slope

Contents

slope#

slope(ds: str | ~cloudpathlib.cloudpath.CloudPath | ~pathlib.Path | tuple[~numpy.ndarray | ~numpy.ma.MaskedArray, dict] | ~xarray.core.dataarray.DataArray | ~xarray.core.dataset.Dataset | ~rasterio.io.DatasetReader | ~rasterio.io.DatasetWriter, in_pct: bool = False, in_rad: bool = False) -> (<class 'numpy.ma.MaskedArray'>, <class 'dict'>)[source]#

Compute the slope of a DEM (in degrees).

Goal: replace gdaldem CLI

Warning

  • It uses a 2nd order gradient instead of Horn’s or Zevenbergen & Thorne’s formula

  • z_factor is fixed to 1.0

  • scale managed by ds resolution

Reference

Args:

ds (AnyRasterType): Path to the raster, its dataset, its xarray or a tuple containing its array and metadata in_pct (bool): Outputs slope in percents in_rad (bool): Outputs slope in radians. Not taken into account if in_pct == True

Returns:

(np.ma.masked_array, dict): Slope and its metadata

Contents