I'm looking for a way to compare multiple rows with data to each other, trying to find the best possible match. Each number in every column must be an approximately match the other numbers in the same column.
Example:
Customer #1: 1 5 10 9 7 7 8 2 3
Customer #2: 10 5 9 3 5 7 4 3 2
Customer #3: 1 4 10 9 8 7 6 2 2
Customer #4: 9 5 6 7 2 1 10 5 6
In this example customer #1 and #3 is quite similar, and I need to find a way to highlight or sort the rows so I can easily find the best match.
I've tried using conditional formatting to highlight the numbers that are the similar, but that is quite confusing, because the amount of data is quite big.
Any ideas of how I could solve this?
Thanks!
The following formula entered in (say) L1 and pulled down gives the best match with the current row based on the sum of the absolute differences between corresponding cells:-
=MIN(IF(ROW($C$1:$K$4)<>ROW(),(MMULT(ABS($C1:$K1-$C$1:$K$4),TRANSPOSE(COLUMN($C$1:$K$4))^0))))
It is an array formula and must be entered with CtrlShiftEnter.
You can then sort on column L to bring the customers with lowest similarity scores to the top or use conditional formatting to highlight rows with a certain similarity value.
EDIT
If you wanted to penalise large differences in individual columns more heavily than small differences to try and avoid pairs of customers which are fairly similar except for having some columns very different, you could try something like the square of the differences:-
=MIN(IF(ROW($C$1:$K$4)<>ROW(),(MMULT(($C1:$K1-$C$1:$K$4)^2,TRANSPOSE(COLUMN($C$1:$K$4))^0))))
then the scores for your test data would come out as 7,127,7,127.
I'm assuming you want to compare customers 2-4 with customer 1 and that you are comparing only within each column. In this case, you could implement a 'scoring system' using multiple IFs. For example,:
A B C D E
1 Customer 1 1 1 2
2 Customer 2 1 2 2
3 Customer 3 0 1 0
you could use in E2
=if(B2=$B$1,1,0)+if(C2=$C$1,1,0)+if(D2=$D$1,1,0)
This will return a 'score' of 1 when you have a match and a 'score' of 0 when you don't. It then adds up the scores and your highest value will be your best match. Copying down would then give
A B C D E
1 Customer 1 1 1 2
2 Customer 2 1 2 2 2
3 Customer 3 0 1 0 1
so customer 2 is the best match.
Related
I have strings of spreadsheet data that need counting by 'type' but not instance.
A B C D
1 Lin 1 2 1
2 Tom 1 4 2
3 Sue 3 1 4
The correct sum of students assigned to teacher 1 is 3, not 4. That teacher 1 meets Lin in lessons B and D is irrelevant to the count.
I borrowed a formula which works in Excel but not in Google Sheets where I and others need to keep and manipulate the data.
F5=SUMPRODUCT(SIGN(COUNTIF(OFFSET(B$2:D$2, ROW($2:$4)-1, 0), E5)))
A B C D E
2 Lin 1 2 1
3 Tom 1 4 2
4 Sue 3 1 4
5 1 [exact string being searched for, ie a teacher name]
I don't know what is not being understood by Google Sheets in that formula. Does anyone know the correct expression to use, or a more efficient way to get the accurate count I need, without duplicates within rows inflating the count?
So this is the mmult way, which works by finding the row totals of students assigned to teacher 1 etc., then seeing how many of the totals are greater than 0.
=ArrayFormula(sum(--(mmult(n(B2:D4=E5),transpose(column(B2:D4)))>0)))
or
=ArrayFormula(sum(sign(mmult(n(B2:D4=E5),transpose(column(B2:D4))))))
Also works in Excel if entered as an array formula without the ArrayFormula wrapper.
A specific Google Sheets one can be quite short
=ArrayFormula(COUNTUNIQUE((B2:D4=E5)*row(B2:D4)))-1
counting the unique rows containing a match.
Note - I am subtracting 1 in the last formula above because I am assuming there is at least one zero (non-match) which should be ignored. This would fail in the extreme case where all students in all classes are assigned to the same teacher so you have a matrix (e.g.) of all 1's. This would be more theoretically correct:
=ArrayFormula(COUNTUNIQUE(if(B2:D4=E5,row(B2:D4),"")))
I'm trying to use Excle's SUMIF to calculate totals of Col1 to Col5 for dates that are similar.
My formula is as follows =SUMIF($A2:$A7,A10,$B2:$F7), but this only gives me the total of a single column.
How can I get the Totals of all the columns based on the date like I've shown in my results.
Date Col 1 Col 2 Col 3 Col 4 Col 5
1/5/2017 1 2 2
1/5/2017 5 3 1
1/5/2017 9 5 5
2/5/2017 10 5 3
2/5/2017 20 10 3
2/5/2017 6 8 1 5
Desired Results
1/5/2017 15 7 7 3 1
2/5/2017 30 11 11 11 8
use below formula in cell B11
=SUMIF($A$2:$A$7,$A11,B$2:B$7)
Per the example you provided, One solution is to use SUMPRODUCT
Multiplies corresponding components in the given arrays, and returns the sum of those products
Microsoft Docs give a thorough example, but per SO etiquette, here is an example in case of link-rot: [FYI, I used absolute reference for easier filling across, arbitrary how you get it done though]
Forumlas shown:
Formula is kind of hard to see without clicking on image:
=SUMPRODUCT(($B$3:$B$8=$B$11)*C3:C8)
This basically breaks down like this, it searches the B:B column for a match, and it will naturally return a true or false for the match, or 0/1 counterparts, and multiplys that by the number found in the column to the right (C3:C8), so it will either be 1 * # = # or 0 * # = 0
So, I have this problem, I would like to find the average of a column by using the OR function to check criteria from adjusted columns, I tried putting OR into AverageIf function, fail, also tried the "Average(IF(OR(" again not the correct return. Thought it is a simple thing could be done easily but don't know why it doesn't work. So my table is something like this:
ID: Rate Check 1 Check 2 Check 3
1 5 1 1 1
2 3 1 1
3 2 1
4 4
5 5 1 1
6 3
7 4 1
I would like to find the average of the rate column by checking if there are any value in either Check 1; Check 2 or Check 3 columns, so in the above case i will get the average of all but row with the id 4 and 6. Is this possible without using a helper column?
You can use SUMPRODUCT()
=SUMPRODUCT(((C2:C8<>"")+(D2:D8<>"")+(E2:E8<>"")>0)*(B2:B8<>"")*B2:B8)/SUMPRODUCT(--((C2:C8<>"")+(D2:D8<>"")+(E2:E8<>"")>0)*(B2:B8<>""))
If your first ID starts in A2, use this formula (edited to handle empty values in the "Rate" column):
=AVERAGE(IF(MMULT(LEN(C2:E8)*LEN(B2:B8),ROW(INDIRECT("1:"&COLUMNS($C$1:$E$1)))),B2:B8))
If two households share, they create a tie and this tie has a kinship rank that does not change, no matter how often two households share with each other.
KINSHIP RANK EXAMPLE
As you can see, it doesn't matter in which "direction" the tie happened whether it was household 5 who shared to household 3 or vice versa, the kinship rank is still 1
HH1 HH2 RANK
5 3 1
3 5 1
Therefore, I do not need every tie that occurs between two households, but only the first instance that a tie occurred between the two households.
So here is a sample list of many households who shared with each other, sometimes sharing resources with themselves, sharing only once, or sharing multiple times with the same household.
TWO HOUSEHOLD WITH REPEATED TIES
COL.A COL.B
ROW HH1 HH2
1 1 1
2 1 2
3 1 3
4 2 1
5 2 4
6 3 1
7 3 2
8 3 4
9 4 2
This is what I need it to look like:
TWO HOUSEHOLDS WITHOUT REPEATED TIES
COL.A COL.B
ROW HH1 HH2
1 1 1
2 1 2
3 1 3
4 2 4
5 3 2
6 3 4
What I have done
I wrote a simple command for placing the HH1 and HH2 information into the same cell:
=A1&"|"&B1
In the case of the second row, this looks like 1|2 inside cell C2
HH1 and HH2 are combined in column C so how will I be able to compare all of the households in column C to each other? Perhaps a highlighting rule if a repeat happens? Or in another column list if it is a delete or a keep?
Thank you for your assistance everyone.
I suggest a simple COUNTIFS to do the job like this:
=(COUNTIFS(A$1:A1,B2,B$1:B1,A2)+COUNTIFS(A$1:A1,A2,B$1:B1,B2))>0
starting in C2 and then copy down. It will show TRUE for each row which is within the range above it and false if not. Ich checks for both x/y and y/x (the order doesn't matter)
Now simply filter col C to only show rows with TRUE in it. Then simply select and delete it.
This also works with non numerical values like names.
If you still have any questions, just ask ;)
You also can wrap it up to get more informations like this:
=IF((COUNTIFS(A$1:A1,B2,B$1:B1,A2)+COUNTIFS(A$1:A1,A2,B$1:B1,B2)),"",COUNTIFS(A:A,B2,B:B,A2)+COUNTIFS(A:A,A2,B:B,B2))
For C2 and copy down. C1 gets:
=COUNTIFS(A:A,B2,B:B,A2)+COUNTIFS(A:A,A2,B:B,B2)
This will show you only at the first occurrence how many times it is within the whole range.
All done by phone, may contain errors
Use =((A1*B1)/(A1+B1))*((A1*B1)+(A1+B1)) to create unique identifiers. Then use Remove Duplicates in the Data Tools Pane of the Data Tab to remove all rows containing duplicates. Or, alternatively, use something like =IF(IFNA(MATCH(A2,A$1:A1,0),TRUE())=TRUE,"First Share","") dragged and dropped from row 2 to identify First Shares.
I'm not sure how to ask this question without illustrating it, so here goes:
I have results from a test which has tested peoples attitudes (scores 1-5) to different voices on a 16 different scales. The data set looks like this (where P1,P2,P3 are participants, A, B, C are voices)
Aformal Apleasant Acool Bformal etc
P1 2 3 1 4
P2 5 4 2 4
P3 1 2 4 3
However, I want to rearrange my data to look like this:
formal pleasant cool
P1A 3 3 5
P1B 2 1 6
P1C etc
P1D
This would mean a lot more rows (multiple rows per participant), and a lot fewer columns. Is it doable without having to manually reenter all the scores in a new excel file?
Sure, no problem. I just hacked this solution:
L M N O P Q
person# voice# formal pleasant cool
1 1 P1A 2 3 1
1 2 P1B 4 5 2
1 3 P1C 9 9 9
2 1 P2A 5 4 2
2 2 P2B 4 4 1
2 3 P2C 9 9 9
3 1 P3A 1 2 4
3 2 P3B 3 3 2
3 3 P3C 9 9 9
Basically, in columns L and M, I made two columns with index numbers. Voice numbers go from 1 to 3 and repeat every 3 rows because there are nv=3 voices (increase this if you have voices F, G, H...). Person numbers are also repeated for 3 rows each, because there are nv=3 voices.
To make the row headers (P1A, etc.), I used this formula: ="P" & L2 & CHAR(64+M2) at P1A and copied down.
To make the new table of values, I used this formula: =OFFSET(B$2,$L2-1,($M2-1)*3) at P1A-formal, and copied down and across. Note that B$2 corresponds to the cell address for P1-Aformal in the original table of values (your example).
I've used this indexing trick I don't know how many times to quickly rearrange tables of data inherited from other people.
EDIT: Note that the index columns are also made (semi)automatically using a formula. The first nv=3 rows are made manually, and then subsequent rows refer to them. For example, the formula in L5 is =L2+1 and the formula in M5 is =M2. Both are copied down to the end of the table.