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Yes, it seems that GPTChromaIndex has been renamed to GPTVectorStoreIndex with ChromaVectorStore. You can find an example of creating a Chroma Index in the
ChromaIndexDemo (
https://gpt-index.readthedocs.io/en/latest/examples/vector_stores/ChromaIndexDemo.html) documentation.
Here's a code snippet from the extracts on how to create a GPTVectorStoreIndex with ChromaVectorStore:
from llama_index import GPTVectorStoreIndex, SimpleDirectoryReader
from llama_index.vector_stores import ChromaVectorStore
from IPython.display import Markdown, display
# load documents
documents = SimpleDirectoryReader('../paul_graham_essay/data').load_data()
from llama_index.storage.storage_context import StorageContext
vector_store = ChromaVectorStore(chroma_collection=chroma_collection)
storage_context = StorageContext.from_defaults(vector_store=vector_store)
index = GPTVectorStoreIndex.from_documents(documents, storage_context=storage_context)This code demonstrates how to create a GPTVectorStoreIndex using the ChromaVectorStore for storing document vectors.
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