The Primary Dimension Control is located at the top left of the Analysis Screen. It is labelled 'By understanding'.
What is a dimension?
A 'dimension' in Ipiphany is the method of classification that you are choosing to group records by. For example, if you choose a dimension of 'Country' then Ipiphany will return records grouped by the names of countries.
There are 3 main types of dimension:
Structured attributes are category type attributes in your dataset (e.g. Airline, Country, Cabin Class, etc). They must be imported with your dataset. The special attribute 'Segments' is a combination of all structured attributes.
Unstructured attributes are created by Ipiphany when it processes your Verbatim Text Fields. These attributes are: Concepts, Broad Themes, Themes, Keywords, and Word Associations.
Concepts are categories from the 'Domain Knowledge' you selected when creating the dataset
Broad Themes & Themes are dynamically created categories based on "semantic theme clusters"
Keywords & Word Associations are simple categories based on the presence of a single word (keywords) or a combination of two words (word associations)
Analyses are lists of insights that you (or another Ipiphany user) has discovered.
How do I change dimension?
Click on Concepts to toggle to 'Concepts' or click the down arrow to display the dimension dialog window. Selecting a dimension in this way will save it to the second spot of the dimension control so you can quickly toggle between concepts and the new dimension.