Let's say I have this:
A B
1 10 20
2 12 30
3 25 15
4 40 30
How do I find the row which have same value in column B and different value for column A when compared to all the rows above or below ?
I want to find this cell:
A2:B2
Update: NO revision necessary
Following feedback I have tested this equation (below) with 20k rows (link below) - happy to report back results as expected/all still in order. No changes necessary/warranted. This function works just fine/as expected. Beaut!
Explanation:
When testing large samples of data of type 'integer' (say) that range a common order of magnitude/size (i.e. have material probability of re-occurring), the probability of obtaining a unique value for field A (col B, below screenshot) reduces, due to the law of large numbers (variance is what leads to unique values, and this reduces as the sample size increases).
As a consequence, one may encounter results = !Calc# which simply means 'no unique values could be found in col A (or they could but only for when col C was also unique - although the probability of this is remote, it's mainly due to numerous other cells in respective columns containing identical data. Throw a negative 100 in column A (assuming all other values are positive real/integer number plane), and you should see my eqn. below return '-100' and whatever the corresponding 'col-C' data is (assuming that is not unique too, as I have mentioned)...
NOW - back to the solution already! :)
ORIGINAL SOLN:
This will give you back every such combination (besides {12,30} there is also {40,30}):
=FILTER(B2:B5&"-"&C2:C5,(COUNTIFS(B2:B5,"="&$B$2:$B$5)=1)*(COUNTIFS(C2:C5,"="&$C$2:$C$5)>1))
OneDrive excel-linked spreadsheet for your convenience here, taking careful note of restrictions per 1st comment to this proposed soln.
Screenshot
Notes
Assumes you have Office 365 version of Excel
I am working on a model of charging load of electric vehicle. I am attaching a link to an excel workbook for your better understanding.
Column B contains random time values
Column G to P represents houses and each house can have 1 car. So the each time values needs to be distributed in one column. Now when a car is plugged in, its load stays constant for 3 cells.
I want excel to randomly distribute these cars e.g. 4 cars to 4 houses and leave others blank.
what i can think of is, to assign each time a random house then use IF formula with AND function to match random times with time series and second condition to match random houses with columns 1-10.
the problem i am facing is, the formula gives a value error and only works in the rows with has random generated time in front of them screenshot. I know there is a very small thing that i am missing. please help me find it
Regards
workbook
=IF(ISNA(MATCH(G$5,$C$6:$C$9,FALSE)),"",IF(AND(INDEX($B$6:$B$9,MATCH(G$5,$C$6:$C$9,FALSE))>=$F6,INDEX($B$6:$B$9,MATCH(G$5,$C$6:$C$9,FALSE))<=$F6+TIME(0,30,0)),11,""))
The two elements in the AND find the house number in column C and return the corresponding time in column B.
The first element compares the time in F to that time. The second element compares the time + 30 minutes to F (three cells). If it's between those two times, it gets an 11.
The ISNA makes sure that the house in question is on the list. You could also use an IFERROR, but I prefer the precision of ISNA.
Update
If you want the values to wrap around, you need to OR compare to the next day.
=IF(ISNA(MATCH(G$5,$C$6:$C$9,FALSE)),"",IF(OR(AND(ROUND($F6,5)>=ROUND(INDEX($B$6:$B$9,MATCH(G$5,$C$6:$C$9,FALSE)),5),ROUND($F6,5)<=ROUND(INDEX($B$6:$B$9,MATCH(G$5,$C$6:$C$9,FALSE))+TIME(0,30,0),5)),AND(ROUND($F6+1,5)>=ROUND(INDEX($B$6:$B$9,MATCH(G$5,$C$6:$C$9,FALSE)),5),ROUND($F6+1,5)<=ROUND(INDEX($B$6:$B$9,MATCH(G$5,$C$6:$C$9,FALSE))+TIME(0,30,0),5))),11,""))
That formula structure looks like
=If(isna(),"",if(or(and(today,today),and(tomorrow,tomorrow)),11,"")
This formulas already getting too big. If you triple it for your three voltages, it will be huge. You should consider writing a UDF in VBA. It won't be as quick to calculate, but will probably be more maintainable.
If you want to stick with a formula, you could put the wattage in row 4 above the house number. Then in another table, list the wattages and minutes to charge. So in, say, B12:C14 you have
3.7 120
11 30
22 15
Now where you have 11 in your formula, you'd have G$4 and the two placed you have TIME(0,30,0), you'd have TIME(0,INDEX($C$12:$C$14,MATCH(G$4,$B$12:$B$14,FALSE)),0). I re-arranged some stuff to make it more 'readable' (but it's still pretty tough) and here's the final formula
=IF(ISNA(MATCH(G$5,$C$6:$C$9,FALSE)),"",IF(OR(AND(ROUND($F6,5)>=ROUND(INDEX($B$6:$B$9,MATCH(G$5,$C$6:$C$9,FALSE)),5),ROUND($F6,5)<=ROUND(INDEX($B$6:$B$9,MATCH(G$5,$C$6:$C$9,FALSE))+TIME(0,INDEX($C$12:$C$14,MATCH(G$4,$B$12:$B$14,FALSE)),0),5)),AND(ROUND($F6+1,5)>=ROUND(INDEX($B$6:$B$9,MATCH(G$5,$C$6:$C$9,FALSE)),5),ROUND($F6+1,5)<=ROUND(INDEX($B$6:$B$9,MATCH(G$5,$C$6:$C$9,FALSE))+TIME(0,INDEX($C$12:$C$14,MATCH(G$4,$B$12:$B$14,FALSE)),0),5))),G$4,""))
I have an excel table:
JobA .03445
JobB .01366
JobC .93271
JobD .6335
Plus 65,000 more.
What I need to do, is to create four equal buckets based on the values. where the sum of all Jobs in each bucket come as close to the other three buckets as possible.
Is there a way to do this in Excel?
Thanks
You can try this approach based on the incremental percentage. So you sum each incremental job until your sum reaches 25% of total values (that is BucketA), jobs from 25-50% will be "BucketB", 50-75% "BucketC", and rest will go into "BucketD". Sum of values in each bucket should be pretty close since you have 65k of values.
enter this formula
=IF(SUM($B$2:B2)/SUM($B$2:$B$100000)<0.25,"BucketA",IF(SUM($B$2:B2)/SUM($B$2:$B$100000)<0.5,"BucketB",IF(SUM($B$2:B2)/SUM($B$2:$B$100000)<0.75,"BucketC","BucketD")))
in cell C1 and drag it to the bottom.
There's lots of studies into algorithms that solve these types of problems. Your problem is actually the exact same format as the equal piles example in this article:
https://simple.wikipedia.org/wiki/P_versus_NP#Example
Considering the volume you're working with and the fairly narrow range of values, you could get a fairly good approximate solution by simply doing this:
Sort all items in descending order by value
In an adjacent column, put 1, 2, 3 and 4 against the first 4 values.
Use autofill to repeat that pattern against all values
You should now have 4 groups of fairly equal value
I have a data list in Excel, I am looking to take the top 3 values for each number, and get the average for those 3 values quickly. I often work with lists of up to 50,000 lines which at any one time could convert to over 10,000 different column A numbers.
I understand basic pivot tables to get an average after the top 3 values are collected, but need to find a way to remove all values that are not the top 3,
I trust this may be an extremely simple ask, or complex and thank you in advance for your help.
you can use =LARGE(Array, k) formula. For example, =LARGE(B:B, 1) is for 1-largest number, =LARGE(B:B, 2) is for 2-largest number etc.
If column contains many duplicates, and you want to get all occurences of top three values, use this formula to get all of them (put:
=IF(LARGE(B:B,ROW(A1))>=LARGE(B:B,COUNTIF(B:B,LARGE(B:B,COUNTIF(B:B,MAX(B:B))+1))+COUNTIF(B:B,MAX(B:B))+1),LARGE(B:B,ROW(A1)),"")
Working an a project with many more possible combinations and I'm not sure how to approach it, so I'm going to ask how to do it on a smaller scale and then apply it to a larger scale.
I have to buy 1 of product A and 1 of product B
They both come in 100 varieties at different prices.
For product A:
TABLE 1 (A1:B6)
Dollars-Versions
1-15
2-20
3-30
4-20
5-15
and Product B
TABLE 2 (C1:D6)
Dollars-Versions
1-40
2-30
3-20
4-5
5-5
I know the minimum I can spend is $2 (600 combinations) & the Max is $10 (75 combinations), and there are 10000 (100x100) total combinations
If I put the dollar values 2-10 in cells E2:E10, is there a formula to quickly determine the number of combinations for each net dollar value in cells F2:f10?
I imagine it would have to be done with an sumif array formula, but I can't start to figure out what it would be. If I had a small data set like this, I would make a crosstab, but my data set is too large to do it efficiently.
Thank you in advance!
You would need a formula like this:-
=SUM((A$2:A$6+TRANSPOSE(C$2:C$6)=F2)*B$2:B$6*TRANSPOSE(D$2:D$6))
which would have to be entered as an array formula using CtrlShiftEnter
It builds up a 2D array with ones at the elements where the corresponding cells in the two lists add up to the amount you have to spend, then multiplies it by the corresponding numbers of combinations.