About 6 months ago, Fred asked a question on the Chandoo.org Forums: I need idea on a simpler formula
In column A I have the total sum product of C to AU
Line one has all the names.
A2 = (B2*C2)+(D2*E2)+(F2*G2)+(H2*I2)+(J2*K2)+(L2*M2)+…+(AT2*AU2)
A3 = (B3*C3)+(D3*E3)+(F3*G3)+…+(AT3*AU3)
Is there is simpler way by line to do this without clicking each cell on line 2?
I tried Sumproduct but I think I have received a wrong answer during testing.
Hui offered a Sumproduct Formula as a solution
=SUMPRODUCT((B2:AT2) * MOD(COLUMN(B2:AT2) -1, 2), (C2:AU2) * MOD(COLUMN(C2:AU2), 2))
and then followed up with a simpler Sumproduct Formula a day later
=SUMPRODUCT(B2:AT2 * C2:AU2 * (MOD(COLUMN(B2:AT2), 2) =0))
Let’s take a look at this second solution.
Setup the Problem
Copy the numbers 10,20 into alternate Cells A2:U2 or download the example file here: Example File (Excel 97-2010)
Copy this formula into B6: =SUMPRODUCT(B2:U2 * C2:V2 * (MOD(COLUMN(B2:U2), 2)=0))
Pull The Formula Apart
Lets take a look inside this formula and see how it works.
=SUMPRODUCT(B2:U2*C2:V2*(MOD(COLUMN(B2:U2),2)=0))
We can see that in the above formula the main function used in the formula is a Sumproduct Function.
=SUMPRODUCT(B2:U2*C2:V2*(MOD(COLUMN(B2:U2),2)=0))
Within the Sumproduct function there are 3 arrays, which are multiplied together
Array 1: B2:U2
Array 2: C2:V2
Array 3: (MOD(COLUMN(B2:U2),2)=0)
What’s in these arrays?
Array 1 is simply the range from B2:U2
Array 2 is simply the range from C2:V2, note that it is offset from the first array by 1 Column.
This is so that the first value of the Second Array matches the first value of the First Array. That is they are both in position 1 within there respective arrays.
Array 3 is where all the action is.
Enter =(MOD(COLUMN(B2:U2),2)=0) into a cell and press F9
Excel returns: ={TRUE,FALSE,TRUE,FALSE,TRUE,FALSE,TRUE,FALSE,TRUE,FALSE,TRUE,FALSE,TRUE,FALSE,TRUE,FALSE,TRUE,FALSE,TRUE,FALSE}
Lets look at what is happening here
=(MOD(COLUMN(B2:U2),2)=0)
Mod returns the remainder of the first value Column(B2:U2) after dividing it by the second value 2.
Column(B2:U2) returns the Column Number for each cell in the Range B2:U2.
Because this part of the formula is in a Sumproduct formula it is evaluated as an Array Formula and hence it does this for each cell in the range B2:U2, thus returning an Array as the answer.
We can see that if we enter =MOD(COLUMN(B2:U2),2) into a cell and evaluate it with F9
={0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1}
However in this case we want to convert this from an array of Numbers to an array of True/False
A simple addition of an =0 does the trick
=(MOD(COLUMN(B2:U2),2)=0)
Now causes the formula to return: ={TRUE,FALSE,TRUE,FALSE,TRUE,FALSE,TRUE,FALSE,TRUE,FALSE,TRUE,FALSE,TRUE,FALSE,TRUE,FALSE,TRUE,FALSE,TRUE,FALSE}
So How does this go together with the other 2 arrays?
We now have 3 arrays:
Array 1: 10,20,10,20,10,20,10,20,10,20,10,20,10,20,10,20,10,20,10
Array 2: 20,10,20,10,20,10,20,10,20,10,20,10,20,10,20,10,20,10,20
Array 3: TRUE,FALSE,TRUE,FALSE,TRUE,FALSE,TRUE,FALSE,TRUE,FALSE,TRUE,FALSE,TRUE,FALSE,TRUE,FALSE,TRUE,FALSE,TRUE
When Multiplying arrays, Excel multiplies the first value of each array and then the second value of each array, etc, effectively doing
={10*20*True, 20*10*False , 10*20*True, 20*10*False , 10*20*True, 20*10*False , 10*20*True, 20*10*False , 10*20*True, 20*10*False , 10*20*True, 20*10*False , 10*20*True, 20*10*False , 10*20*True, 20*10*False , 10*20*True, 20*10*False , 10*20*True}
You can see above that when the 3 arrays are multiplied it will only be the Odd entries in Arrays 1 & 2 which are evaluated by the Sumproduct, as all the even entries are multiplied by False which is equivalent to Zero
So the above evaluates to
={200,0, 200,0, 200,0, 200,0, 200,0, 200,0, 200,0, 200,0, 200,0, 200}
Sumproduct then takes over and adds the values together returning, 2000, the correct answer.
Problem Extension
After solving the problem, Fred decided to add a column between each entry in the data set.
The solution is posted in the forum and is also shown in the example file.
You can work through that formula at your leisure, except to say that it is similar to the solution above.
Alternate Solution
Luke correctly pointed out that the data was poorly arranged and the solution would be much simpler had the data been more logically arranged.
However as an Excel practioner we are often called to solve other peoples dirty work.
HINTS
You will notice that in the solution of this problem I have done a few small things that make solving the problem easier.
Use Smaller Subsets of the Data.
Instead of putting numbers from Columns B to AU as Fred has I have used a set from Column B to U.
This way I can see all the data on one Excel screen without scrolling as well as the formula links and extents when pressing F2 on the cell containing the formula.
Use Simple Numbers
Use numbers that you can manually check. In this example I can easily, manually, check that the answer should be 2000.
Evaluate
Where ever possible, enter sections of a formula in a cell and evaluate its output:
=(MOD(COLUMN(B2:U2),2)=0) and press F9
={TRUE,FALSE,TRUE,FALSE,TRUE,FALSE,TRUE,FALSE,TRUE,FALSE,TRUE,FALSE,TRUE,FALSE,TRUE,FALSE,TRUE,FALSE,TRUE,FALSE}
See how easily we can check that this section is returning the correct values.
OTHER POSTS IN THIS SERIES:
You can learn more how to pull Excel Formulas apart in the following posts:
http://chandoo.org/wp/category/formula-forensics/
The link above, will show you all the posts in this series
WHAT FORMULAS WOULD YOU LIKE EXAMINED?
If you have any formulas you would like explained please feel free to leave a post here or send me an email:
If the formula is already on Chandoo.org or Chandoo.org/Forums, simply send the link to the post and a Comment number if appropriate.
If sending emails please attach an Excel file with the formula and data
24 Responses to “Free Excel Risk Map Template”
Why didn't you include the mitigation or risk IDs in the chart?
You can easily add such detail by modifying the TEXTJOIN function. Another way to use them is to add a slicer to highlight all risks that have a specific mitigation strategy or team member assigned to them. I left out those bits fto keep the article short.
I tried adding a slicer filter for the mitigation step but the TEXTJOIN is not affected by it. I added a helper column called "Visible" using the AGGREGATE function but I am unable to think of a method to pass that on to the map.
Could you please help, Chandoo?
Thanks
Never mind. I got it working. 🙂
Apologies, I didn't thank you for the file to begin with.
Great concept. thanks!
Awesome.. good to hear that Rajesh and of course you are welcome 🙂
Hello everyone,
Another amazing tutorial, great content and tips! My question is about slicers. How do you add slicers to this matrix? I've added 2 columns in my workbook table (Work Stream and Project Name) and I want to be able to filter (slice) the matrix on Project Name, but having some trouble with this. The slicer works fine in the data table, but how do I connect it to the risk matrix, so that only risk titles show up for the selected project?
Many thanks in advance for your guidance,
MyvJ
Can you create a sheet in live stock market data price change with profit and loss graph with time. which could indicate live profit and loss in each time frame 5minute, 10 minute, 15 minute, 30minute, hourly with some modifications
Hi
I've tried to get your formula to work, but likelihood / impact 1/1 does not seem to work.
Hi Chandoo
Awesome instructions! Thank you so much, this really helped me.
I was wondering if it would be possible to list the Risk ID number along with the Risk Title with a dash in between, rather than a bullet point? I have had a try at this but I keep getting a #VALUE error. I can see it's wrong but can't figure out what it should be instead. If you have time do you mind letting me know what I'm doing wrong?
{=" - " & TEXTJOIN(CHAR(10)&" - ",TRUE,
IF(RiskRegister[Likelihood]=$A17,IF(RiskRegister[Consequence]=F$3,CONCAT(RiskRegister[ID],RiskRegister[Risk Title]),""),""))}
Thank you!
Sally
Hey Sally, You are welcome.
I think the CONCAT inside TEXTJOIN is the culprit. Try this and hopefully you should see the ID too.
{=" - " & TEXTJOIN(CHAR(10)&" - ",TRUE,
IF(RiskRegister[Likelihood]=$A17,IF(RiskRegister[Consequence]=F$3,RiskRegister[ID]&RiskRegister[Risk Title],""),""))}
Hi Chandoo
You're a legend! Thank you so much! I had to make a minor tweak but otherwise it worked perfectly. Here is the tweaked version in case it helps anyone else:
=TEXTJOIN(CHAR(10),TRUE,
IF(RiskRegister[Likelihood]=$A8,IF(RiskRegister[Consequence]=C$3,RiskRegister[ID]&" - "&RiskRegister[Risk Title],""),""))
Thank you again!
Hi, Im not able to change the formula when trying to add risk Id instead of bullet point.
trying this: ="• "&TEXTJOIN(CHAR(10)&"• ";TRUE;IF(risks[Probability of Occurance *]=$C5;IF(risks[Severity of potential Impact *]=H$8;risks[Risk ID]&". "[Title *];"");""))
Cant see any solution on this.
thankful for help
Hi Chandoo,
This is perfect - One quick question, How can I add a hyperlink to the risks - So that I can click on the particular risk and it takes me to the actual row of that item.
Many thanks in advance.
HI Chandoo,
Is there a way to only display filtered item. Once the list gets big, it's hard to see all risk.
Kind regards,
SinYen
Hi Chandoo,
Quick question
1) Is there a way to remove duplicates within each risk block?
2) Is there a way to have the results in the chart update based on a filter or slicer?
Thanks a lot
Hi Chandoo,
The risk map is a brilliant tool, and I wanted to the risk map to only show Open risks. How can I do that?
Just found this today as I am making a risk matrix as well. I got the formula to work with this, where a risk score is above 30. Risk score = probability*impact*modifier.
So this works flawlessly, ="- "&TEXTJOIN(CHAR(10)&"- ",TRUE,IF('Risk tracker'!G4:G27>=30,IF(Table1[Urgency]="Now",'Risk tracker'!A4:A27,""),""))
I am trying to find a range now. Risk score in between 21-29. I tried using the AND function, but I couldnt get it to work. Is there anyway to get this formula to work with a range as mentioned above?
Thanks Eric.
You can't use AND() as it is not able to return arrays. You can try below formula.
="- "&TEXTJOIN(CHAR(10)&"- ",TRUE,IF(('Risk tracker'!G4:G27>=21)*('Risk tracker'!G4:G27<=29),IF(Table1[Urgency]="Now",'Risk tracker'!A4:A27,""),""))
Hello, this template is nice, thank you but im facing a problem when I need to find a range of impact. I cant figure out how..
My actual form is "="• "&TEXTJOIN(CHAR(10)&"• ";TRUE;IF(Table1[Impact]=A8;Table1[Title];"");"")"
Where A8 is number "1" so this formula finds everything with impact 1 and shows the titles.
What I need to get is a range so,
A8 is "1" and A9 is "2" and I need the formula to find all titles which impact is between 1 and 2.
I tried the AND function and so on, nothing worked..
Can you help me please?
i tried everything in your video in the end i only get the bullet... please guide me through
Sorted it... i was flash filling the other cells and it took other columns...
i do have another question though... how can i use slicers to filter the content of the matrix, so that it'll show only the departments i select?
slicer is working fine with the table, but the matrix still shows all the results
Just want to thank you for this.
It is awesome.
Hello everyone,
I think I accidentally nested my question in another thread. Apologies!
This is another amazing Excel tutorial, with great content and tips! My question is about slicers. How do you add slicers to this matrix? I've added 2 columns in my workbook table (Work Stream and Project Name) and I want to be able to filter (slice) the matrix on Project Name, but having some trouble with this. The slicer works fine for the data table, but how do I connect it to the risk matrix, so that only risk titles show up for the selected project?
Many thanks in advance for your guidance,
MyvJ
This is another amazing Excel tutorial! My question is about slicers. How do you add slicers to this matrix? Please advise