fix: ValueError returned when calling map_data on blobs and embeddings (

#373)

fix: ValueError returned when calling map_data on blobs and embeddings

nomic/atlas.py

@@ -63,6 +63,10 @@ def map_data(
         modality = "text"
 
     if blobs is not None:
+        if embeddings is not None:
+            raise ValueError(
+                "You cannot pass both `blobs` and `embeddings` to map_data(). To create a map of images, include `blobs` and not `embeddings`. To create a map of embeddings with images as metadata, include your images as a field in your `data` parameter."
+            )
         # change this when we support other modalities
         modality = "image"
         indexed_field = "_blob_hash"