Edit bands into indexes of DEM class (#340)

tests/test_dem.py

@@ -7,6 +7,7 @@
 import numpy as np
 import pyproj
 import pytest
+import rasterio as rio
 from geoutils.georaster.raster import _default_rio_attrs
 
 import xdem
@@ -65,6 +66,15 @@ def test_init(self) -> None:
             )
         )
 
+        # Check that an error is raised when more than one band is provided
+        with pytest.raises(ValueError, match="DEM rasters should be composed of one band only"):
+            xdem.DEM.from_array(
+                data=np.zeros(shape=(2, 5, 5)),
+                transform=rio.transform.from_bounds(0, 0, 1, 1, 5, 5),
+                crs=None,
+                nodata=None,
+            )
+
     def test_copy(self) -> None:
         """
         Test that the copy method works as expected for DEM. In particular

xdem/coreg.py

@@ -1401,7 +1401,7 @@ def _fit_func(
 
         # Iteratively run the analysis until the maximum iterations or until the error gets low enough
         if verbose:
-            print("   Iteratively estimating horizontal shit:")
+            print("   Iteratively estimating horizontal shift:")
 
         # If verbose is True, will use progressbar and print additional statements
         pbar = trange(self.max_iterations, disable=not verbose, desc="   Progress")

xdem/dem.py

@@ -83,8 +83,8 @@ def __init__(
                 warnings.filterwarnings("ignore", message="Parse metadata from file not implemented")
                 super().__init__(filename_or_dataset, silent=silent, **kwargs)
 
-        # self.nbands can be None when data is not loaded through the Raster class
-        if self.nbands is not None and self.nbands > 1:
+        # self.indexes can be None when data is not loaded through the Raster class
+        if self.indexes is not None and len(self.indexes) > 1:
             raise ValueError("DEM rasters should be composed of one band only")
 
         # user input