Comparison diagrams

Comparison diagrams can show you what two items have in common and where they differ.

You can generate a comparison diagram to compare two of the same type of project items—for example, files, codes or cases—to see their similarities and differences.

For example, this diagram compares the cases Helen and Paul.

• Both Helen and Paul are coded to the codes Economy and Jobs and cost of living.
• Paul is coded to Infrastructure but Helen is not.
• Helen is coded to the code Real estate development but Paul is not.

You can change the type of associated items that are displayed on the diagram—for example, you might show child codes and hide memo links.

Comparison diagrams are not retained in your project when you close them or when you close NVivo. If you want to keep a particular diagram, you could export it as an image file which you could then insert into a document or memo. Alternatively, you could copy and paste it into another application—for example, into a Word document.

What can I use comparison diagrams for?

You can use comparison diagrams to see:

• Which files have been coded to particular codes.
• When two cases have talked about the same topic.
• What two project items have in common, and what is unique to each item.

Generate a comparison diagram

1. On the Explore tab, click Diagrams and then Compare Files, Compare Codes or Compare Cases.
2. Choose the two items you want to compare.