Here is a quick excel formula tip to start your week.
Use ROWS() and COLUMNS() formulas next time you need sequential numbers.
What does ROWS() excel formula do?
ROWS excel formula takes a range as an argument and tells you how many rows are there in that range. For. eg. ROWS(A1:A10) gives 10.
How can you use ROWS() formula to generate sequential numbers?
Simple. Assuming you want to have the sequential numbers in range B1:B10, in B1 write =ROWS($B$1:B1) and copy down the formula in the range in B1:B10. You will now have sequential numbers in that range.
But this is lame. I could just enter the numbers myself.
You are right. Using the ROWS () to just generate sequential numbers is lame.
But in most scenarios, we need sequential numbers to do something else (like passing them to an INDEX or OFFSET formula). Often we use helper column with the sequential numbers to do this. But by using ROWS() formula, you can remove the need for helper column and easily scale your formulas.
See this example:
Actual question on PHD forums: Fill down a formula with increment
Hi, I need help on filling a formula down with a constant increment. I would like the first cell to be ‘=+B1’ the next to be ‘=+B4’ the next to be ‘=+B7’ etc… so that the increment is 3. How can this be accomplished?
Actual answer using ROWS()
in Column C, write: =+offset($b$1,rows($C$1:C1)*3,0)) and copy down
There are lots of interesting uses for ROWS() formula.
Similarly, you can use COLUMNS() formula when your data is across columns.
PS: I just crossed my personal record for hard disk crashes in a week. Now my work laptop is on the bed too.
PPS: There are more than 100 posts on the PHD Forums already. Lots of interesting questions and answers to day to day excel problems.
PPPS: Posting will be thin this week. I have composed the next installment of project management and spreadcheats series during the weekend. But the posts are in the work laptop. So wait (and pray)
PPPPS: Have a fun week ahead. 🙂
9 Responses to “Show forecast values in a different color with this simple trick [charting]”
While this works in a pinch, it clearly "lightens" the colors of the entire chart. Depending on where you use this, it will be blatantly obvious that you don't know what you are doing and present a poor looking graph.
Why not separate the data into different segments when charting and have as many colors as you have data points? You might have to create a new legend and/or repeat the chart in "invisible ink", but it would be cleaner and more consistent when new or updated data becomes available.
While I think I agree that doing it "properly" via a second series is preferable, I don't necessarily agree that making the entirety of the "future" (data, gridlines, and even the axis) semi-transparent is "poor looking". I think it could be seen as adding more emphasis to the "future-ness" of the forecast data.
In short, it's another tool for the toolbox, even if it's never needed.
Simply and clever 🙂
Quick & effective, cool. thanks.
I always use the dummy series.
Nice little trick, thanks very much!
Two sets of data better. Control is much better.
You can use the same chart next month to see what is actual and what is forecast.
To use this trick, I think grid lines has to be removed, that will make the graphic much more sharp.
to be honest, i dont understand why there is needed to do this way... in this case horizontal lines will be pale as well. then why a just can't change the color of the line partly???
Great tutorial. Thanks for the tutorial!