# Mapping a small reference dataset to a large dataset using scanpy ingest

**URL:** <https://discourse.scverse.org/t/mapping-a-small-reference-dataset-to-a-large-dataset-using-scanpy-ingest/710>\
**Category:** Help\
**Created:** [August 25, 2022, 2:09am UTC](https://discourse.scverse.org/t/mapping-a-small-reference-dataset-to-a-large-dataset-using-scanpy-ingest/710 "2022-08-25T02:09:05Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![w937447011](https://avatars.discourse-cdn.com/v4/letter/w/e79b87/32.png) [@w937447011](https://discourse.scverse.org/u/w937447011)\
**Post date:** [August 25, 2022, 2:09am UTC](https://discourse.scverse.org/t/mapping-a-small-reference-dataset-to-a-large-dataset-using-scanpy-ingest/710/1 "2022-08-25T02:09:05Z")

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Can I get good results with the scanpy ingest function when the referenced dataset (2638 × 1838) is relatively small and my own dataset is relatively large(18929 × 2664)? When I annotated my data with ingest and after, the dataset becomes similar to the reference dataset.