Creating a dimension

- [Instructor] A dimension is an aspect of our data set.…And we have to create a dimension in crossfilter…before we can run most other commands.…Now notice that dimension here has a red dot…which means that we can run print filter…on the dimension even though it has child commands.…Now you can see that once we have created a dimension…we have a whole host of new commands available…to us including top to bottom, group, and filter.…Now to fully explain what a dimension is,…I've created a dashboard using the same data…that we're using in this course.…

And you can see the data is called facts.…So the variable name is the same and it's the same data,…still 12 rows of it.…I haven't included the turnip row of data, though,…in this one.…Now I've built this dashboard using DC…because as we now crossfilter only outputs data.…But because crossfilter is generally used to drive…graphical elements it seems sensible to show you…what the ultimate aim is when you're using crossfilter.…So the data is shown in the table over here,…