# Create Intervals
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### Automatic Intervals
Using the **AutoSplit Trajectories** tool, the user can specify parameters related to flight velocity, angular velocity and minimum interval duration to automatically remove turns and split the trajectory into straight-line processing intervals, sometimes referred to as flight lines:
Intervals will be depicted in magenta in the main view:
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Note: With the **AutoSplit Trajectories** window open, you can reconfigure parameters and click "Compute" to recompute intervals.
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The interval list will be visible in the project tree, located under [**Intervals**](https://docs.phoenixlidar.com/spatialexplorer-8-and-9/user-interface/windows/project/intervals). Here, multiple lists of intervals can be stored (e.g., one list of intervals for sensor calibration and another interval list for data production):
An interval list
For more information regarding modifying interval lists, merging intervals, or creating intervals manually, see [**Project->Intervals**](https://docs.phoenixlidar.com/spatialexplorer-8-and-9/user-interface/windows/project/intervals).
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