Box14.4
Index system searches in NUD*IST
Collation operators
- Intersect Finds all text units coded at all of the nominated nodes.
- Union Finds all text units coded at any of the nominated nodes. This is useful for merging nodes.
- Less Finds all text units coded at one node but not at a second one.
- Just one Finds all text units coded at just one of the nominated nodes.
- Overlap Finds all text units coded at two nominated nodes if one intersection.
Negation operator
- Not in Finds data not indexed at a node. Can be restricted to find data not coded at a nominated node in a subset of all the data.
Contextual operator
- At least Finds all text units coded at the nominated nodes in a section or a document if at least x nodes have references in that section or document.
- If inside Finds all text units for a node if the units fall inside units of another node.
- If outside Finds all text units for a node if the units enclose units of another node.
- Near Finds all text units coded at a node within a specified range of text units coded at another nominated node.
- Followed by Finds sequences where text coded at a nominate node is followed by text coded at a second nominated node.
Restrictive operators