hydromodpy.core.io.crs

CRS helpers built on pyproj and rasterio.

Centralises coordinate transforms, UTM detection, and polygon-based filtering so downstream modules never have to reach into pyproj directly. The PROJ database bootstrap that used to live inline in hydromodpy/__init__.py is planned to migrate here in a later phase.

Functions

convert_units(df, var_key)	Apply unit conversions for precipitation, temperature, radiation.
filter_coordinates_by_shape(coordinates, ...)	Keep only coordinates that fall within the shapefile polygon.
get_centroid_coordinates(gdf)	Return (lon, lat) centroid of the first geometry in gdf.
reproject_coord(x_wgs, y_wgs)	Reproject WGS-84 coordinates to the local UTM zone.
reproject_shp(raw_shp_path, out_shp_path, ...)	Reproject a shapefile to utm_crs (e.g. 'EPSG:2154').
select_nearest_point(ds, lon, lat)	Select the nearest grid point in ds.
select_within_polygon_points(ds, gdf)	Mask ds to keep only points inside the gdf polygon.
transform_coordinates(dem_file_path, ...)	Convert all DEM pixel coordinates from from_crs to to_crs.