## raster.group_tiffs_by_crs()


Group GeoTIFF files by their coordinate reference system.


Usage

``` python
raster.group_tiffs_by_crs(src_tiffs)
```


## Parameters


`src_tiffs: Sequence[str | Path | UPath]`  
Sequence of paths to GeoTIFF files to group.


## Returns


`dict[str, list[UPath]]`  
Dictionary mapping CRS identifiers to lists of `UPath` instances. UTM zones use format 'UTM\[N\|S\]' (e.g., 'UTM32N', 'UTM01S'). Non-UTM projections use format 'EPSG' (e.g., 'EPSG4326').


## Raises


`ValueError`  
If src_tiffs is empty.

`TypeError`  
If CRS cannot be read from any file.

`FileNotFoundError`  
If any source file does not exist.