed about 2500 items. To be safe, I doubled this number to determine the static named range size.
For each worker I have 56 columns (one for each possible task which a coworker can process).
So for each coworker, there will be 14 * 56 = 784 Array Formulas.
Currently my spreadsheet only has a single coworker defined, so I only have 784 Array Formulas, but it takes 35 seconds at 100% CPU Utilization when I press F9 (Calculate all formulas). Right now, I am running this on my Home PC (a 400 MHz PII PC with 256 Megs of RAM, OS is Win2000 at SP4 maint level and Excel 2002), but it is equally slow at work (1.7 GHz Celeron with 256 MB of RAM running Win2K SP4 and Excel 2K).
I haven't tested yet, but even if I assume a linear progression, with 39 coworkers I am thinking it is possible the amount of time for Excel to recalculate all the formulas will be 39 times longer than it is currently. This will be close to 22 minutes. That is a long time to wait! It will be even worse if my testing shows the amount of time Excel takes to evaluate the array formulas is exponential instead of linear...
...784*39 = 30,576 formulas...
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Apr 18, 2006
I am having little luck creating an array to work with 3 critieria. Here is what I am trying to do: In the attached spreadsheet I am trying to show a total for each "Global Process" based on if "Reason Cancelled" and a date greater than or equal to March 1st, 2006. Here is what I currently have for the array formula: note: this is an Excel formula not VBA. I couldnt find the right code
=SUM(( 'Raw Data(Added_Cancelled)'!$D$2:$D114="Fulfillment")*('Raw Data(Added_Cancelled)'!$I$2:$I$150="Other")*('Raw Data(Added_Cancelled)'!$H$2:$H114>="2006-03-01 00:00:00"))
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Dec 10, 2013
I am having trouble with formula to calculate daily results.I can only calculate results base on daily plan.
please follow this link [URL] .....
Part A
2/12
3/12
4/12
5/12
6/12
plan
0
0
50
50
0
[Code] .....
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Mar 11, 2009
I am thinking that I must have something set up wrong some place, but have not done anything that should have changed my formulas
Its not that they are gone but just are not auto calculating.
I tried just a basic sample invoice and the figures do not calculate without manual calclation
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Sep 28, 2011
I need to calculate the amount of time my daughter will be in daycare which varies each week. I have to give the same sheet that I have hidden calculations on to the center. I have to have the time she arrives at 7:15 AM (Cell A1) however they don't start to bill until 7:45 AM (Cell A2) and continues until 11:30 AM (Cell B1) and need C1 to be total hours between A2 and B1
I need a formula that will calculate the hours between 7:45 AM to 11:30 ONLY if cell A1 has a time entered in it. If A1 is blank then it should calculate 0 hours.
Example (WITH something entered in A1)
Arrive Time End Billable Time Total Billable Time
A1 - 7:15 am to B1 - 11:30 am C1 - 3.75 Hours
Start Billable Time
A2 7:45 am
Example (WITHOUT something entered in A1)
Arrive Time End Billable Time Total Billable Time
A1 - to B1 - 11:30 am C1 - 0.00 Hours
Start Billable Time
A2 7:45 am
If it has to be in 24 hour time is there a formula that I can enter in another cell to convert 12 hour time to 24 hour time again ONLY if A1 has something entered in it?
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Apr 2, 2008
I am using =COUNTIF formulas to calculate different conditions. such as, calculating how much of one product do we have and how much is is received under 30 days. i want to combine those formulas in one cell to calculate two conditions in different columns.
1-So first i found out the date difference. I used =DATEDIF(Sheet1!C10,Sheet1!E10,"d")
2-Then I found out how many of one type do we carry, using the =COUNTIF.
=COUNTIF(Sheet1!J2:J3810,"DAZ")
3-That was easy, But now i have to sepereate them into 30 or less, 60 days or less, 90 days or less.
Then i used =COUNTIF(D2:D3810,"
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Jun 7, 2006
I would like to ask the formulas for this... for example:
$35 .. discount 10% + 25%
instead of having so many cells to calculate $40 x (100%-10%) = $36
$36 x (100% - 25%) = $27
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Sep 9, 2009
This is so hard to explain so see my example and my attachment. example: If "314A" is in column A and "4031" is in column B then return the value in column G.
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Nov 20, 2006
I have a list that I have validated as a list with a blank on top to enable data override.
I have a formula that uses the content of this cell, c7 say, to perform so vlookup function and return a result. However, when the cell c7 is blank( meaning the blank cell in the list is selected), the result is #N/A.
I am trying to have that result be a blank.
The formula is as follows, assuming c7 is the data containing cell:
=IF(OR(LEFT($C7,1)="W",VLOOKUP($C7,Table2B_1,7)>9,ISBLANK(C7))," ",VLOOKUP($C7,Table2B_1,2))
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Aug 9, 2008
I would like to sum results, all but #NA results. For example,
=Sum(I8:I10)
How do you manipulate the sum formula so it ignores the #NA 's? zip attached.
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May 14, 2009
Does anyone know how to activate a block of different array formulas at once??
Example:
N7:Q80 has a total of 296 Array Cells. Each has a unique formula & I cannot just drag to fill these nor can I activate all at once.
In the future, I don't want to have to manually activate them w/F2, CTRL+SHIFT+ENTER.
btw, Why do I have to press F2? Is that only in Excel 2007? I googled pretty extensively & don't see an option how to only press CTRL+SHIFT+ENTER. It would be nice not to have to press F2 everytime.
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Nov 16, 2013
I would like to master the dreaded array formulas. Any Excel based accounting consolidation tool or other consolidation tool out there that I could adapt to consolidate group accounts on a monthly basis.
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Dec 28, 2007
This formula is returning 0.2578 when it should return 2.473
{=AVERAGE(('Data-Design'!E2:E6000)*('Data-Design'!Q2:Q6000=1))}
What am I not understanding?
I want the average of column E when column Q=1
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Oct 3, 2007
I would like to set up VBA codes to generate a variable number of transition matrices. I would like to know how I can define dynamic ranges instead of coding each and every range. In the codes below, I have to define each range one by one instead of using a loop.
Sub TransitionMatrix()
Dim P1 As Range
Set P1 = Cells(2, 2).Resize(3, 3)
Dim P2 As Range
Set P2 = P1.Offset(5, 0).Resize(3, 3)
P2.Cells(0, 1) = "P2"
For i = 1 To 3
For j = 1 To 3
P2.FormulaArray = "=MMULT(" & P1.Address & "," & P1.Address & ")"
P2.BorderAround Weight:=xlMedium
Next j
Next i
Dim P3 As Range
Set P3 = P2.Offset(5, 0).Resize(3, 3)........................
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