# LandmarkEntry.msg

## Overview

`LandmarkEntry.msg` represents a single landmark observation. It pairs a landmark identifier with the pose of the tracking frame relative to the landmark, plus weights that control how strongly the observation influences optimization.

## Fields

| Field | Type | Description |
| --- | --- | --- |
| `id` | `string` | The unique identifier of the landmark. |
| `tracking_from_landmark_transform` | `geometry_msgs/Pose` | The pose of the tracking frame expressed in the landmark frame. |
| `translation_weight` | `float64` | The weight applied to the translation component of the observation in optimization. |
| `rotation_weight` | `float64` | The weight applied to the rotation component of the observation in optimization. |

## Usage

- Instances of this message are collected in the `landmarks` array of `LandmarkList.msg`.
- The translation and rotation weights are typically either `0.0` or `1.0`, enabling or disabling each constraint component, though intermediate values are permitted.