Trust Peltier to come up with solutions for even the most impossible looking charts. Today he shares a marimekko chart tutorial.
What in the name of unindented VBA code is a Marimekko Chart ?
It is a variable width stacked chart. It is a good way to depict how various segments have performed wrt a set of products, essentially a market segmentation chart. See a sample chart that Jon created to the right.
I couldn’t sit still after seeing his post. So here comes market segmentation charts or marimekko charts using, <drum roll> conditional formatting.
See it for yourself, a market segmentation chart drawn in a 20×20 range of cells.
Here is a brief tutorial on how I created this. With little time and a strong coffee you can build a market segmentation chart too.
1. Adjust the data of your market segments and products
While Jon’s data (image) is oriented such that products are in columns and segments are in rows, I created the below structure as it directly maps to how the chart is drawn (segments in columns and products in rows)
I have derived the below table using formulas. It uses the number 20 (which is the size of one side of our conditional chart) and some rudimentary formulas to derive the numbers 0,8,14,18 from 40%,30%,20%,10% and so on. How ? Now would be the good time to take a sip of that strong coffee and think hard looking out of the window.
2. Create a simple 20X20 grid and start writing formulas
Ok, this is the tricky part. Ideally when the chart is ready we want to have 4 colored regions in each of the 4 segments (this can change if you have more products or more segments). Imagine you were to just write numbers in that grid such that for first product we write number “1” in each segment cells and second product, number “2” so on. Then, color all 1s, 2s, 3s and 4s differently using conditional formatting, then this is how it would look.
Now, we need to just figure out a simple formula that can automatically determine whether to output 1 or 2 or 3 or 4. ENTER THE STRONG COFFEE (or your favorite drink), slurp, slurp…
Ok, did you see those running numbers in the first column and row ? Good, We need to use those numbers to figure out certain things for us.
I have written the following formula in first cell in the 20×20 grid and copy pasted it all over the range.
=CHOOSE(MATCH(I$4,$C$13:$F$13,1), MATCH($H24,$C$14:$C$17,1), MATCH($H24,$D$14:$D$17,1), MATCH($H24,$E$14:$E$17,1), MATCH($H24,$F$14:$F$17,1))
What is it doing ? It is checking which segment the current cell belongs to by matching the top-row number with derived table’s first row (0,8,14,18). So for cell 1 this would be 1, for cell 12 this would be 3. Then, CHOOSE formula uses this information to determine which MATCH formula to run, there are 4 match formulas, each for one segment. All of them check the first-column running number with product-wise start numbers derived in the table 2 above. Slightly lost? Well, me too. Sip once more and read from beginning until it makes some sense.
3. Finally, apply the conditional formatting
Ok, now select the 20×20 grid and apply conditional formatting. Since I have created this in Excel 2007, I could define 4 rules, one for each number. But You can do similar using Excel 2003 (just define 3 rules, one for each number and apply 4th color to the entire range)
Also, hide the cell contents in the 20×20 grid by applying custom format code like this.
Thats all, you are now all set to show off your market segment chart. Go flaunt.
Download the market segment charts template and play around. [Excel 2007 File]
15 Responses to “Modeling Interest During Construction (IDC) – Excel Project Finance”
Thanks again for a very helpful post.
I had a similar problem when trying to model a balance sheet and profit and loss projection. The problem was that interest expense (in P&L) was dependent on a cash shortfall (in BS) which had to be funded. The cash shortfall depended on how much interest was paid, so the mutual dependency made a circular reference.
I addressed it with a macro that calculated interest outside of the P&L, then pasted the calculated amount into the P&L as a value. The model was out of balance, but by repeating the pasting and calculating loop the imbalance reduced to zero. It was a bit messy, and had to be repeated every time a line changed - but it worked.
If I have to do it again I'll read this article again first and see if it can be done more elegantly.
Hi,
The use of a circular reference can be avoided in this case. Just make use of the geometric sum to calculate the interest required. I’ll walk through the example from the spreadsheet.
First calculate the cash needed each year without the interest expense. So you year 1 you need 55 Mn, year 2 105 Mn, and 190 Mn for year 3. The total amount to borrow for year 1 is then (50 Mn)/(1-interest_rate) = (50)/(1-0.1). For years 2 and subsequent the amount borrowed is the cash needed in that year plus the interest_rate times the amount already borrowed. For year 2 (105 + interest_rate * sum(previous debt raised))/(1-interest_rate)=(105+0.1*61.1)/(1-0.1).
This process avoids the need for a circular reference, and makes the calculation more stable.
Thanks,
Tristan
The question is for the year 1 in your case, the amount works out to 45 mn. However in the year 2 you have applied the loan amount as 61.1 mn.
Am I missing something ! Please help !
very helpful information!!!
using circular references and to make model more stable we can use combination of "IF" and "ISERROR" functions. i.e
=if(iserror(formula1),"",(formula1))
this formula will return blank value if there is any error otherwise give the result required.
I usually use this in my models and it makes them very stable......
🙂 🙂 🙂
@Terry: Thats right. Exactly same problem is seen in Interest - Cash cycle in P&L and Cash Flow statement as well. In our trainings on financial modeling in excel, we demonstrate using both the circular loops as well as the macros to take care of this problem. Circular loops have their own pitfalls. If the model enters into a state of error, the error percolates!
@Tristan: Thanks for pointing out. I agree with you that if circular loops can be avoided, they should be avoided.
@Yogesh: This is one way of avoiding the problem. Although circular loops have another problem that they make your sheet slower. Each time, there is a change in the sheet, all the calculations are redone. So if they can be avoided, they should be avoided.
Please note that this was an example (a large one indeed) and I didn't have space to speak about the pitfalls of this approach! I just wanted to illustrate an approach and am glad that some of you found it useful!
I think while posting, there is an error in the images! The last image should be flipped with the one that is posted in step VII!
I think you can try the following simple solution given by Microsoft itself to make the circular works:
Windows: Excel Options -> Formulas -> Put a tick on "Enable iterative calculation"
Mac: Excel -> Preference -> Calculation ->Put a tick on "Limit iteration"
You can change the maximum number of calculation iterations as well as the maximum changes which iteration stops for goal seeking or for resolving circular references based on the number you type in the maximum change box.
Thank you.
Hey All
I heard that we can take care of the circularity with the help of macro for IDC. Can anybody help on the steps to construct the macro for the same.
Regards
Vinay
Hi Vinay,
If you look closely, you are essentially copying the values from the interest calculation to the IDC in project cost.
Basically you can record a macro, that takes the values from interest and pastes special the values in IDC row in project cost.
Then you can run that recorded code in a for loop.
Hope this helps.
Thanks Param for reply.
But before calculating interest, i need to provide for Upfront Equity and Equity, which are essentially part of total project cost. Hence, i need to put in Upfront Equity and Equity to calculate the IDC which is again hitting the total project cost.
Bit of confused on how to remove this circular reference.
Regards
Vinay
Wow, this was a brilliantly simple post. I was looking online for a while before I found this page. Never seen this been explained so beautifully yet so crisply before. Thanks for saving my ass at work! (i'm relatively new to finance + modeling)
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[…] Project Finance Modeling using Excel – Part 1 & Part 2 […]
I have been reading your blog since my college days. Today, I'm writing just to say thanks.
We have calculated Financial Rate of return of a hydropower projects, and the observer has raised an observation regarding Total Project cost with IDC Rs. 8616.01 million (PKR) and with-out IDC 8352.46 million (PKR). How does the Financial nalysis be calculated on the basis of with-out IDC Or With IDC?????
Please helpf. if possible to spare some time.