Venn Diagram Card Type
A nicetohave would be a Venn Diagram cardtype, enabling visualization of some overlap between two otherwise distinct populations. Example: Sales Organization with National and Regional account coverage types. However, there are situations where Regional account managers have to call on local affiliates of a Nationalclassified account. Wind up with a National, Regional, and Hybrid (the overlap) subsets. By developing a dataset that has Natl, Regl, Hybrid as a distinct attribute, should be able to visualize the overlap between the two larger sets, and derive the percentage overlap.
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Comments

Thank you for your suggestion. This has been submitted to our engineering team through ticket # DOMO37798
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@Gavatar can you please take a look at this?
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Good idea. We will look at adding...
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Similiar need for many users at my company.I have several requests to look at the correlation of product purchases (cross selling) with customers. It would be great if a visualization option existed where the data could be easily portrayed. Right now I’m resorting to Powerpoint or Excel to build the visual based on data from Domo.
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Without a doubt, the need for Venn diagrams to represent overlap is a highly desired addition to the library. Is there a roadmap or expectation for DOMO to expand the visualization suite?
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We will be expanding the visual "suite" later this year.
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Great. Will it include a Venn?
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Venn diagram is not on the top of the list but on the list. As we look at this chart type do you have examples of what your data is that you would like to show in a Venn chart?
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Adding to this request. From a CRM perspective I'm interested in visualizing the overlap of buyer counts. I.e. some buyers only buy from apparel, some only from shoes and some have purchased from both. In the meantime, has anyone found an alternate way to visualize this in Domo?
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I was just about to post a request for Venn diagrams and saw this existing post. Yes, Venn diagrams would be helpful in some situations, like those listed above. We would like to use them for showing similarities between rosters, assemblies, and other collectiontype data. We can generate Jaccard Coefficient scores, etc., but really the same as a straightforward Venn diagram.
A few notes of acknowledgment:
* Yes, Venn diagrams are surprisingly hard to calculate correctly relative to most chart types with so little date.
* Yes, Venn diagrams are comically terrible with more than a few intersections. But for 23 or even 4, they're fantastic.
* Yes, by "Venn" I mean "Eular, including Venn". But, like everyone else, I use "Venn" for both.
Some nice features to have:
* Control over color and opacity (but please start with your usual good taste in colors! I pretty well always use Domo defaults.)
* Control over shape  there's no rule that Venns have to be drawn as circles, rectangles can be superior in some cases.
Thank you1 
Thanks for the additional detail. Do you have sample data formats for what you want to chart? We are looking at options for this chart type.
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Thanks for asking. For venn/euler diagrams, you need
 Size of each set in a common unit
 Size of each setpair interesection in the same unit
Being able to control color is nice, that's just an array parallel to the unique list of sets.
As far as the counts and the intersections go, Domo seems to usually prefer pairwise data in a few columns. But at the heart of it, a collection of simple set intersections is well expressed as a pivot:
Australia Canada Algeria Australia 783 137 69 Canada 137 827 243 Algeria 69 243 489
...but that only works for set:set comparisons, not multiple overlaps. I guess that you need a collection of identifiers that can handle n sets, to define the intersections. Here's what I mean:
Australia 783 Canada 827 Algeria 489 Australia,Algeria 69 Australia,Canada 137 Australia,Algeria,Canada 13 Algeria,Canada 243 That looks like enough data to sort out all three circles in my threecountry data set.
Yes, I just went to an online Venn generator that I like I like and here's a screenshot:
I found the site I used for the mockup back in 2016 when I was spending a stupid amount of time working on Venns in D3. The author's comments on algorithms for calculating Venns were pretty interesting:
http://www.benfrederickson.com/venndiagramswithd3.js/
I found his rendering algorithm to be fast and reliable. But with too many sets? The output ban be gibberish. But that's on the charter, not the chart.
More notes on Venns:
* Default to a nice color palette, as Domo always does...but give us an option.
* Options to display the set's name and value on the graph. So "Australia  783" for the "A" above. For the intersections, it would be nice to have the value shown.
* Quick filter! A quickfilter that lets you drop out sets and redraws the Venn accordingly would be fantastic.
* Legend options: Category and value.
Thanks!
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P.S. Euler  noninteresecting sets should still be graphable.
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I remembered one other key feature for Venn diagrams: Controlling plot order. If you're producing different Venn diagrams to compare different aspects of two groups, it's confusing when the sequence of the sets changes. For example, imagine that you're comparing Australia and Canada on a couple of different levels. I've done this on bird taxonomies at species, genera, and family level...but that's not a common business problem ? In my current case, we're all about parts, subassemblies and full assemblies within and across facilities. So, lots of lateral and horizontal comparisons. Anyway, if you set up a section with sidebyside cards (or if Domo implements support for "small multiples'/chart grids, the positioning of the cirlces matters. Here's a mockup of a confusing pairing of Venn diagrams:
Australia is on the left in the first diagram and on the right in the second. This is super confusing. There's no effecient way to compare the charts. The color and label in the mockup are right, but position is a much more powerful property than either of those. Here the two charts are changed so that Australia is always on the left and Canada is always on the right:
This makes the two charts a whole lot easier to draw useul information from. Pretend that the chart on the left is for a specific product line and the chart on the right is for all product lines in a catalog. You can see that in the specific product line chart on the left (say, "cookies/sweet biscuits" for a food company) that the two countries have product lines of similar size, but many unique items. On the right, you can see that Australia has a much smaller collection of procuts across all ranges. Sorry, my mockup numbers don't quite reflect that story  hopefully the idea is clear anyway. (I just drew circles in OmniGraffle, these aren't real charts of any kind.)
Note that it would also be nice to be able to draw Venns with rectangles. I know that circles/elipses are traditional, but rectangles are arguably easier to interpret. Plus, you could then use the rendering logic for other barlike chart types, like Pyramid charts.
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Forgot to say, sort order would seem like a logical hinting mechanism for the renderer to control plot position. So, sort by "country name" and they're drawn around your plot point based on alphabetical order, etc.
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Any status update on this? We have clients that buy into 1 to 4 different product lines. Would love to show the overlap. For example if they buy from product line A do they typical buy from C & D also.
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@Gavatar Domo team  do we have any updated on Venn daigram chart please
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