Set Operations
Unions, intersection, set membership
Set operations compare the elements in two sets to find commonalities or differences. In MATLAB®, the sets are arrays of numbers, dates, times, or text data. Most set operations compare sets for exact equality, which can be problematic in the context of floating-point arithmetic. For that reason, theismembertol
and大学quetol
functions are also available to perform comparisons with a tolerance.
Funzioni
intersect |
Set intersection of two arrays |
ismember |
Array elements that are members of set array |
setdiff |
Set difference of two arrays |
setxor |
Set exclusive OR of two arrays |
大学on |
Set union of two arrays |
大学que |
Unique values in array |
ismembertol |
Members of set within tolerance |
大学quetol |
Unique values within tolerance |
join |
Combine two tables or timetables by rows using key variables |
innerjoin |
Inner join between two tables or timetables |
outerjoin |
Outer join between two tables or timetables |
Argomenti
- Average Similar Data Points Using a Tolerance
This example shows how to average a group of points that are within tolerance. This approach produces a reduced data set that still holds the general shape of the original data.
- Group Scattered Data Using a Tolerance
This example shows how to group scattered data points based on their proximity to points of interest.