[Bug] Profile Analysis Tool Segment break points position

[ecodiv]

Describe the bug When creating a profile with break points with the Profile Analysis Tool, I would expect the segment break points to be shown on the profile line. They are, however, positioned on the x=0 axis (see attached screenshot).

To Reproduce Steps to reproduce the behavior:

1. Open raster lay
2. Open the Profile Analysis Tool from the Map Display toolbar
3. Draw a profile line, including at least one breakpoint
4. See error

Expected behavior I would expect the segment break points to be shown on the profile line instead of all on the x=0 axis.

Screenshots

System description (please complete the following information):

• Operating System: Linux, Ubuntu 22.04
• GRASS GIS version 8.4.0dev, code revision 53c362dbd1

Additional context I have observed this behavior in earlier versions as well

[tmszi]

I wasn't successful with your reproducible example. All my line segments breaks triangle points lies on the profile line.

Tested with elevation raster map from the NC basic location.

[ecodiv]

@tmszi You are right. Using that data, it works as expected.

The difference is that in my example I used 'unprojected' data (WGS84, EPSG 4326). It seems the tool does not properly handle such data?

[tmszi]

@tmszi You are right. Using that data, it works as expected.

The difference is that in my example I used 'unprojected' data (WGS84, EPSG 4326). It seems the tool does not properly handle such data?

This will require a more detailed analysis.

[veroandreo]

I tested with a DEM in a 4326 location and I get the same behavior that @ecodiv describes, in NC sample data (i.e., a projected location) the breaks are on the profile curve.