Of all the hundreds of formulas & thousands of features in Excel, INDEX() would rank somewhere in the top 5 for me. It is a versatile, powerful, simple & smart formula. Although it looks plain, it can make huge changes to the way you analyze data, calculate numbers and present them. It is so important that, whenever I teach (live or online), I usually dedicate 25% of teaching time to INDEX().
Today lets get cozy. Lets start a fling (a very long one). Lets do something that will make you smart, happy and relaxed.
Understanding INDEX formula
In simple terms, INDEX formula gives us value or the reference to a value from within a table or range.
While this may sound trivial, once you realize what INDEX can do, you would be madly in love with it.
Few sample uses of INDEX
1. Lets say you are the star fleet commander of planet zorg. And you are looking at a list of your fleet in Excel (even in other planets they use Excel to manage data). And you want to get the name of 8th item in the list.
INDEX to rescue. Write =INDEX(list, 8)
2. Now, you want to know the captain of this 8th ship, which is in 3rd column. You guessed right, again we can use INDEX,
=INDEX(list, 8,3)
Syntax of INDEX formula
INDEX has 2 syntaxes.
1. INDEX(range or table, row number, column number)
This will give you the value or reference from given range at given row & column numbers.
2. INDEX(range, row number, column number, area number)
This will give you the value or reference from specified area at given row & column numbers.
It may be difficult to understand how these work from the syntax definition. Read on and everything will be clear.
7 reasons why INDEX is an awesome companion
Whether you are in planet zorg managing dozens of star fleet or you are in planet earth managing a list of vendors, chances are you are wrestling everyday with data, pleasing a handful of managers (and clients), delivering like a rock star all while having fun. That is why you should partner with INDEX. It can make you look smart, resourceful and fast, without compromising your existing relationship with another human being.
Data used in these examples
For all these examples (except #6), we will use below data. It is in the table named sf.
Reason 1: Get nth item from a list
You already saw this in action. INDEX formula is great for getting nth item from a list of values. You simply write =INDEX(list, n)
Reason 2: Get the value at intersection of given row & column
Again, you saw this example. INDEX formula can take a table (or range) and give you the value at nth row, mth column. Like this =INDEX(table, n, m)
Reason 3: Get entire row or column from a table
For some reason you want to have the entire or column from a table. A good example is you are analyzing star fleet ages and you want to calculate average age of all ships.
You can write =AVERAGE(age column)
or you can also use INDEX to generate the age column for you. Assuming the fleet table is named sf and age is in column 7
write =AVERAGE(INDEX(sf, ,7))
Notice empty value for ROW number. When you pass empty or 0 value to either row or column, INDEX will return entire row or column.
Likewise, if you want an entire row, you can pass either empty or 0 value for column parameter.
Reason 4: Use it to lookup left
By now you know that VLOOKUP() cannot fetch values from columns to left. It does not matter if the person looking up is the star fleet commander.
But INDEX along with MATCH can fix this problem.
Lets say you want to know which ship has maximum capacity.
- First you find what is the maximum capacity =MAX(sf[Capacity (000s tons)])
- Then you find position of of this capacity in all values =MATCH(max_capacity, sf[Capacity (000s tons)],0)
- Now, extract the corresponding ship name =INDEX(sf[Ship Name], max_capacity_position)
Or in one line, the formula becomes
=INDEX(sf[Ship Name], MATCH( MAX(sf[Capacity (000s tons)]), sf[Capacity (000s tons)], 0))
For more tips read using INDEX + MATCH combination
Reason 5: Create dynamic ranges
So far, your reaction to INDEX’s prowess might be ‘meh!’. And that is understandable. You are of course star fleet commander and it is difficult to please you. But don’t break-up with INDEX yet.
You see, the true power of INDEX lies in its nature. While you may think INDEX is returning a value, the reality is, INDEX returns a reference to the cell containing value.
So this means, a formula like =INDEX(list, 8) looks like it is giving 8th value in list.
But it is really giving a reference to 8th cell.
Since the result of INDEX is a reference, we can use INDEX in any place where we need to have a reference.
Sounds confusing?
For example, to sum up a list of values in range A1:A10, we write =SUM(A1:A10)
Now, in that formula, both A1 and A10 are references.
Since INDEX gives a reference, we can replace either (or both) A1 & A10 with INDEX formula and it still works.
so =SUM(A1 : INDEX(A1:A50,10))
will give the same result as =SUM(A1:A10)
Although the INDEX route appears overly complicated, it has other applications.
Example 1: SUM of staff in first x ships
Lets say you want to sum up staff in first ‘x’ ships in the sf table.
Since ‘x’ changes from time to time, you want a dynamic range that starts from first ship and goes up to xth ship.
Assuming ‘x’ value is in cell M1 and first ship’s staff is in cell G3,
=SUM(G3:INDEX(sf[Staff count], M1))
will give the desired result.
Example 2: A named range that refers to all ship names in column A
Many times you do not know how much data you have. Even star fleet commanders are left in dark. Lets say you are building a new ship tracking spreadsheet. Since your fleet is ever growing, you do not want to constantly update all formulas to refer to correct ranges.
For example, the ship names are in column A, from A1 to An. And you want to create a named range that points to all ships so that you can use this name elsewhere.
If you define the lstShips =A1:A10, then after you add 11th ship, you must edit this name. And you hate repetitive work.
One solution is to use OFFSET formula to define the dynamic range,
like =OFFSET(A1, 0,0, COUNTA(A:A),1)
While this works ok, since OFFSET is volatile function, it will recalculate every time something changes in your workbook. Even when someone replaces a bolt on landing gear of USS Enterprise.
This will eventually make your workbook slow.
That is where INDEX comes.
You see, INDEX is a non-volatile function*.
So you can create lstShips that points to,
=A1: INDEX(A:A, COUNTA(A:A))
*Even though INDEX is non-volatile, since we are using it in defining a range reference, Excel recalculates the lstShips every time you open the file. (reference).
Reason 6: Get any 1 range from a list of ranges
INDEX has another powerful use. You can get any one range from many ranges using INDEX.
Since you are a successful, smart & resourceful star fleet commander, you got promoted. Now you manage fleet of several planets.
And you have similar ship detail tables for each planet in a workbook. And you want to calculate average age of any planet’s ships with just one formula.
Again INDEX to rescue.
Assuming you have 3 different tables – planet1, planet2, planet3
and selected planet number is in cell C1,
write =AVERAGE(INDEX((planet1,planet2,planet3),,,C1))
The reference (planet1,planet2,planet3) will point to all data and C1 will tell INDEX which planet’s data to use.
Pretty nifty eh?!?
Reason 7: INDEX can process arrays
INDEX can naturally process arrays of data (without entering CTRL+Shift+Enter).
For example you want to find out how much staff is in the ships whose captain’s name starts with “R”.
write =SUM(INDEX((LEFT(sf[Captain],1)=“r”)*(sf[Staff count]),0))
Although LEFT(sf[Captain],1)=”r” and sf[Staff count] produce arrays, since INDEX can process arrays automatically, the result comes without CTRL+Shift+Enter
Where as if you use SUM alone =SUM((LEFT(sf[Captain],1)=”r”)*(sf[Staff count])) you have to press CTRL+Shift+Enter to get correct results.
Other formulas: SUMPRODUCT & MATCH too can process arrays automatically.
Download Example Workbook & Get close with INDEX
Since you are going to ask, “I want to spend sometime alone with INDEX in my cubicle right now!”, I made an example workbook. It explains all these powerful uses of INDEX. Go ahead and download it.
Get busy with INDEX.
How to use INDEX in Excel – Video
In this video, learn how to use INDEX formula in Excel with many real-world examples. You can also watch it here.
Why do you love INDEX?
I love INDEX(). If we get a dog, I am going to call her INDEX.
Updated on Feb 2024: We did get a dog, but we call her Excel!
That is how much I love the formula. Almost all my dashboards, complex workbooks and anything that seems magical will have a fair dose of INDEX formulas.
What about you? Do you use INDEX formula often? What are the reasons you love it? Please share your tips, usages and ideas on INDEX using comments.
Learn more about INDEX & other such lovely things in Excel
If you are whistling uncontrollably after reading so far, you are in for a real treat. Check out below articles to become awesome.
- INDEX + MATCH Combination
- Introduction to SUMIFS formula
- Dynamic Array formulas in Excel (especially FILTER) is a good alternative to INDEX
- XLOOKUP formula can do much more than INDEX
- More examples of advanced Excel formulas & INDEX
33 Responses to “Show Months & Years in Charts without Cluttering”
Very CooOOOoool 🙂
Would it work if I merely change the display format for the dates, or do they actually need to be retyped in that format (Nov, Dec, etc)?
ps- it's only about 34 donuts per month, or slightly more than 1 per day. Yum!
To make it work automatically when you create a chart, delete the labels above the Year and Month columns, but keep the label above the Y data (Donuts). The blank cells tell Excel that the first row and first two columns (indicated by the blanks) are special, so it uses the first row for series names an the first two columns for X axis labels.
This is better than the other kind of donut chart, but you'll soon be carrying a big donut around your midsection.
First off, thank you Chandoo for being respectful and taking out the "Jesus" comment. Not that I'd threaten to kill you, or start world-wide riots, or make you go into hiding if you didn't (as OTHERS would; wink, wink, nudge, nudge)... I just really appreciate your respectulness and consideration; so thank you. I was meaning to write you about it, but when I came to your site you'd already made the edit... so again, thank you!
Secondly, I wanna say I think there's an easier way to do what you are demonstrating. I've got a pivot chart with months of data and all I had to do was right-click the x axis and then select "format axis", under "Axis Options" there's a check-box that says "Multi-level Category Labels". The chart I was able to do this on was a pivotchart however so maybe it wouldn't be that easy for a non-pivotchart.
Anyway, love the site. Keep up the good work. Thanks also for being so open about your success, it's very encouraging and motivating.
God (aka Jesus) Bless. 🙂
Hi Chandoo - great site! Another option to save space is to simply rotate the orientation of the text by 90 degrees, so the dates read vertical rather than horizontal. However, I like the elegance of your solution also.
Hey Chandoo -- Great tip. Only yesterday I was working through some strange behaviour with formatting dates in PivotCharts. Seems the axes never want to cooperate. This is a neat and elegant solution I hadn't thought of using. May need to abandon pivotcharts to use formulas like that, but if we use dynamic named ranges, no big sacrifice.
BTW, whatever did you do to get your site blocked in China? Never heard of regime change by a grass-root spreadsheet movement. Maybe your ISP is hosting some problem sites. Chandoo.org is certainly worth it for me to fire up the VPN, but I'm sure you would lose a lot of other visitors from the middle kingdom.
Chandoo ... pls help.. the link is blocked over here... pls can you put the regular link... 🙂
@JP... Excel Axis formatting is linked to cell formatting by default. So you can just have the dates which are formatted to look like months (mmm).
@Erin: It was not my intention to mock anyone's faith or religion. I just used the word as it is quite common. I decided to remove it as I got 2 emails from readers requesting for the same.
Also, the pivot charts take pivot table groupings by default, so you need not do any of the above while making charts from pivot tables.
@Kein: I am not sure why Chinese authorities decided to block my site. I wish they would actually look at the content instead of blocking sites based on simple text matching rules.
@Kapil: The file is mirrored here: http://chandoo.org/img/d/date-axis-months-years-trick.xls
Cool, really cool...
Nice one Chandoo,
Also would like to mention abt useful method while creating dynamic charts.
In any chart where in the months keep on adding - instead of changing the range for the chart every time we add a month, we can actually format the months as dates (probably 1st of every month) still keep the format as "mmm" AND while selecting the data, we can select a huge rows (date column) once and for all, and the chart adjusts automatically with the data that we entered. So next month when I enter Dec's data, I need not change the source data of the chart, however it automatically adjusts.
Hope I made sense.!
Regards,
SS
Thanks, Chandoo! This is a great tip - one that I will definitely put to use. I typically have an axis with mmm yy format, aligned vertically, but this will definitely look a bit cleaner (except in cases where the chart is too small for the axis labels to be displayed horizontally, even without the mmm yy on one line). Thanks again!
Tom
Chandoo,
Thank you for the posts you are very diligent not to mention very helpful. I would like to know how to get the separation lines on the axis? For example your candy sales chart has longer lines separating east and west how do you format that?
Thanks for being very awesome!
-Josh
Hi Chandoo, we can look the formulas because there is a message:"Unsupported features".
Could you send a diferent Link ?
Thanks.
@SS But what if you've got formulas in the data block (i.e where you would enter static data for the month of december)? My chart now shows #N/A #N/A in the axis with no data for all future dates.
Chandoo, I've got a dynamic range set up showing #N/A errors for future dates. The MMM-DD date format format in row works fine, but when I use YYYY and MMM in two rows, the axis shows #N/A #N/A for all future dates with no data. How would you go about keeping those future months hidden?
Matt -
In order for the axis to automatically extend to the dates within the range and ignore #N/A at the end, you need a date-scale axis, and for this you need to use one column with the complete date, not two columns with year and month.
If you want to use two columns, you need to generate Names in the worksheet which define ranges only as long as the number of months. I have a review of dynamic chart approaches in http://peltiertech.com/WordPress/dynamic-chart-review/ and a whole category on my blog at http://peltiertech.com/WordPress/category/dynamic-charts/. Chandoo also has examples of his own on this site.
How do you make a dynamic chart out of this?
I can't get the axis labels range right.
I tried something like this:
=OFFSET(REPORT!$H$10:$I$10;0;0;COUNTA(REPORT!$H$10:$I$100);1)
Any idea?
Ethan -
Your offset formula defines a range 1 row in size, but the technique here requires 2 rows. Your definition should end with
;2)
instead of
;1)
Thanks Jon,
Got it working now
Great! Now, is there any way to do this directly in Powerpoint? I don't like having linked excel files, so I create the graphs right inside Powerpoint, any way to do this there? I tried and was unsuccessful.
Thanks.
Cool tip Chandoo......thanks
[...] extract year and month from dates to avoid a mess in our stock chart. Chandoo has a great post: Show Months & Years in Charts without ClutteringIn cell B2:=YEAR(D2)In cell B3:=IF(YEAR(D3)=YEAR(D2), "", YEAR(D3))Cell C2:=IF(TEXT(D2, [...]
Hi there,
I have got a data ranging for 3 years. I want to show a chart which shows Jan of 2011, 2012 and 2013 together side by side; then Feb11, Feb12 and Feb13 side by side, then Mar11, Mar12 and Mar13, and so on until December.
Please help. Thanks.
@Bilal
Do you want a number of charts next to each other as separate charts or the data next to each other in a single chart?
What type of chart were you thinking about?
Can you post your data for us to review?
Refer upload instructions at: http://chandoo.org/forum/threads/posting-a-sample-workbook.451/
Hi there
Very good solution this. I have another question on it, though. How do you format the X-axis with monthly gaps (ie, with labels "Jan 2012", "Apr", "Jul", "Oct", "Jan 2013", "Mar", etc), when you're dealing with a data series with weekly or daily data points? The Axis Options dialogue box doesn't appear to offer "Date axis" as an option under the "Axis Type" section.
I've managed to do it in one case with weekly data by setting the interval between tick marks at 13 -- the approximate number of weeks in a quarter -- to get 3-month intervals. But this wouldn't work if I wanted to show 1-month intervals, or had a more detailed daily data series to work with.
Any luck getting the dates to work on a scatter graph? I'm only getting numbers. Works fine on line graphs though.
How can we do the vice versa? i.e. on the x-axis showing year on the level 1, and months on level 2.
I wanted to build these kind of axis labels for 5 years, with year on top and months at the bottom, but it should form in such a way that the seperating lines should seperate the entire data set only at December of each year, and no lines in between any month.
@Apoorve
Just re-arrange the columns
You need to put a space in all cells where you don't want a year
See the attached file
http://chandoo.org/wp/wp-content/uploads/2010/11/Chart-for-Apoorve.xlsx
Unfortunately you don't get any control over lines its all or nothing.
Hello - the link seems to be broken:
http://cid-b663e096d6c08c74.office.live.com/view.aspx/Public/date-axis-months-years-trick.xls
Regards.
Like!!
Three times already today I have used this website and saved a ton of work time in researching excel tricks.
Suggestion: Why not have a "like" or "this article was useful to me" button. That way you can see what is most useful by your users and maybe generate more content based on those "likes".
Just saying. Thanks again and you're doing a great job!
Thanks for the tip. However, I couldn't download your file. The link is broken.
Thank You for taking the time to post this tip. I hope that you have a blessed day.
The link does not work properly and I'm not sure how to actually get the graph to display like this, its frustrating me a tonne. I cant work out what to google either to find an answer elsewhere! 🙁
Is this possible with waterfall chart. Data hereunder -
Years Abbrevation Amt
2020 BEG 2,006
REV 1,950
EMP 1,058
DM (3,244)
OOE 1,078
OPMT 182
AB (638)
END 2,392
2021 REV 8,534
EMP 67
DM (2,142)
OOE (3,120)
OPMT 510
AB 1,008
END 7,249