findgroups

Find groups and return group numbers.

📝Syntax

G = findgroups(A)
[G, ID] = findgroups(A)
[G, ID1, ..., IDn] = findgroups(A1, ..., An)

📥Input Arguments

Parameter	Description
A, A1, ..., An	grouping variables with the same number of elements.

📤Output Arguments

Parameter	Description
G	group numbers; missing values map to NaN.
ID	the group identifiers, one output per grouping variable.

📄Description

G = findgroups(A) returns a vector of group numbers created from the grouping variable A.

Use G with splitapply to apply a function to each group.

💡Examples

[G, id] = findgroups([10; 20; 10; 30; 20])

🔗See Also

🕔Version History

Version	Description
2.0.0	initial version