Chroma Reader

import logging
import sys

logging.basicConfig(stream=sys.stdout, level=logging.INFO)
logging.getLogger().addHandler(logging.StreamHandler(stream=sys.stdout))

from llama_index.readers.chroma import ChromaReader

# The chroma reader loads data from a persisted Chroma collection.
# This requires a collection name and a persist directory.

reader = ChromaReader(
    collection_name="chroma_collection",
    persist_directory="examples/data_connectors/chroma_collection"
)

# the query_vector is an embedding representation of your query.
# Example query vector:
#   query_vector=[0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3]

query_vector=[n1, n2, n3, ...]

# NOTE: Required args are collection_name, query_vector.
# See the Python client: https://github.com/qdrant/qdrant_client
# for more details. 
documents = reader.load_data(collection_name="demo", query_vector=query_vector, limit=5)

Create index

from llama_index.indices import GPTListIndex
index = GPTListIndex.from_documents(documents)

# set Logging to DEBUG for more detailed outputs
query_engine = index.as_query_engine()
response = query_engine.query("<query_text>")

display(Markdown(f"<b>{response}</b>"))