Better error when forgetting mosaic custom nodata (#144)

Inspired by microsoft/PlanetaryComputer#17 (reply in thread)
gjoseph92 · Apr 7, 2022 · 100d682 · 100d682
1 parent a1816bc
commit 100d682
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/stackstac/ops.py b/stackstac/ops.py
@@ -202,7 +202,9 @@ def mosaic(
     if np.isnan(nodata) and arr.dtype.kind in "biu":
         # Try to catch usage errors forgetting to set `nodata=`
         raise ValueError(
-            f"Cannot use {nodata=} when mosaicing a {arr.dtype} array, since {nodata} cannot exist in the array."
+            "You've probably forgotten to pass a custom `nodata=` argument. "
+            f"Cannot use {nodata=} (the default) when mosaicing a {arr.dtype} array, "
+            f"since {nodata} cannot exist in that dtype. "
         )
 
     func = (