# Trajectories

SpatialExplorer’s main viewing window can display different types of data simultaneously. The rover’s trajectory can be analyzed in the main viewing window once a trajectory file has been loaded.

![Navigation options in SpatialExplorer Work Offline mode](/files/-LT-csgmM-lHT0JClw19)

While viewing the trajectory in the main viewing window, you can pan by holding down the right-click mouse button, zoom in using the click wheel, and rotate by holding down the left-click mouse button. The color of the arrows indicate the beginning (green) and the end (red) of the mission. A gray section indicates an interval where no LiDAR data is available.

![Trajectory view in SpatialExplorer](/files/-LT-dEHzWwE38OVYiQz9)

## Trajectory Data Formats

SpatialExplorer requires that you load an initial trajectory file in order to process data into a .LAS/.LAZ. SpatialExplorer supports the following trajectory file formats.

|           |                                                                                                                                                                                                                                                                                                                            |
| --------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| .nav      | Unprocessed, low-rate real-time trajectory data computed during scanning.                                                                                                                                                                                                                                                  |
| .POF/.POQ | RIEGL’s post-processed high-rate trajectory data that contains absolute time. Manually exported from a NovAtel Inertial Explorer loosely-coupled or tightly-coupled trajectory.                                                                                                                                            |
| SBET.OUT  | SBET (Smoothed Best Estimate of a Trajectory) high-rate trajectory data. Manually exported from a loosely-coupled or tightly-coupled trajectory processed by NovAtel Inertial Explorer. Only contains Time-of-Week information, therefore the correct GPS week and time system have to be specified when opening the file. |
| .cls      | Combined Loosely-coupled Smoothed trajectory. Native high-rate post-processed trajectory created by NovAtel Inertial Explorer starting with version 8.70. Contains absolute time and does not lead to ambiguities as to which solution (loosely-coupled or tightly-coupled) the file was exported from.                    |
| .cts      | Combined Tightly-coupled Smoothed trajectory. Native high-rate post-processed trajectory created by NovAtel Inertial Explorer starting with version 8.70. Contains absolute time and does not lead to ambiguities as to which solution (loosely-coupled or tightly-coupled) the file was exported from.                    |


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