# General

The General settings in SpatialExplorer allows for the configuration and customization of various parameters including Language, Units, and Visualization.

![SpatialExplorer General local settings interface](/files/-MBjfOB_TNPCgDjmlf4V)

## Language

At the time of writing, SpatialExplorer is available in the following languages: English and Chinese. Setting the Language to “Automatic” will use the default Windows Operating System language, with it defaulting to either English in most cases. Restarting SpatialExplorer is required if the language is changed for the settings to apply.

## Units

SpatialExplorer allows you to set the units for both distance and velocity. The available units of distance are shown in the following table:

| Abbreviation | Description   |
| ------------ | ------------- |
| m            | meters        |
| km           | kilometers    |
| ft           | feet          |
| sft          | square feet   |
| mi           | miles         |
| nm           | nautical mile |

The available units of velocity are shown in the following table:

| Abbreviation | Description         |
| ------------ | ------------------- |
| m/s          | meters per second   |
| km/h         | kilometers per hour |
| ft/s         | feet per second     |
| mph          | miles per hour      |
| kn           | knots               |

## LAS Output Coordinate System

When you add a trajectory file to SpatialExplorer, it will automatically determine the correct coordinate system. However, if you want to change the output coordinate system during playback you can do so from within SpatialExplorer by clicking the “...” radio button located to the right of the Output Coordinate System indicator.

From the Select Coordinate Reference System window, you can search for a Coordinate System or you can select a Coordinate System from the available list.

![SpatialExplorer Select Coordinate Reference System options](/files/-LTPX2-aSOtCKy18kmAH)

## Visualization

The Visualization section allows the user to customize the various parameters relating to the projection of point clouds and photos within the main viewing window.

KDefines the number of times each point in the cloud is sampled. A higher value produces a much smoother point cloud displayed at a slower rate.

| Value                         | Description                                                                                                                                                                                                                                                              |
| ----------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| Line Width                    | DESCRIPTION NOT AVAILABLE                                                                                                                                                                                                                                                |
| Maximum Point Cloud Size      | The maximum amount of points that will be displayed in the main viewing window. This does not affect the number of points captured during a real-time scan. The rover will always capture every point during a scan.                                                     |
| Update Point Cloud Batch Size | The number of points required for to update the point cloud in the main viewing window.                                                                                                                                                                                  |
| Photo Preview Pixelwidth      | The pixel width of each photo preview that will be displayed in the main viewing window.                                                                                                                                                                                 |
| Photo Preview Count           | The maximum amount of photo previews that will be displayed in the main viewing window.                                                                                                                                                                                  |
| Vehicle                       | Select a vehicle to display when replaying data. Allows the user to see the orientation of sensors/IMU/antenna on the vehicle based on the values used during acquisition. The user can also specify an offset of the vehicle to change it's relative position in space. |
| Colormap                      | Designate a color spectrum to display the point cloud. Allows the user to choose from a predefined color spectrum. The user can then specify the color range based on the selected spectrum.                                                                             |
| Pose Update Rate              | This option sets the rate (in Hz) at which the points in a point cloud are displayed. A lower value indicates a much faster rate; a higher value indicates a slower rate.                                                                                                |
| Projection                    | This option allows the user to choose either an Orthometric or Perspective view of the projection of the point cloud.                                                                                                                                                    |


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