One of the most frequent tasks for any manager is “planning”, be it putting together a hiring schedule or designing a jumbo jet, it all starts with a simple project plan and gantt chart is simple and intuitive representation of the same. But how to make a gantt chart in excel without writing too many formulas or adding conditional formats? Do not worry! with the simple trick we are going to learn today, you will be able to “gantt in 60 seconds” 🙂
You dont have even 60 seconds, worry not, download the free gantt chart template and get your project plan ready in 6 seconds.
For our example purposes, we will look at a fictitious project plan shown below:
Even though you can use this trick to pretty much any data format, it works better when the project plan is structured around how I represented it above.
Now lets build a gantt chart in 60 seconds, get your stopwatches out and get, set …. GO!
1. Create a bar graph
Select the data part of your plan (ie all the cells except header row in the above table) and click on chart icon in excel. Select “bar chart” as chart type and “stacked bar 2d” as sub-type (2nd left on the top row) as shown here.
Click finish. At this point your gantt chart should look like this:
2. Transform your bar graph to gantt chart
Now we will convert this stacked bar graph to a gantt chart by using chart formatting options.
- First we will reverse the way data is charted, so that it looks like a gantt chart. For this we need to right click anywhere on the “y-axis” of the graph and select “format” option. Go to “scale” tab and check “Categories in reverse order” option.
Click ok, now out gantt chart should look like this:
btw, what is the time on that stop clock, 34 seconds, well, thats just fine, we have got plenty of time to spruce this up.
- Now, lets get rid of first data series so that our graph looks more like gantt chart. Select the first data series of your chart (should be in violet blue color 🙂 ), right click and go to “format data series” option.
Select “none” for “border” and “area” options in the “patterns” tab. This will make sure that the first series is invisible, so we see second data series floating on the chart, thus making it look almost like a gantt chart.
Go to “data labels” tab and check “category name” option. This will make sure our gantt chart will show labels (but on the now invisible first data series)
Click ok, at this point our gantt chart should look like this:
- Finally we will adjust labels and backgrounds to convert this to a perfect gantt chart
- First lets remove the legend box on the right by selecting it and hitting “del” key.
- Now, lets also remove the y-axis since labels are visible on data-series 1. Just click on the y-axis (or category axis) and hit “del” again.
- Lets adjust the alignment of the data labels on series 1 so that they are properly visible. Right-click on the data labels and select “format” option. Go to “alignment” tab in the dialog and select “Right” for horizontal alignment and “inside end” for label position. This will ensure that our data labels are right aligned and shown at the end of data series 1, ie closer to the actual series 2 (duration of the task). See the below screen cap for more help.
- Lets also remove the plot back ground to remove the annoying grey color from our gantt chart. Just click on the grey color anywhere and hit “del”. While we are at it, you can also change the line color of x-axis (the days) to white or transparent to reduce the eye sore.
- Finally, lets adjust the plot area size so that we can read all the data labels and everything looks normal.
At this point our gantt chart should look something like this:
If you still have few seconds left, you can tweak the chart format to make it look better. I had 3 more seconds left, so I tried this 🙂
Feel free to download the free gantt chart template and see how to create gantt charts using excel bar graphs.
Bonus tips for enthusiastic excel experimenters:
1. Adjust the grid line format to make them more subtle
2. Select a particular task’s data point and change its color to emphasize progress / stalled statuses
3. Enhance this to add another column with no. of resources (or difficulty etc.), add this to the stacked chart and make it invisible just like series 1, but show the data labels.
4. You get the picture… so start gantting… 😀
Also read:
Learn how to create project plans / gantt charts using conditional formatting
Create art grade excel charts with these 73 designer templates
Other uber cool excel tricks to make your colleagues zealous and your boss happy
42 Responses to “Prevent Duplicate Data Entry using Cell Validations”
Hi Chandoo, I need you help in the following problem.
I'm trying to get a direccion from a found result. With this dirreccion I will want the before cell value. For example, If result of a find is 38 localized in cell $C$2, I need to get previus value (cell $B$2 ), maybe Andrés.
Do you know some way to do that?
Thank you for you help.
Hi Chandoo
Thanks for this. One thing though: In my pre-2007 version of Excel, the COUNTIF function doesn't recognise a semicolon (;), but requires a comma.
Is the semicolon an Excel 2007 thing?
Jair... I am not sure I understand what you want. what do you mean by Dirreccion?
@Lincoln: I am sorry, often I forget that I am using European version of excel where the delimiter is ; instead of ,. I have corrected the formula now.
Thanks for this nice tip, i used to do a find all after filling every new items which was cumbersome.
Do you know a way to extend this validation search to other tabs/sheets ?
Thanks for you attention. I'm trying to get of value continue from a found value. Let me show a example:
Name Years
John 35
Maria 28
Teresa 32
If I search the max years, the result is 35, but I need that result to be John. Do you know how I can do it?
@Subbu.. you can easily extend the validation to other sheets by pasting the data validations. See the latest article here: http://chandoo.org/wp/2009/10/28/copy-data-validations/
@Jair.. you can use the large() or small() formulas to do this. for eg. =index(A1:A3,large(B1:B3,1)) will get you the name of the person with highest "years". More help here: http://chandoo.org/excel-formulas/large.html
Hi, I don't know if I'm using bad the formula or its performance is diferent for my Office version. Large() formula return the value in the cell, in my example 35. The index() formula use a range, row and column. I'm using the large() as number of row, and it is bad because into the range don't have row 35. This is my perception. What do you think?
Hi, I going to prove, with this solution by JLD http://jldexcelsp.blogspot.com/2008/07/extraer-direccion-de-celda-en-matriz.html
Hello,
I am trying to attempt data validation in Excel Mobile, but the DV tool isnt available. I want to prevent duplicates is all, any advice on acheiving this in Excel Mobile? Thanks..
@Jair... my french aint that good. it starts at "merci" and ends at "beau coup".
Anyhow, you need to merge the large with vlookup to do this. I am not sure if you have solved the problem. Otherwise let me know with details and I can write the formula in comments.
@Chad... I have never used excel mobile, so I have no idea. May be they have not implemented data validations in excel mobile.
Any excel mobile users out there?
Hi Chandoo, the proposed solution by JlD is interesting. He created a macro to get values when the matrix is not one dimensional, how on my problem. This fuction for me.
I would like to share you my work, how can I upload?
@Jair.. sorry for such a delayed reply.. you can upload the files to skydrive and link them here. Or you can email them to me at chandoo.d @ gmail.com and I will upload them somewhere. But it could take forever if you email files to me as I am a bit lazy.
[...] Day 31: Advanced Data Validation Tricks in Excel – Part 2 [...]
Hi,
Can you help me in Microstrategy?
Br,
Moin
really wonderful article. I feel it is implementing Primary Key concept into spreadsheets.
Hi article on data validation. Excel is a very versatile platform to work with and we use it for all kinds of data tabulation. In fact this must have been the most rudimentary data management tools I must have worked with and knowing such tips only adds functuionality to our user experience. Great article. looking forawrd to read more.
Hi Chandoo,
Thanks for such a nice idea.
I tried copy paste the data into the validated area, but the pop-up msg (warning msg) doesn't came. Is it something that we need to update the data manually each time,.
Do we have any option where we can bulk upload the number and it throws a warning message that the data already exits and do we want to continue with this ?
Please do reply me.
Thank you.
Regards,
Vasanth.
It was really useful chandoo...thanks a lot...
Tried this in excel 2010 and it did not work?
Could the newer excel have changed that much?
@Leo
It works fine in Excel 2010
The formula used above =COUNTIF($B$4:$B$11,B4)<=1
only applies to the range B4:B11
Did you adjust the range to your data?
This page helped me accurately to find solution of my question. thanx
we want to prevent duplicate entries in three columns combined, using data validation, i.e. say, column A has first name and Column B has middle name, Column C has last name. the first name can be duplicate, middle name can be duplicate, last name can be duplicate, but not all three at the same time.
I want to prevent duplicate entries in three columns combine, using data validation, i.e. say, column A has first name and Column B has middle name, Column C has last name. the first name can be duplicate, middle name can be duplicate, last name can be duplicate, but not all three at the same time.
Hi, I've tried above validation method to prevent duplicate value from entering into the cells. It's work, when user key in the data into the selected range. However, it's not working when user copy-&-paste the info into the same range.
Please advice. Thanks.
Hi Chandoo,
Does it work in Excel 2007?
Please Reply
thanks chandoo........
it does not work when data is copy pasted...any solution for this??
hi i m shaloo and i want to know in excel if i write duplicate no.then it says or show about we are write duplicate no.
Hi Chandoo
I've tried using this with a Named Range, which is actually a column in a Table as DV wont accept a table reference, and it wont work.
Also tried using Offset to specify the Named Range, but that wont work either.
Is it possible to use Named Ranges with DV?
Thanks
Kris
I have tried the above formula on a table column. The Error box does not pop up, there is only the small ! next to the cell with the duplicate. The column I am working with is formulas that produce a date. Is the reason it doesn't work that the cells contain formulas rather than data?
The formula works but only if I enter data in cell above it. So for example, if I have "123" in B11 it does not allow me to enter "123" in B10, B9, B8, etc. But I can still enter "123" in B12. Please help! 🙂
Great tip.. thanks a lot
I have 21 years of experience working as data entry assistant. I constantly read several blogs to keep myself up-to-date with the advances in data entry profession. I really enjoyed this blog post. From my several years of experience, I agree with you 100% when you say, “ We all know that data validation is a very useful feature in Excel. You can use data validation to create a drop-down list in a cell and limit the values user can enter. ”
Keep blogging. I will come here again.
--data entry assistant
Hi,
This is really very helpful.
Thank you
how can i assign two validation on a single cell
one is for list validation (means the data should be from that range)
second i want to prevent them from repetition
how can i do this ?
P7 to P506 have GR# which are for list
i want to prevent C column to not to repeat and should be from the P column
@Junaid
Can you please post the question in the Chandoo.org Forums
http://forum.chandoo.org/
You have to register to be able to post questions
Please attach a file so that a specific answer can be delivered.
i made an account but there is no option available to post questions ??
where can i ??
@Jubaid
Goto http://forum.chandoo.org/
Goto Ask an Excel Question
Post New thread
Type your question
Attach a file
Please attach a file so that a specific answer can be delivered.
friend can any one tell me the formula
exname location qty
gaurav 1 1
rofan 2 5
sandeep 3 6
gaurav 4 3
rofan 5 4
sandeep 6 8
gaurav 7 9
If this is a data.
if i want a formula by which if i type gaurav then all the location and qty should be shown in a new page.
i had 5,00,000 sku so if i punch one name i can get the entire details
@Gaurav
Can you please post the question at the Chandoo.org Forums
http://forum.chandoo.org/
Please attach a sample file for a quicker more targeted response
IF(ISERROR(INDEX($B$3:$C$9,SMALL(IF($B$3:$B$9=$B$12,ROW($B$3:$B$9)-ROW($C$2)),ROW(A1:C1)),2)),"",INDEX($B$3:$C$9,SMALL(IF($B$3:$B$9=$B$12,ROW($B$3:$B$9)-ROW($C$2)),ROW(A1:C1)),2))
please explain
YOUR COUNTIF FORMULA IS REALLY HELPFUL AND WORKS. I TRIED SEVERAL SITES BUT THEIR FORMULA DOES NOT WORK. ONLY YOU HAVE GIVEN A RIGHT FORMULA!
THANK YOU!!!!!