add st_hausdorffdistance

[sapienza88]

No description provided.

[zhangfengcdt]

Thanks for the contribution! Could you please clarify the use cases you want to support by adding this st function? Also,

1. The UDF needs to be registered in rust/sedona-functions/src/register.rs inside register_scalar_udfs — otherwise it's not callable from SQL.
2. GEOS-backed kernels in this project live in the c/sedona-geos crate (see c/sedona-geos/src/distance.rs) and use GeosExecutor. Could you move the implementation there and drop the new geos dep from rust/sedona-functions/Cargo.toml?

Also, please add the Apache license header to any new files.

[sapienza88]

@zhangfengcdt thanks for the comment, I want to first ask if g1.hausdorff_distance(&g2) would work?, is hausdorff_distance already defined?

[zhangfengcdt]

@zhangfengcdt thanks for the comment, I want to first ask if g1.hausdorff_distance(&g2) would work?, is hausdorff_distance already defined?

Yes, geos already support it - https://raw.githubusercontent.com/georust/geos/master/src/geometry.rs

You might want to check how this one works and follow the same pattern:
c/sedona-geos/src/distance.rs

[sapienza88]

@zhangfengcdt yet I cannot see the defining function, could you point out to the exact logic defining the hausdorff_distance?

[sapienza88]

@zhangfengcdt why the tests are in python while the implementation in rust?