I need to identify the cost of an engine depending which parts it will use.
I have one sheet that has the cost of each part for each engine model. There are 3 engine models and nearly 500 parts (!Parts).
In another sheet I try to sum the value of all the various combinations of parts. (!EngineCost). I use a "1" to indicate the inclusion of that part. I grab the prices from !Parts and total them per engine size.
At the moment I am doing this very manually (see below). Is there a better way to do this?
=IF(O3=1,'Parts'!$R$6,"0")+IF(P3=1,'Parts'!$R$7,"0")+IF(Q3=1,'Parts'!$R$8,"0")
Thanks!
Here is link to a sample sheet https://www.dropbox.com/s/wbh5muf7721mk0s/engine.xlsx
My first hunch was that you could use the following formula:
=SUMIFS(O3:O6, 1, 'Parts'!$R$6:$R$8)
This sum the values in 'Parts'!$R$6:$R$8 when the corresponding cell in O3:O6 is equal to 1.
However, as #simoco pointed out, you have a transpose - one array is transposed relative to the other. That make this very slightly more challenging. You need two steps:
find the cells that have a value of 1
sum those cells
The following can do it:
=SUMPRODUCT((O3:Q3=1), TRANSPOSE('Parts'!$R$6:$R$8))
entered as an array formula*); or, taking advantage of the fact that matrix multiplication is really the element by element multiplication of a row vector with a column vector, followed by taking the sum:
=MMULT(I3:K3,IF(G4:G6=1,1,0))
again entered as an array formula*).
*) Array formula is entered by pressing ctrl-shift-enter on PC, or cmd-shift-enter on Mac.
Related
I need help in writing a formula in cell b7. The formula must look to the right and multiply the nonempty cells by the corresponding value in row 3, and I would like to sum up the results.
File link provided.
FILE LINK
ScreenShot
Please see my comment to your original post.
That said, I will try to explain how to approach this as I think you intend. (This solution will be a Google Sheets solution which will not work in Excel.)
The first thing you will need to do is to delete everything from Row 11 down: all of your examples and notes must be deleted for the following proposed formula to work correctly.
Once you have no superfluous data below your main chart, delete everything from B6:B (including the header "Total").
Then, place the following formula in cell B6:
={"TOTAL"; FILTER(MMULT(C7:G*1, TRANSPOSE(C$3:G$3*1)), A7:A<>"")}
This formula will return the header text "TOTAL" (which you can change within the formula itself if you like) followed by the calculation you want for each row where a name is listed in A7:A.
MMULT is a difficult function to explain, but it multiplies one matrix ("grid") or numbers by another matrix ("grid") and returns the sum of all products per row (or per column, depending on how you set it up) —— which is what you are trying to do.
MMULT must have every element of both matrices be a real number. To convert potential nulls to zeroes, you'll see *1 appended to each range (since null times 1 is zero).
This assumes that all data entered into C7:G and C3:G3 will always be either a number or null. If you enter text, you'll throw the formula into an error. If you think accidental text entries in those ranges are possible, use this version instead:
={"TOTAL"; FILTER(MMULT(IFERROR(C7:G*1, ROW(C7:G)*0), TRANSPOSE(IFERROR(C$3:G$3*1, COLUMN(C$3:G$3)*0))), A7:A<>"")}
The extra bits use IFERROR to exchange error-producing entries with zeroes, since MMULT must have every space in both matrices filled with a real number.
I am new to Excel/Google Sheets. I have a difficulty of writing a formula to compare columns as a pair-wise since the formula would be
so big as the day goes.
For example, there're 2 main columns Foo and Bar. I want to find the total number of days that Foo
and Bar are equal so the current formula is =IF(A3 = G3, 1, 0)+IF(B3 = H3, 1, 0)+IF(C3 = I3, 1, 0)+...
But this is kind of tedious because there're ~40 days to compare with. Are there any other alternatives
to write a formula in efficient way? Either Google-App-Scripts or Excel Formula is appreciated.
Cheers!
Give a try on below google-sheet formula. Adjust ranges as you need.
=ArrayFormula(SUM(IF(A3:E3=G3:K3,1,0)))
Assuming that you're needing to get such a total for each row and not merely a single row, try this:
=ArrayFormula(IF(A3:A="",,MMULT(IF(A3:F=G3:L,1,0),SEQUENCE(COLUMNS(A:F),1,1,0))))
Of course you will need to adjust the three ranges to match your own FOO and BAR ranges.
This one formula will produce all results for all rows.
The MMULT function is tricky to explain to those as yet unfamiliar with it. But it's a powerful tool. I'll add a picture I created that may best explain what it does:
By making the second matrix a simple SEQUENCE of 1s as long as the other matrix is wide, we wind up multiplying everything by 1 before adding together. And since anything multiplied by 1 is itself, this combination serves only to do a row-by-row add.
Things to keep in mind with MMULT:
1.) Every cell in every matrix must be a number or it will produce an error.
2.) As in the above formula, there are ways to use either/or conditions to turn every cell in a matrix into a number.
I have a (large) array of data in Excel of which I need to compute the average value of certain values in one column, based on the values of another column. For example, here's a snippet of my data:
So specifically, I want to take the average of the F635 mean values corresponding with Row values of 1. To take it a step further, I want this to continue to Row values of 2, Row values of 3 etc.
I'm not familiar with how to run code in Excel but have attempted to solve this by using the following:
=IF($C = "1", AVERAGE($D:$D), "")
which (to my understanding) can be interpreted as "if the values (anywhere) in column C are equal to 1, then take the average of the corresponding values in column D."
Of course, as I try this I get a formula error from Excel.
Any guidance would be incredibly appreciated. Thanks in advance.
For more complicated cases, I would use an array-formula. This one is simple enough for the AVERAGEIF formula. For instance =AVERAGEIF(A1:A23;1;B1:B23)
Array-formula allows for more elaborate ifs. To replicate the above, you could do =SUM(IF($A$1:$A$23=1;$B$1:$B$23;0))/COUNT(IF($A$1:$A$23=1;$B$1:$B$23;0)).
Looks like more work but you can create extremely elaborate if-statements. Instead of hitting ENTER, do CTRL-ENTER when entering the formula. Use * between criteria to replicate AND or + for OR. Example: SUM(IF(($A$1:$A$23="apple")*($B$1:$B$23="green");$C$1:$C$23;0)) tallies values for green apples in c1:c23.
Your sample data includes three columns with potential ifs so my guess is that you're going to need array formulas at some point.
Excel already has a builtin function for exactly this use; AVERAGEIF().
=AVERAGEIF(C:C,1,D:D)
I'm working on data from a population of people with allergies. Each person has a unique ExceptionID, and each allergen has a unique AllergenID (451 in total).
I have a data table with 2 columns (ExceptionID and AllergenID), where each person's allergies are listed row by row. This means that the ExceptionID column has repeated values for people with multiple allergies, and the AllergenID column has repeated values for the different people who have that allergy.
I am trying to count how many times each pair of allergies is present in this population (e.g. Allergen#107 & Allergen#108, Allergen#107 & Allergen#109,etc). To keep it simple I've created a matrix of 451 rows X 451 columns, representing every pair (twice actually because A/B and B/A are equivalent).
I somehow need to use the row name (allergenID) to lookup the ExceptionID in my data table, and count the cases where that matches the ExceptionIDs from the column name (also AllergenID). I have no problem using Vlookup or Index/Match, but I'm struggling with the correct combination of a lookup and Sumproduct or Countif formula.
Any help is greatly appreciated!
Mike
PS I'm using Excel 2016 if that changes anything.
-=UPDATE=-
So the methods suggested by Dirk and MacroMarc both worked, though I couldn't apply the latter to my full data set (17,000+ rows) because it was taking a long time.
I've since decided to turn this into a VBA macro because we now want to see the counts of triplets instead of pairs.
With the 2 columns you start with, it is as good as impossible... You would need to check every ExceptionID to have 2 different specific AllergenID. Better use a helper-table with ExceptionID as rows and AllergenID as columns (or the opposite... whatever you like). The helper table needs a formula like:
=COUNTIFS($A:$A,$D2,$B:$B,E$1)
Which then can be auto-filled. (The ranges are from my example, you need to change them to your needs).
With this helper-matrix you can easily go for your bigger matrix like this:
=COUNTIFS(E:E,1,INDEX($E:$G,,MATCH($I2,$E$1:$G$1,0)),1)
Again, you can auto-fill with this formula, but you need to change it, so it fits your needs.
Because the columns have the same ID2 (would be your AllergenID), there is no need to lookup them because E:E changes automatically with the auto-fill.
Most important part of the formulas are the $ which should not be messed up, or you can not auto-fill it.
Picture of my self-made example (formulas are from the upper left cell in each table):
If you still have any questions, just ask :)
It can be done straight from your original set-up with array formulas:
Please note that array formulas MUST be entered with Ctrl-Shift-Enter, before copying across and down:
In the example pic, I have NAMED the data ranges $A$2:$A$21 as 'People' and $B$2:$B$21 as 'Allergens' to make it a nicer set-up. You can see in the formula bar how that looks as a formula. However you could use the standard references like this in your first matrix cell:
EDIT: silly me, N function is not needed to turn the booleans into 1's and 0's, since multiplying booleans will do the trick. Below formula works...
SUM(IF(MATCH($A$2:$A$21,$A$2:$A$21,0)=ROW($A$2:$A$21)-1, NOT(ISERROR(MATCH($A$2:$A$21&$E2,$A$2:$A$21&$B$2:$B$21,0)))*NOT(ISERROR(MATCH($A$2:$A$21&F$1, $A$2:$A$21&$B$2:$B$21,0))), 0))
Then copy from F2 across and down. It can be perhaps improved in technique with sumproduct or whatever, but it's just a rough example of the technique....
On the illustration all formulas are array. The range that each formula spans is bordered, and the first formula on each block is written on the top of that block.
Range A4:A103 is an input vector (which is numeric), range C4:G23 is a given (input) permutation of the rows of A4:A103 (necessarily positive non-zero integer numbers not greater then the length of the input vector).
Let us I interpret the permutation matrix as set of rows.
How to compute for each row in a constant number of cells the minimal number in the input vector? By the constant number of cells, I mean solution, that would require fixed number of cells for each row, regardless of the number of columns in permutation. (In the production case each dimension is much, much bigger; there is about 100 columns in the permutation matrix.)
I don't ask for VBA solutions. If it is necessary the solution can use a free and publicly available Excel add-on, like MoreFunc, but I'd prefer to keep it vanilla Excel 2007 or later.
I thought that the formula {=MIN(INDEX(INDIRECT($A$2);$C4:$G4))} would solve my problem. Surprisingly, Excel seems to not take into account the array nature of the formula, and evaluates it as if it was written as =MIN(INDEX(INDIRECT($A$2);$C4) which is equivalent to dysfunctional =INDEX(INDIRECT($A$2);$C4).
On the other hand, we can see the argument to the MIN is understood as array in the range I4:M4.
INDEX works in some strange ways!
Normally INDEX can't return an array - although you seem to have found the one exception to that - when it's an array formula entered in a range.
You should be able to use OFFSET to return the required array that will work within MIN, i.e. with this formula
=MIN(N(OFFSET(INDIRECT($A$2);$C4:$G4-1;0)))
confirmed with CTRL+SHIFT+ENTER