Finally, our second visualization challenge comes to an end. We got a winner.
Background about Zoho Reports Visualization Challenge:
(skip this section if you know what I am going to say)
Back in November, 2009, I have asked the readers to come up with best possible ways to visualize a set of fictitious sales data. The objective is to make a dashboard (or chart) that would,
help a senior manager understand how the sales people have done in the 24 months. [more]
Readers from all corners of earth responded enthusiastically to this challenge and submitted 32 truly outstanding entries. I have compiled all of them in the sales dashboards post and asked you to vote for a winner.
And now we have winners.
Ladies & Gentlemen, the winner of this challenge is,
Option 4 submitted by Alex Kerin
Here is the winning sales dashboard:
click here for a bigger version
Alex Kerin – who writes at Data Driven Consulting, made this dashboard using MS Excel and Fabrice’s free sparklines add-in.
The dashboard clearly shows sales performance summaries at sales person level (a stated objective of this challenge), along with various key metrics. It follows key visualization principles, he used fewer colors, kept things as simple as possible and include headline messages.
Download Source Files: Link 1 | Link 2 | Link 3
Alex’s entry received 23 votes.
Congratulations Alex. You will receive an 8 GB iPod touch very soon.
The second prize goes to,
Option 7 submitted by Cuboo
Here is the dashboard:
click here for a bigger version
Cuboo – who writes at Open BI, made this dashboard using MS Excel & Palo. Cuboo is not new, he won the previous visualization challenge as well.
Download Source Files: Link 1
Cuboo’s entry received 22 votes.
Congratulations Cuboo. You will receive a copy of project management excel templates.
The third prize goes to,
Option 10 submitted by Esteban
Here is the dashboard:
click here for a bigger version
Esteban, made this dashboard using MS Excel.
Download Source Files: Link 1 | Link 2
Esteban’s entry received 15 votes.
Congratulations Esteban. You will receive a copy of project management excel templates.
Honorary Mentions
While there are several very good dashboards (and charts) submitted for this challenge, I *personally* liked these dashboards too.
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| (large) | (large) | (large) | (large) | (large) |
| Option 2 by Ajay | Option 5 by Arti | Option 11 by Hernan | Option 23 by Matt Cloves | Option 30 by Tessaes |
| Good colors, Layout | Interesting design, lots of dynamic stuff | Fewer charts, cool headlines | Rotatable panel chart!!! | Fewer colors, data tables |
| (details) | (details) | (details) | (details) | (details) |
Thanks to Zoho – the contest sponsor
Thanks to Zoho Reports and @aravind for pro-actively approaching me and sponsoring this contest.
Thanks to all the participants and voters
Thanks everyone for your support, participation and enthusiasm. You have made this contest a memorable experience for me as well as countless PHD readers. Thank you.
8 Responses to “Pivot Tables from large data-sets – 5 examples”
Do you have links to any sites that can provide free, large, test data sets. Both large in diversity and large in total number of rows.
Good question Ron. I suggest checking out kaggle.com, data.world or create your own with randbetween(). You can also get a complex business data-set from Microsoft Power BI website. It is contoso retail data.
Hi Chandoo,
I work with large data sets all the time (80-200MB files with 100Ks of rows and 20-40 columns) and I've taken a few steps to reduce the size (20-60MB) so they can better shared and work more quickly. These steps include: creating custom calculations in the pivot instead of having additional data columns, deleting the data tab and saving as an xlsb. I've even tried indexmatch instead of vlookup--although I'm not sure that saved much. Are there any other tricks to further reduce the file size? thanks, Steve
Hi Steve,
Good tips on how to reduce the file size and / or process time. Another thing I would definitely try is to use Data Model to load the data rather than keep it in the file. You would be,
1. connect to source data file thru Power Query
2. filter away any columns / rows that are not needed
3. load the data to model
4. make pivots from it
This would reduce the file size while providing all the answers you need.
Give it a try. See this video for some help - https://www.youtube.com/watch?v=5u7bpysO3FQ
Normally when Excel processes data it utilizes all four cores on a processor. Is it true that Excel reduces to only using two cores When calculating tables? Same issue if there were two cores present, it would reduce to one in a table?
I ask because, I have personally noticed when i use tables the data is much slower than if I would have filtered it. I like tables for obvious reasons when working with datasets. Is this true.
John:
I don't know if it is true that Excel Table processing only uses 2 threads/cores, but it is entirely possible. The program has to be enabled to handle multiple parallel threads. Excel Lists/Tables were added long ago, at a time when 2 processes was a reasonable upper limit. And, it could be that there simply is no way to program table processing to use more than 2 threads at a time...
When I've got a large data set, I will set my Excel priority to High thru Task Manager to allow it to use more available processing. Never use RealTime priority or you're completely locked up until Excel finishes.
That is a good tip Jen...