# LandmarkList.msg

## Overview

`LandmarkList.msg` carries a timestamped collection of landmark observations. It is used to publish landmark data to Cartographer so that landmarks can be incorporated into the SLAM optimization.

## Fields

| Field | Type | Description |
| --- | --- | --- |
| `header` | `std_msgs/Header` | The standard ROS header with timestamp and frame information. |
| `landmarks` | `cartographer_ros_msgs/LandmarkEntry[]` | The array of landmark observations. |

## Usage

- The `header.stamp` should reflect the time at which the landmark observations were captured.
- Each element of `landmarks` follows the `LandmarkEntry.msg` layout.