Speed improvements of Unstack Columns

Version: 2020b

Type: Features

Category: Data Handling

Subcategory: Worksheet Data Manipulation

Jira: ORG-20579

Using multi-threaded for Unstack Columns calculation, so the speed should be much faster now.

For example, unstacks 4M points of data to about 2000 groups, the speed is about 6 times faster.