Finding all Universal Combinations in an Occurrence Matrix

Hi mnty,

Can you share what you have so far?

The best way to do this is with a reprex (short for minimal reproducible example). :point_left: Take heed of the minimal part here. Even though this is going to involve 6,000 stores and 400 items in the end, it's best to start out small, and with "dummy" data that others can look at to. It'll take less time to iterate through versions (i.e. you'll fail fast), and help others help you if they don't have to import a large dataset.

Right now the best way to install reprex is:

# install.packages("devtools")

If you've never heard of a reprex before, you might want to start by reading the help page, and take a look at the reprex dos and don'ts.

For pointers specific to the community site, check out the reprex FAQ, linked to below.