In the past here at Chandoo.org and at many many other sites, people have asked the question “How can I display a number Multiplied or Divided by 10, 100, 1000, 1000000 etc, but still have the cell maintain the original number for use in subsequent calculations“.
Typically the answer has been limited to “It can’t be done” or “It can only be done in multiples of 1000”.
Well thanks to a tip I picked up from Kyle who responded to a post here at Chandoo.org they are all wrong.
It is possible to Multiply or Divide any cell contents by any power of 10 using Custom Number Formats !
That is:
How does this work:
When using custom number format we have two possibilities to modify the display number
- Use a Comma to divide by 1000; or
- Use a % to Multiply by 100
So using a combination of these any power of 10 can be obtained.
So using the correct combination of , and % can result in any power of 10 multiplier we require.
The problem is that using a % adds a % to the number!
The trick which Kyle added is that adding a Ctrl J to the Custom Number format allows us to hide the % signs on a second row of text, then by adjusting the cell to have word wrap and adjusting the row height the second row is not visible.
The Ctrl J must be added after the ,’s and before the %’s
So using the examples above the table is:
The Ctrl J adds a Carriage Return, chr(10), to the Format String.
Finally after applying the Custom Number Format the Cell must be edited to enable Word Wrap.
Select the Cells with the custom Formats, Ctrl 1, Alignment
You can see the hidden % symbols if you increase the Row Height.
Combination with Regular Custom Formats
These Custom Number Formats can of course still be combined with regular Custom Number Formats, just make sure that the Ctrl J is inserted before the % signs:
No Loss of the Cells Value
It is also worth noting that the original number is still maintained internally in the cell and that cells dependent on the cells don’t have to adjust for the display value.
Multi Line Formats
By extension we can now use this technique to add multiple Lines of Text to a Custom Number Format
Downloads
You can download a file containing all the above example here: Download Here
Other Links to Custom Number Formats
Here:
http://chandoo.org/wp/2008/02/25/custom-cell-formatting-in-excel-few-tips-tricks/
http://chandoo.org/wp/2011/11/02/a-technique-to-quickly-develop-custom-number-formats/
http://chandoo.org/wp/2011/08/19/selective-chart-axis-formating/
http://chandoo.org/wp/2011/08/22/custom-chart-axis-formating-part-2/
http://chandoo.org/wp/tag/custom-cell-formatting/
Elsewhere
http://www.ozgrid.com/Excel/CustomFormats.htm
http://peltiertech.com/Excel/NumberFormats.html
Thanx
Just a quick final Thank You to Kyle for highlighting this Custom Number Format feature/trick last week
I look forward to your comments below:
15 Responses to “A Gantt Chart Alternative – Gantt Box Chart”
That's a great idea.
Maybe the planned End Date should be highlight more.
I don't know how it would look like (nor how to do it yet), but what if instead of finishing the bold line to the best case End Date, it finishes to the realistic End Date?
The idea is ok, I think other project management tools have this, already? Maybe not.
Gantt charts in my view are about the signal most unless thing in the world, theres no way you can look at one thats more that a little complex and understand what it's telling you. I'm going to write a diatribe on project management at some point, its one of my pet areas I think!! 😉
The issue I have with this chart Chandoo, is that Tasks need to be linked to each other, so they should inherit the uncertainty, which would mean the as you moved down chart the lines would be miles apart for later tasks, and you might have to add lots of lines for subsequent tasks to cover the various outcome of it's parents.
Having said that, for the high level board summary, it's a nice way to go, it it appeals to the management 😉
thanks Chandoo, great post.
Ross
Whoooa !!! That's a very clever idea Chandoo. I really love it.
I think i'll update my gantt project sheet with that idea soon (remember my template ?)
@ross : you can link start date to the end date of the previous task in your data. The only problem I still se is to which end date (real ? planned ? best ?) in order to have average amount of information.
If best end date, you'll tend to increase uncertainty at the end of chain, although if you link to real end date, uncertainty will be decreased too much, leading in both cases to wrong management direction.
Maybe planned till the task is finished then real will do the job ?
Hey chandoo, this looks good and this would definite add value in production planning / scheduling. Uncertainity in finishing a task is very high in production scheduling and this could give an insight or a bird eye view of possible shipments we can have....
I've always been frustrated by the limitations of gantt charts. Will definitely use this, I've always struggled with how to succinctly communicate the uncertainty of certain tasks without confusing stakeholders.
I like this, I think it's a very effective way of showing how a timeline can change and which parts of a project need close attention.
@Cyril / @Ross: I would intially link the the start date to the planned end date of the previous task, with the chart updating when a task has been completed to reflect the true end date.
Or what about giving a drop-down selection box to allow the user to see the chart based on planned/best-case/worst-case end dates?
Like the idea. Have found that Excel is more flexible than MS Project for graphical solutions. The "Best Case"\"Worst Case" metrics are theoretically appealing but once the project and\or phase commences their reliability diminishes. A chart like the above that showed Planned Start, Planned End, Replan End Start, Replan End Date, Number of Replans the Start and End Dates, and Actual would provide an active, actionable view of each task\phase. It would also highlight the areas which are riskiest.
It is always amazing how flexible excel can be.
My question is how would the chart show a scenario where the date moved up? If a task is dropped or the duration of the task is significantly reduced by applying more people or machinery to the task, the dates will move up.
The gantt chart has been around for a long time, but it is still quite useful to show progress.
Cheers,
B
I like the idea but seems bit complicated in case of long projects involving numerous activity.
Also, reading and explaining is required hence not feasible where plans are just send to audience for approval.
Cheers
SY
Great idea Chandoo,
When I was reading this idea regarding delivery dates, another thought popped into my mind, how can you show the uncertainty with MONEY!!
In this case, applies to cost management or even a normal budget, you think?
Would Box Chart and Gannt Chart help to understand the best case, middle case and worst case when money is spend or planned with these three risks are involved?
I imagine that this chart could help people who write their budgets get a better understanding of risks affecting their spending.
Peter
Chandoo,
I like it. How would you display an entry once it has been completed (actual)?
Thank you,
Matt
From what you have shown so far I think that this box Gantt chart is awesome! I think that this could be an extremely useful tool.
I can't wait to learn how to make my own charts in Excel.
Will the methods that you are going to teach us work in 2003 as well?
[...] Firday, we proposed a new chart for showing project plans. I chose an ugly name for it and called it Gantt Box [...]
You need to read Eli Goldratt's Critical Chain. The uncertainty you are looking for should be accounted for in a project buffer. Not at each task level.
Further you should spend time understanding Agile Development. This would have you plan only in 1-3week iterations. This allows you to embrace changes to work not yet started, and for your customer to re-direct your course at regular intervals (after each iteration) throughout your project. keyword search: Agile Scrum
These items will show you that you are solving a tracking problem for something that you can entirely avoid!
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