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Fixes to the RViz-Marker-Display-types tutorial. #4875

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clalancette merged 1 commit into from
Nov 26, 2024
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Fixes to the RViz-Marker-Display-types tutorial. #4875

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8 changes: 4 additions & 4 deletions source/Tutorials/Intermediate/RViz/Marker-Display-types/Marker-Display-types.rst
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Expand Up @@ -80,7 +80,7 @@ There is also a `visualization_msgs/msg/MarkerArray <https://github.com/ros2/com
2 Message Parameters
^^^^^^^^^^^^^^^^^^^^

The Marker message type is defined in `ROS 2 Common Interfaces <https://github.com/ros2/common_interfaces/tree/{DISTRO}/visualization_msgs/msg>_` package.
The Marker message type is defined in `ROS 2 Common Interfaces <https://github.com/ros2/common_interfaces/tree/{DISTRO}/visualization_msgs/msg>`_ package.
The messages in this package include comments that are helpful in understanding each of the fields in the message.

* ``ns``:
Expand Down Expand Up @@ -109,17 +109,17 @@ The messages in this package include comments that are helpful in understanding

* ``color``:

Color of the object, specified as r/g/b/a, with values in the range of [0, 1]. The, `a` or alpha value, denotes the opacity of the marker with 1 indicating opaque and 0 indicating completely transparent. The default value is 0, or completely transparent. **You must set the a value of your marker to a non-zero value or it will be transparent by default!**
Color of the object, specified as r/g/b/a, with values in the range of [0, 1]. The, ``a`` or alpha value, denotes the opacity of the marker with 1 indicating opaque and 0 indicating completely transparent. The default value is 0, or completely transparent. **You must set the a value of your marker to a non-zero value or it will be transparent by default!**

* ``points``:

Only used for markers of type ``Points``, ``Line strips``, and ``Line`` / ``Cube`` / ``Sphere`` -lists.
It's also used for the Arrow type, if you want to specify the arrow start and end points.
This entry represents a list of `geometry_msgs/Point` types for the center or each marker object you would like rendered.
This entry represents a list of ``geometry_msgs/Point`` types for the center or each marker object you would like rendered.

* ``colors``:

This field is only used for markers that use the points member. This field specifies per-vertex color r/g/b/ color (no alpha yet) for each entry in `points`.
This field is only used for markers that use the points member. This field specifies per-vertex color r/g/b/ color (no alpha yet) for each entry in ``points``.

* ``lifetime``:

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