GeoLineStrings colors and radii only use the first value

[OisinMoran]

Describe the bug

The docs (and function signature) for GeoLineStrings indicate that it can take in multiple colors and radii, but only the first is ever used.

To Reproduce
Steps to reproduce the behavior:

Working code for GeoPoints

colors = [[255, 0, 0],[0, 255, 0],[0, 0, 255],[255, 0, 255]]
radii = [
        rr.Radius.ui_points(10.0),
        rr.Radius.ui_points(20.0),
        rr.Radius.ui_points(30.0),
        rr.Radius.ui_points(40.0)
]
rr.log(
        "world/map/test",
        rr.GeoPoints(lat_lon=[[0,0],[0,1],[1,1],[1,0]], colors=colors, radii=radii)
)

Non-working code for GeoLineStrings

colors = [[255, 0, 0],[0, 255, 0],[0, 0, 255],[255, 0, 255]]
radii = [
        rr.Radius.ui_points(10.0),
        rr.Radius.ui_points(20.0),
        rr.Radius.ui_points(30.0),
        rr.Radius.ui_points(40.0)
]
rr.log(
        "world/map/test",
        rr. GeoLineStrings(lat_lon=[[0,0],[0,1],[1,1],[1,0]], colors=colors, radii=radii)
)

Expected behavior

The line would interpolate between radii and colors of each point. If that is too tricky or not worth the effort, maybe just a pointer in the docs that while these args do accept arrays, they will only use the first item (for now at least).

Desktop (please complete the following information):

• OS: macOS Sequioa 15.6

Rerun version

rerun-cli 0.27.3 (base lance map_view nasm native_viewer oss_server re_server release_full release_no_web_viewer web_viewer) [rustc 1.88.0 (6b00bc388 2025-06-23), LLVM 20.1.5] aarch64-apple-darwin prepare-release-0.27.3 3bddb14, built 2025-12-08T15:26:25.859291Z
Video features: av1 default ffmpeg nasm serde

Additional context

[sectore]

If lat_lon in GeoLineStrings is a type of GeoLineStringArrayLike, it seems you need to nest positions to define more than one GeoLineString.

Instead of

lat_lon=[[0,0],[0,1],[1,1],[1,0]] 

try

lat_lon=[
    [[0,0],[0,1]],      # 1. `GeoLineString`
    [[0,1],[1,1]],      # 2. `GeoLineString`
    [[1,1],[1,0]],      # 3. `GeoLineString`
    [[1,0],[0,0]]       # 4. `GeoLineString`
]

to have something like this:

Just a guess, still needs to be confirmed by the team...

[IsseW]

Yes you're correct here @sectore

The current behavior here is the expected one, each color/radius passed is for one instance of a GeoLineString.

I can see this being confusing with each line string instance being multiple lat/lon, in comparison to the points where each instance being one lat/lon. Docs could be clarified a bit here.