Find what is missing, blank or NULL
From Gramps
Finding what is missing from the research in your Tree is difficult. There are endless possibilities.
This article is a cross-reference to testing methods for discovering specific gaps. But a lot of possible gaps are missing from the "See Also" list. That list will be expanded as new methods are discussed in the user support forums. Methods will be added to the Main section as 'best practices' are investigated and proven... and as time allows.
Custom Filter rules

Fig. .1 Define filter - dialog - default
<Count>
filter rules (look a number of instances value of 1, where Number must be "less than"
- People with <count> source
- People having <count> Notes
- People with <count> LDS events
- People with <count> addresses
- People with <count> associations
- People with <count> media
- Families with <count> source
- Families having <count> notes
- Families with <count> LDS events
- People with <count> media
- Families with a reference count of <count>
- Events with <count> source
- Place with <count> source
- Events having <count> notes
- Events with <count> media
- Events with a reference count of <count>
- Places having <count> notes
- Places with <count> media
- Places with a reference count of <count>
- Sources having <count> notes
- Sources with <count> media
- Sources with <count> Repository references
- Sources with a reference count of <count>
- Citations having <count> notes
- Citations with <count> media
- Citations with a reference count of <count>
- Repositories with a reference count of <count>
- Media with <count> source
- Media objects with a reference count of <count>
- Notes with a reference count of <count>
See also
- Find Families missing a parent
- Find Families missing both Parents
- Find Families missing both Parents but having multiple siblings
- How to find all events without a 'source' attachment"
- Places with no latitude or longitude given filter rule
- Filter on empty field (using Sort or Regular Expressions in Custom Filters)
- What's Next? built-in gramplet
- Verify the Data built-in Utilities tool
- Media Verify (find misplaced files for referenced Media objects)