Vector map builder showing wrong lat/lon of the origin point of a custom map

[pedralmeida22]

Context

We are using the following mapping tool (LIO-SAM-ROS2-PIXKIT) to obtain our custom .pcd file.
From the logs, the origin point is: 40.634646,-8.659986

To create a new Lanelet2 map we are using the following Lanelet2 map builder tool: vector map builder.

Set MGRS

The MGRS is set from Lat/Lon of the origin point:

Move based on local point

When using the option "View -> Move to Specified Coordinates", the point (x=0,y=0) represents the lat/lot 39.74990751922,-9 ; very different from the origin lat/lon. (View image bellow)
When clicking "Move", it moves to the correct location on the map where the mapping started.

Move based on lat/lon

Moving based on the lat/lon goes to a point very far-off the mapped map:

Question

How can we link the origin point lat/lon to the local point to (x=0,y=0)? Or this is a bug in the vector map builder tool?

[woo-cie]

Hi @pedralmeida22.

From the screenshots, it appears to be an expected behavior.

First, the origin available for MGRS map projection is limited to those defined as MGRS 100km-grid. (For more information about MGRS, see here)
Also, the “Set MGRS from Lat/Lon” modal shows the MGRS grid containing the given latitude and longitude.

The TransverseMercator map projection is more suitable for your use. (See the links below for more information)
https://autowarefoundation.github.io/autoware.universe/main/map/autoware_map_projection_loader/#map-projector-info-file-specification
https://docs.web.auto/en/user-manuals/vector-map-builder/how-to-use/edit-maps#updatemapprojectorinfo-modal

[pedralmeida22]

Thank you for the quick reply @woo-cie. The TransverseMercator map projection does exactly what I was looking for.